I have accidentally upgraded my system from Ubuntu 14.04 to 16.04. Everything was working fine, but from recently I cannot mount /dev/sda6 partition (exFAT) anymore. After running:
sudo mount /dev/sda6 /media/zorz/Data/
I receive a following error:
mount: according to mtab, `/dev/sda6` is already mounted on /media/zorz/Data
If I try to do it by click, the more detailed error appears:
Error mounting /dev/sda6 at /media/zorz/Data: Command-line `mount -t "exfat" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,iocharset=utf8,namecase=0,errors=remount-ro,umask=0077""/dev/sda6""/media/zorz/Data"' exited with non-zero exit status 1:
stdout: `FUSE exfat 1.2.3
'
stderr: `mount: according to mtab, /dev/sda6 is already mounted on /media/zorz/Data
'Basically, any directory that I make under e.g. /media/zorz/test3, I get the similar error, but this time it ends with the test3:
mount: according to mtab, /dev/sda6 is already mounted on /media/zorz/test3
This partition is used for executing files and running scripts, and it was accessible by both Ubuntu and Windows 10, since I've been running dual boot for a few years so far. I'm not sure if this error is a result of an upgrade, but I remember that after the upgrade, the system was restarted without unmounting it previously. Usually if that happens, I would just receive a warning that sda6 was not unmounted cleanly.
I have already tried the prescriptions from other similar problems, but with no success. Are there any other suggestions of what I could check in order for this to work? As a final resort, I would do a clean install.
(Updated for the solutions proposed in comments)
Folder /media/zorz/Data/ is an empty folder. If I click on the partition in Nautilus, as suggested, again I obtain the same error.
exfat support was updated just before posting this, but still nothing improved, the error persists.
umount
zorz@zorz-LIFEBOOK-E554:~$ sudo umount /media/zorz/Data
umount: /media/zorz/Data: not mounted
zorz@zorz-LIFEBOOK-E554:~$ sudo umount /dev/sda6
umount: /dev/sda6: not mounted
In fstab and mtab, there are no references to sda6. The command mount -a gives no output. The output for mount,udisks --dump and lsblk contains the following:
fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda8 during installation
UUID=527ea26f-c915-47a9-af81-248d56f41b9d / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda2 during installation
UUID=4CF8-0068 /boot/efi vfat defaults 0 1
# swap was on /dev/sda9 during installation
UUID=4c6dc5ae-7633-4913-bfce-c0c4cb724c0c none swap sw 0 0
mtab
/dev/sda2 /boot/efi vfat rw 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0
systemd /sys/fs/cgroup/systemd cgroup rw,noexec,nosuid,nodev,none,name=systemd 0 0
mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=6082360k,nr_inodes=1520590,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=1219396k,mode=755)
/dev/sda8 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
none on /sys/fs/cgroup type tmpfs (rw,relatime,size=4k,mode=755)
none on /sys/fs/fuse/connections type fusectl (rw,relatime)
none on /sys/kernel/debug type debugfs (rw,relatime)
none on /sys/kernel/security type securityfs (rw,relatime)
none on /sys/firmware/efi/efivars type efivarfs (rw,relatime)
none on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
none on /run/shm type tmpfs (rw,nosuid,nodev,relatime)
none on /run/user type tmpfs (rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755)
none on /sys/fs/pstore type pstore (rw,relatime)
/dev/sda2 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,name=systemd)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
udisks --dump
========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda6
native-path: /sys/devices/pci0000:00/0000:00:1f.2/ata5/host4/target4:0:0/4:0:0:0/block/sda/sda6
device: 8:6
device-file: /dev/sda6
presentation: /dev/sda6
by-id: /dev/disk/by-id/ata-TOSHIBA_MQ01ABF050_85TKC1GHT-part6
by-id: /dev/disk/by-id/wwn-0x5000039673c8afb8-part6
by-id: /dev/disk/by-uuid/5A82-0E81
by-path: /dev/disk/by-path/pci-0000:00:1f.2-ata-5-part6
detected at: Fri 31 Jan 2020 01:14:53 AM CET
system internal: 1
removable: 0
has media: 1 (detected at Fri 31 Jan 2020 01:14:53 AM CET)
detects change: 0
detection by polling: 0
detection inhibitable: 0
detection inhibited: 0
is read only: 0
is mounted: 0
mount paths:
mounted by uid: 0
presentation hide: 0
presentation nopolicy: 0
presentation name:
presentation icon:
automount hint:
size: 107374182400
block size: 512
job underway: no
usage: filesystem
type: exfat
version: 1.0
uuid: 5A82-0E81
label: Data
partition:
part of: /org/freedesktop/UDisks/devices/sda
scheme: gpt
number: 6
type: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
flags:
offset: 149622358016
alignment offset: 0
size: 107374182400
label: Basic data partition
uuid: 0636A8B6-8189-400C-B410-4EA200FC4B70
========================================================================
lsblk
zorz@zorz-LIFEBOOK-E554:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 1G 0 part
├─sda2 8:2 0 1G 0 part /boot/efi
├─sda3 8:3 0 128M 0 part
├─sda4 8:4 0 57.2G 0 part
├─sda5 8:5 0 80G 0 part
├─sda6 8:6 0 100G 0 part
├─sda7 8:7 0 15G 0 part
├─sda8 8:8 0 205.5G 0 part /
└─sda9 8:9 0 5.9G 0 part [SWAP]
sr0 11:0 1 1024M 0 rom