Comment 21 for bug 492301

Hi,
I was able to get over this problem by creating the usb stick with the next version of usb-creator (0.x.20). In fact I was able to create persistence-enabled usb sticks for versions botth 9.10 and 10.04 with no problems none whatsoever with the next version of usb-creator (i.e. after 0.1.16).

I think the problem was probably with 0.1.16.

Sorry for not closing/updating the defect. I was hesitant to declare that the defect was solved because even others chipped in with similar sounding problems. I did respond to their concerns that my problem did go away and that I was able to proceed, but I don't think that quite solved the issues of others.

Thanks much for getting to this defect. It really boosts the confidence of the users that Ubuntu takes these submitted launchpad bugs very seriously.

And finally, kudos for a wonderful distro! (I didn't even have to consider an another linux option since last two years)

Praveen

--- On Fri, 3/9/10, Robbie Williamson <email address hidden> wrote:

> From: Robbie Williamson <email address hidden>
> Subject: [Bug 492301] Re: Can not mount /dev/loop1 on /cow
> To: <email address hidden>
> Date: Friday, 3 September, 2010, 10:39 PM
> Does this bug occur if you create the
> USB stick without persistence
> enabled? If not, then this could be fixed in Maverick and
> needs fixing
> in Lucid-updates, see
> https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/627672
>
> --
> Can not mount /dev/loop1 on /cow
> https://bugs.launchpad.net/bugs/492301
> You received this bug notification because you are a direct
> subscriber
> of the bug.
>
> Status in “usb-creator” package in Ubuntu: Confirmed
>
> 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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> https://bugs.launchpad.net/ubuntu/+source/usb-creator/+bug/492301/+subscribe
>