I've recently install Elementary OS on my PC and i mistakenly installed a program named "mount management", apparently it changed my file-system permission or i guess it does (because i checked theme with live Linux and all of their owner set to root user) and on start-up it gave me permission denied error:

mountall: mount / []:permission denied

and bunch of other permission denied errors and it obviously hang.

My question is:

Is there any chown or chmod command which i can run on my linux live(recovery mod is read-only) to correct that partion permission (although i checked them all their owner is root) ?

  • I'm not entirely certain, but what is it you're saying doesn't have proper permissions? The filesystem device (/dev/sdX), the mount point (/mnt/foo), or the utils (/sbin/mount)? – Patrick Oct 23 '14 at 2:18
  • Just a wild guess... What about chmod 755 /...? – John WH Smith Oct 23 '14 at 15:31
  • The recovery mode may be initially read-only, to allow you to run filesystem checks if you find it necessary, but with mount -o remount,rw / or similar, you should be able to lift the read-only restriction when you need to change things. – telcoM May 31 '18 at 12:47

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