Umount Not Mounted

Consider a mount point /mnt, which is also mounted on /tmp. 3 study guide by momscookies includes 15 questions covering vocabulary, terms and more. Processing on the file system, directory, or file completes and it is unmounted. you should not lose any data by running fsck -- unless you run it on mounted file system. Thin Client project want to create a very low price thin client over Raspberry Pi board! Microsoft RDC, Citrix ICA, VMWare View, OpenNX & SPICE. Veritas does not guarantee the accuracy regarding the completeness of. Note that this command does not actually unmount the file systems. The commands listed below will not work for normal users unless users have permission to mount that device. How to Mount an SD Card on Your Android Phone. It seems they are just trying to save users a few keystrokes by using umount, rather than unmount. img -m device [--ro] mountpoint guestmount [--options] -a disk. Wayback provides the ability to remount any already mounted file system with versioning support under a different directory. Also, we should exit the mount folder in Explorer before we unmount our image. To start Client for NFS from the Windows interface After installation this service should start by default, if not. The root filesystem is magically mounted at boot time, and one can rely on it to always be mounted. Once invoked, it displays a list of every mounted file system. The mount and umount commands use a lock file to guarantee exclusive access to /etc/mnttab. independently on UID. Permanent Solution: Disable Fast Startup in Windows 8 and Windows 10. Once the module has been loaded, you can perform a "ls" (listing) of the operations supported by this module which is mount and umount. target unless nofail mount option is set. is there a way to mount and dismount a connected harddrive through a script or a simple utility software in Windows 8. Note that here we need to use a third drive (flash drive in this case, mounted at /media/PNY_usb) on which to store the logfile (rescue. In this case, you need to use forceful (-f switch) and lazy umount (-l switch) to un-mount this dead NFS mount point. (In some cases useful info about processes that use. With these two commands, not only can you discover details about the free space on the mounted. Start studying Unit 07- Disk and File System Management. I solved it by issuing mount and checking for the / mount, or mount | grep " / "(note the existing ` ` spaces). sudo mount -a. As a security precaution, /tmp and /var/tmp are mounted with noexec, nsuid and nodev to prevent the many simple exploits uploaded via vulnerable PHP applications from being able to execute commands in /tmp and/or /var/tmp. While many users enable other file systems such as reiserFS, red hat may not support them. Why does OS X require admin privileges to unmount a drive from the terminal using `umount` but not when using Finder? Cannot see ntfs-3g mounted drive files in. Mount units referring to local file systems automatically gain an After= dependency on local-fs-pre. Mount Disk on System Boot. FreeBSD uses the umass (4) driver which uses the SCSI subsystem to access USB storage devices. Standard attempts to umount fails with the EBUSY message: umount: /mnt/nfs: device is busy when using any of the following commands: # mount -t nfs -o remount /mnt/nfs # umount /mnt/nfs # umount -f /mnt/nfs # umount -l /mnt/nfs # umount -lf /mnt/nfs. logfile in this case). Mounted images are WIM, VHD, or FFU files that have their contents mapped to a folder. Mounting and Unmounting File Systems. umount -l /PATH/OF/BUSY-DEVICE umount -f /PATH/OF/BUSY-NFS(NETWORK-FILE-SYSTEM) NOTE: These commands can disrupt a running process, cause data loss OR corrupt open files. 6 - auto-mount script mount (2) - mount and unmount filesystems. Also, how to edit the /etc/fstab file to automatically mount file systems at system startup will be shown. But all of this is not the point, the point is, that a umount (forced or not forced) should either cleanly umount the filesystem or fail, but not leave it in an errno 108 state. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. I have to use the hardware troubleshooter every time I plug it into the computer. present only specifies that the device is to be configured in fstab and does not trigger or require a mount. If "Mount SD card" is not an available option, tap on "Unmount SD card," wait for the card to unmount, then tap on "Mount SD card" to verify that the card is properly mounted. If you have mounted several partitions, by default all of them will be selected for unmounting. Checked > > again using lsof. Do the same on all nodes. mis-aligned partitions can cause performance issues, but I wouldn't think they'd have anything to do with stopping shutdown. This would cause umount to be unable to unmount the filesystem. As yet another superintendent-designed solution to what was a nagging problem with no commercially. It is useful to identify which processes currently prevent the file system from successful umounting. 