Ask Ubuntu Asked by venus on August 13, 2020
I am using Ubuntu 12.04.2 on a live usb,
After I restarted my system with bootable usb, when I try to open my harddisk, it shows–
Unable to mount New Volume
Error mounting: mount exited with exit code 21: mount: according to mtab, /dev/sda3 is already mounted on /media/New Volume.
And
Unable to mount 202 GB Filesystem
Error mounting: mount exited with exit code 21: mount: according to mtab, /dev/sda2 is already mounted on /media/AECE2545CE250765
and i am not even able to access my pendrives, I have some really important programs stored in live USB and i want to copy and paste it in the harddisk.
Please help…Thanks in advance
If you use both windows 8 and Ubuntu and you cant access win8 partitions from Ubuntu, just boot into win8, open Command prompt and type this:
powercfg -h off
And the problem will be solved.
Answered by Razvan on August 13, 2020
The problem is likely that your USB-drive is now detected as the /dev/sda device, as it is the first device found during the boot-up.
Try running sudo lshw -c disk in a terminal. There you will find that your harddisk is probably /dev/sdb at this point. Then run sudo fdisk -l /dev/sdb and see if you recognize the partition sizes and layout. If that is the disk, then you should be able to mount it the way you already did, but change the sda to sdb in this case.
Answered by holmb on August 13, 2020
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