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[solved]UML: mount: cannot remount block device /dev/ubda
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toralf
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Joined: 01 Feb 2004
Posts: 3922
Location: Hamburg

PostPosted: Thu Oct 25, 2012 8:08 pm    Post subject: [solved]UML: mount: cannot remount block device /dev/ubda Reply with quote

I cloned a 1.2 GB user mode linux file w/ ext3 fs (Gentoo Linux) into a 2.0 GB bigger file with ext4. Trying to boot the image however I always get :
Code:

...
 [ ok ]
 * Checking local filesystems  ...
stable: clean, 81157/122160 files, 265527/488281 blocks
 [ ok ]
 * Remounting root filesystem read/write ...
mount: cannot remount block device /dev/ubda read-write, is write-protected
 * Root filesystem could not be mounted read/write
 

probably PEBKAC - but what d I miss ????


Last edited by toralf on Fri Oct 26, 2012 2:41 pm; edited 1 time in total
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54216
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PostPosted: Thu Oct 25, 2012 8:11 pm    Post subject: Reply with quote

toralf,

Two thinks come to mind.

DEVTMPFS in your kernel (and the mount option that appears when you select it).

Or adding udev-mount to the sysinit runlevel.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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toralf
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Joined: 01 Feb 2004
Posts: 3922
Location: Hamburg

PostPosted: Thu Oct 25, 2012 8:28 pm    Post subject: Reply with quote

both aren't the culprit :-(
(and the fstab entry I've already adapted)
[Update], but this was it : http://sourceforge.net/mailarchive/forum.php?thread_name=508A967F.4080802%40gmx.de&forum_name=user-mode-linux-user
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