[Bug 492301] Re: Can not mount /dev/loop1 on /cow

[pemuro]

Got he same message, but AFTER a first successfull boot and exploring
session on my netbook with boot-problems from internal hdd. I used the
newes version Ububtu 11.04   So the bug is not yet fixed or do I have a
hardware-problem?

I  need a persistance-file (on a 16GB-stick I chose the max. 4GB for
persistance ) giving us the huge advantage over a life-CD:  I could
save in the persistance file the WLAN-settings, set and save e-mail-
service in evolution, and it worked.  Wanted to also try to install
persistantly Thunderbird, to possibly read my local folders on the olld
hdd.   All NOT possible with no good size persistance-file.

I created the PENDRIVE on a PC under WinowsXP SP3 and had to learn to
switch off aVra's aVira-Guard, for otherwise it blocks access to the
autorun.ini file which the install tries to write at the end of
installytion.

But even with boot-order ALL set to usb-hdd, USB-floppy,  ()USB-flash
not available on this PC).  Still Ubuntu would not boot but WindowsXP
did (even tjough boot from other devices was DISABLED!) Though I had
turned off aVira-Guard during the previous session, by default it is
turne ON again after re-booting  and blocked again.

During the successfull life-Ubunto-session, I tried to create a
permanent full istallation of Ubuntu in a 35GB PRIMARY partition (with 2
others on a 500GB USB-hdd), but the installer was not able to create a
swap-partition within it, thats why I why I removed said partition on
the PC and created a 31GB Linux-partition set aktiv (i.e. bootable)  and
a 4GB swap-partition without a drive-letter.

Mounting the ubuntu-11.04-.iso on a virual DVD-drive by 120%alcol and
starting the full installation I got an ERRor-msg: Read-error. the disk
will not be bootable!

Help !?

.

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https://bugs.launchpad.net/bugs/492301

Title:
  Can not mount /dev/loop1 on /cow

Status in “usb-creator” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: usb-creator

  LiveUSB stick created using this program failed to boot. The size of
  my usb stick is 2GB.

  The version of usb-creator I have is 0.1.16 (according to synaptic)

  1. I created a persistence-enabled 128MB (default value) drive with xubuntu 9.10 desktop i386 iso image.
  The stick booted fine and the OS was running ok.

  2. I created a persistence-enabled 1.2GB (max value by pulling the
  slider all the way up). The stick fails to boot by giving the message:
  'Can not mount /dev/loop1 on /cow'

  I have re-verified the checksums of the iso that I was trying to use
  and they are fine. I re-tried this particular step thrice and I got
  the logs during that third attempt.

  Using the instructions at: https://wiki.ubuntu.com/DebuggingCasper , I
  got the following in casper.log:

  --
  Begin: Running /scripts/casper-premount ...
  Done.
  Done.
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  /init: line 1: can't open /dev/sr0: No medium found
  stdin: error 0
  BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) multi-call binary

  Usage: mount [flags] DEVICE NODE [-o options,more-options]

  Mount a filesystem. Filesystem autodetection requires /proc be
  mounted.

  Options:
  	-a		Mount all filesystems in fstab
  	-f		don't mount
  	-i		Don't call /sbin/mount.<filesystem> helper
  	-r		Read-only mount
  	-t fs-type	Filesystem type
  	-w		Read-write mount (default)
  -o option:
  	loop		Ignored (loop devices are autodetected)
  	[a]sync		Writes are asynchronous / synchronous
  	[no]atime	Disable / enable updates to inode access times
  	[no]diratime	Disable / enable atime updates to directories
  	[no]relatime	Disable / enable atime updates relative to modification time
  	[no]dev		Allow use of special device files / disallow them
  	[no]exec	Allow use of executable files / disallow them
  	[no]suid	Allow set-user-id-root programs / disallow them
  	[r]shared	Convert [recursively] to a shared subtree
  	[r]slave	Convert [recursively] to a slave subtree
  	[r]private	Convert [recursively] to a private subtree
  	[un]bindable	Make mount point [un]able to be bind mounted
  	bind		Bind a directory to an additional location
  	move		Relocate an existing mount point
  	remount		Remount a mounted filesystem, changing its flags
  	ro/rw		Mount for read-only / read-write

  There are EVEN MORE flags that are specific to each filesystem
  You'll have to see the written documentation for those filesystems

  Can not mount /dev/loop1 on /cow
  --

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