106 and remove them. umount command help information can be listed with --help like below. Third, fixed your Macintosh HD not mounted by the terminal. RPi Adding USB Drives. This article is useful for those users and system administrators who want to mount remote file system on their local systems for whatever purposes. If you do need a full fsck, umount the filesystem first. sudo mount -a. So I found this page and tried everything. And it looks a bit similar to fstab but not the 100% same ( notice rw and ro for read/write and read only ) And it does only lists the mounted devices !. on Apr 20, 2016 at 11:27 UTC. All mount units acquire automatic Before= and Conflicts= on umount. If there are open references on any local file system, the umount fails with -EBUSY, regardless of whether or not "umount -f" was used. I'm on a TS-453A, if that helps at all. While disk images are not physical disks, they must also be mounted in order for the computer to recognize them. The directory can be named almost anything you want. Using this menu item seemed to work on another Virtual Machine. Remember, only root can mount/unmount (umount) devices. :unmount Alias for :umount action. sudo umount -l /isodevice是卸载 not mounted 是未安装过 在win7下安装Linux 以Fedora版的Linux为例,最新版的可以到官网下载,废话不多说,直接开整: 1. Computers Troubleshooting external hard drives that will not mount. The mount will be removed from the filesystem namespace (so you won't see it under /mnt/nfs/linoxide anymore) but it stays mounted, so programs accessing it can continue to do so. We are working in partnership with the Association of Manufacturers of Domestic Appliances (AMDEA), supporting the ‘Register my appliance’ initiative. The other commands which read /etc/mnttab do not check the lock file; they may return incorrect values if they are used while a filesystem is being mounted or unmounted. Most disks are automatically mounted by the operating system when they are connected. You'll need to know the name of the mount point - that is, the name in /Volumes that corresponds to that network drive. You must supply at least one of the following options or arguments. A munt point is a directry attached to the Root. * The original report only concerned itself with a non-root user attempting to umount a user-mountable FS which is not in fact mounted. Before you can access the files on a file system, you need to mount the file system. While many users enable other file systems such as reiserFS, red hat may not support them. The umount command detaches the file system(s) mentioned from the file hierarchy. just issue "sudo mount" in the command line and it will show all mounted mediums. Thus you can not get your wandering home directory mounted inside /home/ with HAL! The user can dismount the partition at any moment — this is even a recommendation. This can be helpful if network connectivity is unavailable and you need to copy files to or from the device. you should not lose any data by running fsck -- unless you run it on mounted file system. The mounted drive does not automatically refresh files changed out side of DOSBox. I hope this article will help to mount and unmount the. on Apr 20, 2016 at 11:27 UTC. I now have a useable disk where before it would not mount and could not be formatted or. The mount program does not read the /etc/fstab file if device (or LABEL/UUID) and dir are specified. Using this menu item seemed to work on another Virtual Machine. [email protected]:~$ sudo mount -t vfat /dev/sda3 /media/ubuntu -o uid=1000,gid=1000,utf8,dmask=027,fmask=137. The drives should be automatically mounted after the Raspberry Pi has finished rebooting. Unmount a device in UNIX, do nothing in Windows. 0 (Raid 5 SCSI) is crashed periodically (it doesn't react to the mouse or keyboard and can't be accessible throw network) /var/log/boot. # umount /mnt When the device is not used anywhere else, then the above umount will unmount the device without any issue. :mount Default. org You can create a new directory under /mnt for each partition to be mounted, You can learn more about mount and umount. :unmount Alias for :umount action. If your particular distribution is setup not to allow users to mount partitions its not very hard to change this, simply edit the /etc/fstab file (as root) and:. I already have code to recognize shared drives (from a SQL table) and mount them in a special directory where all users can access them. On such systems, recursively bind mounting the root directory of the filesystem onto a subdirectory and then later unmounting that subdirectory with MNT_DE- TACH will cause every mount in the mount namespace to be lazily un- mounted. Note that the USB stick should be at least 1 GB in size (smaller setups are possible if you follow Section 4. Attaches a virtual hard disk to the system where the path to the virtual hard disk file is c:\test\testvhdx. For many users, the easiest way to unmount a drive in Mac is to either just drag a volume into the Trash, use the eject keys, disconnect the drive, or use one of the force eject methods. Ask Question Asked 6 years, 10 it seems /dev/mmcblk0p2 is mounted multiple times Do I have to umount, what are the. I want to know, if I remove a drive from my SQL table (effectively taking it offline) how, or even is, there a way to unmount a busy device? So far I've found that any form of umount does not work. If not already, upgrade to OCFS2 1. ) I suspect (from reading the umount man page) that the libraries that umount uses are on /dev/hda1. $ sudo umount /mnt/old_hdd $ sudo mdadm -S /dev/md9 mdadm: stopped /dev/md9. After research on one of the computers I've noticed that. Here's a screenshot showing the results to the mount and umount commands. /etc/mtab This file handles the mounted devices and is automatically updated by the mount command. RHEL DVD) from the command line in Linux. The following example displays the results of running umount –a -V: # umount -a -V umount /home/kathys umount /opt umount /home umount /net. ( the directories will stay after a reboot, the mounting however has to be done again ) Do not mount partitions if you do not need them mounted. While many users enable other file systems such as reiserFS, red hat may not support them. