[SOLVED] chroot: failed to run command `/bin/bash': No such file or directory

[ternor]

Hello.  I mounted a live cd as follows:

Code: [Select]

# mount /dev/sr0 /mnt/loop -t iso9660 -o loop
I then tried to chroot to the live cd using various syntaxes which all returned the error message shown in the title:

Code: [Select]

# chroot loop
chroot: failed to run command `/bin/bash': No such file or directory
# chroot ./loop
chroot: failed to run command `/bin/bash': No such file or directory
# which bash
/bin/bash
# chroot /mnt/loop
chroot: failed to run command `/bin/bash': No such file or directory
I would appreciate any advice.  A simple mount command results in the live cd being mounted 'read-only'.

[Old-Polack]

Hello.  I mounted a live cd as follows:

Code: [Select]

# mount /dev/sr0 /mnt/loop -t iso9660 -o loop
I then tried to chroot to the live cd using various syntaxes which all returned the error message shown in the title:

Code: [Select]

# chroot loop
chroot: failed to run command `/bin/bash': No such file or directory
# chroot ./loop
chroot: failed to run command `/bin/bash': No such file or directory
# which bash
/bin/bash
# chroot /mnt/loop
chroot: failed to run command `/bin/bash': No such file or directory
I would appreciate any advice.  A simple mount command results in the live cd being mounted 'read-only'.

You loop mount an ISO image, not a CD, and a burned liveCD is always mounted "read only". When is the last time you were able to write to a CD?  

[dougmack]

This may be stating the obvious, but a live CD can not be written to, so I'm hardly surprised to see it mount read-only. Am I missing something?

--doug

[ternor]

Yes, of course.  Using the simple mount command I can still not chroot to the live cd.  I want to run some commands in that environment.  Is it possible?

Code: [Select]

# umount /dev/sr0
# mount /dev/sr0 /mnt/loop
mount: block device /dev/sr0 is write-protected, mounting read-only
# chroot /mnt/loop
chroot: failed to run command `/bin/bash': No such file or directory

[JALU]

Yes, of course.  Using the simple mount command I can still not chroot to the live cd.  I want to run some commands in that environment.  Is it possible?

Umm... ternor,  you might try booting from the live CD ?
Cages

[TerryN]

You can't chroot to a liveCD in the way you are trying to do.
It does not contain a "root filesystem" that is immediately available (which is why bash cannot be found).  It is contained in a livecd.sqfs file which is unpacked into RAM at boot time to provide a root filesystem.

Terry.  

[ternor]

Thanks TerryN.  I may try unpacking that file.  The reason I want to run it from my OS, darkages, is that I need recourse to applications available on the OS and not on the cd.

[JALU]

What I meant was boot from the Live CD and chroot to your HDD partition when required...
Cages.

[TerryN]

Thanks TerryN.  I may try unpacking that file.  The reason I want to run it from my OS, darkages, is that I need recourse to applications available on the OS and not on the cd.

Then surely you should be booting from the LiveCD and chroot'ing to the installed environment 

EDIT:  as darkages has said

Terry

[ternor]

Thanks for the replies.  I'll try that.