[CentOS] CentOS LiveCD on USB

[m.roth at 5-cent.us]

Glenn Eychaner wrote:
> I have been following these instructions:
> https://www.centos.org/forums/viewtopic.php?t=501
> to put a bunch of utilities (Clonezilla, SystemRescue, CentOS
> netinstall/rescue, etc.) on a single USB key.  It works great for
everything (including
> Ubuntu Live) except the CentOS 6.4 LiveCD. (You can see my postings at
the bottom of
> the forum.) When booting the LiveCD, I got:
> 	Kernel panic - not syncing: Attempted to kill init!
> 	Pid: 1, comm: init Not tainted 2.6.32-358.el6.i686 #1
> After removing "quiet" and adding "selinux=disabled", I got more

Get rid of rhgb, too.

> information; the boot stalls after finding devices, and gives:
> 	No root device "block:/dev/mapper/live-rw" found
> dracut suggests adding "rdshell", which I did.  This was not helpful (I
> had no idea what to do in the dracut shell), but did notice that in the
dracut

> shell /dev/ did NOT seem to contain my USB drive at /dev/sdb as I would
expect.

When you boot from a USB key, it always shows as /dev/sda. Second, rdshell
is a grub shell.

Are you trying to boot from the USB? If so, I'd fix the grub menu on that,
if it's on /dev/sda1 of the flash drive, to use /dev/sda2 for the root=

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