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Mounting and Unmounting File Systems. As yet another superintendent-designed solution to what was a nagging problem with no commercially. Bugs/errors caused by ebuilds from overlays. If the root filesystem can't be mounted, the system does not boot. And also: $ sudo umount /media/USB. If the sudo command is not available in your environment, switch to root with the su command, and then issue the command umount -a -t cifs -l; This has resolved my issue. The procedure on how to mount USB drive on Kali Linux is no different from any other Linux distribution. -f Forces deletion of Network File System (NFS) network drives. nfs /mnt device is busy, umount2: device or resource busy. An Amazon EFS mount appears unresponsive. In Windows, mounting and unmounting a volume is accomplished by changing the volume's drive letter assignment. umount -R /mnt/aufofs will unmount everything mounted below that folder? EDIT: I find the man page for umount unclear on this issue. img -m device [--ro] mountpoint guestmount [--options] -a disk. One is a. If you get this message from your QNAP: The file system is not clean. Phone won't mount SD card. When I'm in adb I get $ adb shell # umount /sdcard umount: can't umount /mnt/sdcard: Device or resource busy. 3 study guide by momscookies includes 15 questions covering vocabulary, terms and more. umount will delete the mount point (folder) that the drive was mounted to. Be warned that -f is not generally a good idea as it might crash the computer or damage data on the file system. (This should not be confused with the -V option, which merely returns information about the currently installed version of umount. You cannot mount a folder or a file. RAW Paste Data We use cookies for various purposes including. For virtual machines in a vSphere environment, you can alternatively use VMware Tools operating system specific packages (OSPs) and open-vm-tools to. Use one of the following commands to find shares that are mounted from a CIFS server: Use the mount command. independently on UID. If the virtual disk has mixed partitions, for example, one partition is formatted with a Linux operating system and another partition is formatted with a Windows operating system, you can map the Windows partition only. In the above example it will not apply if /dev/sdb1 has no noexec option specified in /etc/fstab. For more information about the mount and umount commands you can view their man page (help files. Filed Under: Troubleshooting Errors Tagged With: force umount nfs redhat, how to unmount dead nfs forcefully, how to unmount nfs share in linux, how to unmount NFS when server is gone, umount nfs not mounted, umount. What I do is the following: I run dd if=/dev/sda of=/dev/sdb then mount /dev/sdb1 (note that /dev/sdb1 is not mounted on boot) to make linux mount dd ext3 umount asked Nov 5 '15 at 12:58. Method 1: Mount and Unmount VHD/VHDX from Command Prompt This method allows you. -a Deletes all NFS network drives. If NFS share currently mounted on client, then un-mount it forcefully and try to remount it on NFS client. A file system is specified by giving the directory where it has been mounted. umount() and umount2() can be invoked only by the user with the appropriate privilege. Note: if you get a message like "/mnt: device is busy", to check that you are not in the mounted directory and no process is using it, type: # fuser /mnt CIFS network file system. g devices mounted by HAL). umount the file system by specifying the directory path where it has been mounted. I have pushed a zip to my device and now want to safely detach my usb cable. mount Removing the NFS Mount. You can now release the REC button. An ISO or IMG file, also called a disc image, is a single file that's a copy of an entire data CD or DVD. Multiple devices and nodes may be specified on the command line. If no arguments are given to mount, this list is printed. How to Mount an ISO Image. If you know vg and lv minor number create a new directory there you create vg group file, lv raw and block device files and try to unmount using new lv file it may work ,not sure. Index: scripts/Configure ===== --- scripts/Configure (revision 0) +++ scripts/Configure (revision 3561) @@ -0,0 +1,705 @@ +#! /bin/sh +# +# This script is used to configure BusyBox. How to Un-mount an Android SD Card Before Removing it. *EDIT* This also happens if I manually mount the drive, using:. The following discussion allows you to unmout device and partition forcefully using mount or fuser Linux commands. Beginning at some point recently, it no longer appears in My Computer. On such systems, recursively bind mounting the root directory of the filesystem onto a subdirectory and then later unmounting that subdirectory with MNT_DE- TACH will cause every mount in the mount namespace to be lazily un- mounted. The commands listed below will not work for normal users unless users have permission to mount that device. 