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mount: mounting /sys on /root/sys failed: No such file or directory
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /sys on /root/sys failed: No such file or directory
mount: mounting /proc on /root/proc failed: No such file or directory
Target file system doesn't have /sbin/init
No init found. Try passing init= bootarg

Busybox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) built-in shell (ash)
Enter 'help' for a list of built-in commands
(initramfs) _

I tried passing init=bootarg in linux by editing the boot option in grub but it doesn't help.. I tried to boot the live cd trying to get my files but as I mount the volume it goes forever...how should I fix this?

edit: I tried using fsck but it says,

filesystem mounted or opened exclusively by other program?
fsck: Device or resource busy while trying to open /dev/sda1

Are there any low level system utilities for linux that can be booted (a little similar to msdos' command.com ) so that I will use fsck under it to make sure that the device is not busy or in use?

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3 Answers 3

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Boot into the LiveCD again, launch GParted, and check the partition (click on the partition and choose Partition → Check). If you see any errors, save them and copy them here.

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  • it says: Device or resource is busy.. I tried using fsck..but same result..
    – prinzrainer
    Mar 27, 2011 at 5:45
  • Is the partition really unmounted (see output of mount)? Are you using a LiveCD or LiveUSB? Which version of Ubuntu? BTW I think busybox (see your original post and the prompt) supports basic commands like mount, umount and fsck.
    – arrange
    Mar 27, 2011 at 15:14
  • filesystem is not mounted...I'm using a LiveCD (ubuntu 10.10)... I tried mounting it w/ busybox..but still same as I do it on ubuntu terminal...Mount executes but never returns... Fortunately I can still use debugfs to backup my important files but I still want my old system back...
    – prinzrainer
    Mar 28, 2011 at 7:06
  • I just don't understand why I can't be mounted while debugfs can still open it..Also,, isn't the '/' (root dir) used when the booting stopped, is still the root of the disk image loaded by initrd?? So /sbin/init is still from the disk image. Could it be that the disk image is damaged?
    – prinzrainer
    Mar 28, 2011 at 7:18
  • Have you tried fscking the partition from the busybox prompt?
    – arrange
    Mar 28, 2011 at 8:22
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You need check the filesystem on the Hard Disk Drive.

  1. Run LiveCD, open terminal

  2. In terminal, type

    sudo fdisk -l

    This command display your partitions

  3. Then

    sudo fsck.ext4 -f /dev/partition_on_disk

    for example

    sudo fsck.ext4 -f /dev/sda2

  4. On every fix? answer y.

  5. Reboot system

Source here

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I was a victim of "Target filesystem doesn't have /sbin/init". I tried using fsck, but it didn't work because of the following problem. 

fsck: Device or resource busy while trying to open /dev/sda1 Filesystem mounted or opened exclusively by another program?

So here is the solution:

Boot from Live Ubuntu CD.

->remove the first inode.

sudo debugfs -w /dev/sda1
debugfs 1.41.11 (14-Mar-2010)
debugfs: clri <8>
debugfs: quit

->Restart into live cd again. and do

sudo fsck -yv /dev/sda1

It will work this time. 

Cheers

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