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I am trying to fix a broken Ubuntu upgrade, and so I am following the steps here:

https://help.ubuntu.com/community/LiveCdRecovery#Update_Failure

And when I get to step number 4 sudo mount --bind /dev /mnt/dev, I get the following error:

mount: mount point /mnt/dev does not exist

Running this:

sudo fdisk -l

Device     Boot  Start       End   Sectors  Size Id Type
/dev/sda1  *      2048    499711    497664  243M 83 Linux
/dev/sda2       501758 250068991 249567234  119G  5 Extended
/dev/sda5       501760 250068991 249567232  119G 8e Linux LVM

Then running this:

sudo fsck /dev/sda1

fsck from util-linux 2.26.2
e2fsck 1.42.12 (29-Aug-2014)
/dev/sda1: clean, 312/62248 files, 107999/248832 blocks

Why can I not mount this?

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4
  • You imply that step 3 was OK, so you have mounted /dev/sda1. The error is telling you that there is no /dev folder within this boot file system. You should enter ls /mnt/to see what is on that file system, if anything. You probably ought to dismount the boot disc again and do a file system check with sudo fsck /dev/sda1.
    – AFH
    Commented Oct 24, 2015 at 0:32
  • Am I mounting the right thing? When I cd to the directory, it contains: grub/, lost+found/ and other files but no other folders. It then looks like it mounts something else (with my users home directory and all the files I installed before the issue) with it, which has those folders...
    – Get Off My Lawn
    Commented Oct 24, 2015 at 0:39
  • /dev/sda1 looks to be the boot and /dev/sda2 is my file system. So is this correct? when I try to mount /dev/sda2 I get an error saying it isn't a valid NTFS
    – Get Off My Lawn
    Commented Oct 24, 2015 at 0:44
  • I don't have a /grub/ directory in any of my dual-boot file systems: my only grub/ directory is in /boot/. Your fdisk listing shows that /dev/sda2 is an extended partition, which cannot be mounted: it is there to hold other partitions, so your live system is in /dev/sda5. You will get a clearer view of your partition structure by running disks or gparted.
    – AFH
    Commented Oct 24, 2015 at 11:55

1 Answer 1

Reset to default
2

I was able to get it.

sudo lvdisplay

--- Logical volume ---
LV Path                /dev/ubuntu-vg/root

I then was able to do this:

sudo mount /dev/ubuntu-vg/root /mnt

I was then able to finish the rest of the steps.

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