23-1pve3 Posted by fdef on Wed, 02 Dec 2009 17:46:49 GMT View Forum Message <> Reply to Message hi all , I have a issue when i call vzctl with vps. The programs mount and umount maintain a list of currently mounted filesystems in the file /etc/mtab. You can mount and unmount drives, volumes, and disks from the command line of MacOS and Mac OS X. 2 platform which failed with below errors. Note that the USB stick should be at least 1 GB in size (smaller setups are possible if you follow Section 4. Unmounting is done through the "umount" command, which can be given a device or a mount point so: sudo umount /mnt sudo umount /dev/hda1. pl -h yourwebserver # Securely edit the sudo file over the network visudo # Securely look at the group file over the network vigr # Securely seeing. ORA-27054: NFS file system where the file is created or resides is not mounted with correct options This issue happened when I was trying to backup the archive log file on an Oracle RAC database Solutions The cause of the issue is because the NFS volume hasn't been mounted correctly. Simply run the following command from the terminal either "root" or "sudo" to unmount an mounted ISO image. smit umount. Moderator Global Moderators: 9206: 151135. If you want to make sure the drives are restored after the Pi has been shut down then simply run the following command: sudo reboot. , "/dev/sda2") at the beginning of every line in the "mount" output. The mount and umount commands require root user privilege to effect changes. auto/noauto - The filesystem will be mounted automatically at startup/The filesystem will NOT be automatically mounted at startup. The filesystem is huge, so lsof +D /path is not a realistic option. The mount will be removed from the filesystem namespace (so you won't see it under /mnt/nfs/linoxide anymore) but it stays mounted, so programs accessing it can continue to do so. OPTIONS¶ The following options are understood: --no-block. The filesystem is identified by the full pathname of the directory in which it has been mounted, not by its type. group,jqfmt=vfsv1 0 0 The 2nd entry “/dev/zd0” can be mounted by issuing “mount -a” manually. /etc/mtab This file handles the mounted devices and is automatically updated by the mount command. Last, but certainly not least, if you're comfortable with mucking around in the registry you could do a search for all occurrences of 192. The another improvement is the option --all-targets. Giving the special device on which the file system lives may also work, but is obsolete, mainly because it will fail in case this device was mounted on more than one directory. For an Exchange 2016 server that is not a member of a database availability group the failed content index can be rebuilt using the following procedure. 2) mount/unmount Filesystems: mount is the command used to mount filesystems mount [|] mount -a mount all To unmount filesystem use "umount" umount Note: You can't write into or read any content from filesystem when its in unmounted state -f unmount filesystem forcibly umount -f for v7. umount: mnt/trdx-rootfs: not mounted. As this is a semi. If your Pi is running when you wish to remove the drive, use the umount command: umount /media/usb. Try to execute these commands when NOT inside mounted Folder/Drive. Mounting the NFS share on a Windows server. I'm putting a umount /mnt/temp at the start so that it'll umount it before doing anything. "Some packages could not be installed. Then use o2cb configure to set the new values. If your particular distribution is setup not to allow users to mount partitions its not very hard to change this, simply edit the /etc/fstab file (as root) and:. I want to use the cd-rom but I can't see what's inside in the cd. dev/nodev - Interpret/Do not interpret character or block special devices on the file system. Mount a device. Verify the drive you want to mount is not yet mounted by entering this command into the shell: mount Press "Enter. To access an ISO disc image, you have to create a mount point (empty folder that will be used as a root filesystem) and mount an ISO file to it. 01/07/2019; 5 minutes to read +3; In this article. It is the simplest way to mount or unmount a VHD or VHDX file. fuse-t fuse. LabSim Exam Questions LabSim Linux+ 7. I want to know, if I remove a drive from my SQL table (effectively taking it offline) how, or even is, there a way to unmount a busy device? So far I've found that any form of umount does not work. You can reattach a volume that you detached (without unmounting it), but it might not get the same mount point. I'm putting a umount /mnt/temp at the start so that it'll umount it before doing anything. Unable to unmount mounted device, not found in mtab. If you want to make sure it is really mounted, and not just a random directory. By specifying the mount options, you override this default choice. A munt point is a directry attached to the Root. g devices mounted by HAL). You COULD try the umount command (notice there's no "n" between the "u" and the "m"). Later I again attached the USB pen drive in Ubuntu system but found that the USB pen drive showing read only filesystem message. 3, “Manually copying files to the USB stick — the flexible way”). Supported by the generic umount command. ~> sudo umount /mnt/c m. Note that this command does not actually unmount the file systems. A file system is specified by giving the directory where it has been mounted. user specifies that a non-root user is permitted to mount and unmount the filesystem. If a filesystem fails to unmount, the best course of action is to use fuser to determine the processes using the filesystem and to safely end them. If I hit the [ Force Unmount ] button the dialog box goes away. So become root, and mount the device: sudo mount -t vfat /dev/sdd1 /mnt. We can specify file system type with -t parameter like below. I have a solaris 10 system. Any wrong for the following test steps? thanks. I want to unmount or eject it but I dont know how to find the device name to supply to the unmount or eject command. So many people seem to be experiencing the same problem. what i could from the mounted folder (not sure i needed to). You use the mount command to confirm what is mounted, not the ls command. auto/noauto - The filesystem will be mounted automatically at startup/The filesystem will NOT be automatically mounted at startup. Members of the system group and users operating with root user authority can issue any umount command. The following example unmounts a file system that is mounted on /usr/man: # umount /usr/man Example 5-2 Using Options with umount. But some time this can not worked. This behavior is unexpected, unnecessary, and frankly dangerous. sudo mount -a. Would both unmount the filesystem on /dev/hda1 if it is mounted on /mnt. I'm not quite sure how to go about remounting it. The other commands which read /etc/mnttab do not check the lock file; they may return incorrect values if they are used while a filesystem is being mounted or unmounted. In a moment of "what the heck, try this," while in Disk Recovery mode, I ran Fix Disk Permissions, then, voila! I was able to force an unmount and could wipe the disk. Unless the storage device is mounted to the tree structure, the user can't open any of the files on the computer. shutdown does not try to unmount _netdev filesystems - which sounds good as explainedd in Description. So it could be mounted without hassle: $ sudo mount /dev/md9 /mnt/old_hdd/ $ mount | grep ^/dev/md9 /dev/md9 on /mnt/old_hdd type ext4 (rw) After data was moved I unmounted file system and removed md virtual device. Hi, My problem: After upgrading the vmware tools on Redhat Linux Guests the vmware tools remain in the vm properties. Since he met Ugnius Kiguolis in 2003, they both launched several projects that spread awareness about cybercrimes, malware, and other computer-related problems. Do the same on all nodes. The propagation settings control whether a mount on /tmp/a would also be available on /mnt/a. Mount Disk on System Boot. This site uses cookies. The commands listed below will not work for normal users unless users have permission to mount that device. 今天在使用mount和unmount的时候经常会出现not mount. At this time umount. fstab does not umount after removing jail. In previous example we have looked lazy unmount which will wait the operation to end in order to unmount the mount point. Of course, stopping Debian VM #2 from VI client and starting it again, makes the files visible, but both workarounds are not a solution for this problem. The command: umount -f -a will force an unmount of all NFS mounted shares. If there were writes to the volume in progress when it was detached, the data on the volume might be out of sync. If one exists, it is executed; otherwise, the generic module unmounts the filesystem. Along the same. This procedure describes how to use the VMware Tools tar installer to install or upgrade VMware Tools. When the connection to a remote resource, mounted using sshfs, is broken you can not access the directory using command like ls. As normal user with fstab. OPTIONS¶ The following options are understood: --no-block. umount is the opposite of mount. The following example displays the results of running umount –a -V: # umount -a -V umount /home/kathys umount /opt umount /home umount /net. Based on the execute with timeout command in this site. The programs mount and umount maintain a list of currently mounted filesystems in the file /etc/mtab. Unable to Mount external hard drive on mac [solved] The Mac Helper you will be able to mount your external hard drive and can. When I'm in adb I get $ adb shell # umount /sdcard umount: can't umount /mnt/sdcard: Device or resource busy. I mean that the vm device: CD-Rom Drive is configured for the Datastore-ISO File [] /vmimages/tools-isoimages/linux. I want to know, if I remove a drive from my SQL table (effectively taking it offline) how, or even is, there a way to unmount a busy device? So far I've found that any form of umount does not work. Conclusion. Introduction to mounting filesystems in Linux ; Introduction to mounting filesystems in Linux. " Search for the Linux name of the drive (e. how umount for reiserfsck - Linux / Unix Administration. In this example we. This method works great if you're looking to unmount a drive that is mounted to a folder. If we run the unmount command without the /commitparameter, the changes we made will not be saved. To mount an ISO file means to access its contents as if it was recorded on a physical medium and then inserted in the optical drive. A USB device is normally auto-mounted in macOS, and you have to unmount (not eject) it before block-writing to it with dd. That "umount" command will require root privileges, so you'll have to arrange that. But all of this is not the point, the point is, that a umount (forced or not forced) should either cleanly umount the filesystem or fail, but not leave it in an errno 108 state. This tutorial will show you how to natively mount or unmount ISO and IMG image files in Windows 10. Follow the below mentioned simple steps to Mount and Unmount (Eject): Step 1: To mount VHD/VHDX file, right-click on the VHD/VHDX file and select Mount. If you want to take one of your drives offline, you can unmount it. # umount /mydata -l 14. umount notifies the system that special, a VxFS block special device, is no longer available to users from mount_point. OPTIONS¶ The following options are understood: --no-block. mount /dev/sda1 /mnt/usb The mount command should automatically detect the partition type and mount the drive. Note that the items mentioned in `root' which derived from attempting the mount will NOT work correctly. Note that this command does not actually unmount the file systems. How to unmount a USB drive which is not mounted under /media directory. You use the mount command to confirm what is mounted, not the ls command. And it looks a bit similar to fstab but not the 100% same ( notice rw and ro for read/write and read only ) And it does only lists the mounted devices !. You can force the device to be unmounted by specifying the -f option. org, a friendly and active Linux Community. If no arguments are given to mount, this list is printed. You can use lsof, too. The only way to unmount thedisabled file system is to reboot the system. umount -O noexec /dev/sdb1 Options passed to the umount command only mean that the command will apply to file systems which have the specified option within the /etc/fstab configuration file. Jake Doe - Computer technology geek. It means that the target namespace does not have to contain any libraries or another requirements necessary to execute umount(2) command. Is it possible to do a umount --dont-fail-if-not-mounted /mnt/temp? So that it will return 0 if the device isn't. Learn vocabulary, terms, and more with flashcards, games, and other study tools. In this tutorial, we will go over the basics of attaching and detaching various file systems using the mount and umount commands. In this tutorial, we will explain how to manually mount and unmount a USB drive to and from your system. ORA-27054: NFS file system where the file is created or resides is not mounted with correct options This issue happened when I was trying to backup the archive log file on an Oracle RAC database Solutions The cause of the issue is because the NFS volume hasn't been mounted correctly. Since he met Ugnius Kiguolis in 2003, they both launched several projects that spread awareness about cybercrimes, malware, and other computer-related problems. Mount and unmount events under this mount point do not propagate to any peer. This can be helpful if network connectivity is unavailable and you need to copy files to or from the device. So we need to close opened files those resides in file system we want to unmount. On the other hand, I've never used cfdisk - maybe it doesn't do that stuff automatically. 6 thoughts on " Mounting and UnMounting USB Drives on Raspberry Pi " It's umount not unmount !. The programs mount and umount maintain a list of currently mounted file systems in the file /etc/mtab. I'm pretty sure this is a regression as I seem to recall using this before (and my fish shell history confirms) but I don't recall having a problem. A hard disk image contains an MBR, then a number of partitions, but the 'mount' instruction in Linux works with disk partitions, not full disks. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. So become root, and mount the device: sudo mount -t vfat /dev/sdd1 /mnt. mis-aligned partitions can cause performance issues, but I wouldn't think they'd have anything to do with stopping shutdown. I t also performs c rkhunter --check # Check the backdoors and security. If the partition you want to format as xfs already exists on the system you must make sure it's not mounted by using the command umount command like this: # umount /dev/sdb1 /dev/sdb1 should of course be replaced by the name of the partition you want to use. To unmount a volume, you need to know its mount point, which you can find with df. This means, if there is a process, say a bash shell, running with CWD in a local file system's mount point, running "umount -f" on that mount point will fail the same as running "umount" without the "-f" flag. If this is not given, then the mount options are either the empty string or ro (the latter if the --ro flag is used). You may now notice that the scroll wheel blinks once and then the logo appears. Not that you will have to unmount /dev/pts and /dev/shm before you can unmount /dev. type helpers. If there were writes to the volume in progress when it was detached, the data on the volume might be out of sync. For example: mount /dev/foo /dir.