I had already gotten rid of rghb. The grub2 entry on the key for booting the LiveCD reads:
menuentry "CentOS 6.4 Live" { set root=(hd0,1) linux /CentOS-Live/isolinux/vmlinuz0 root=UUID=A352-6D7C ro liveimg nodiskmount nolvmmount selinux=disabled live_dir=/CentOS_Live/LiveOS initrd /CentOS-Live/isolinux/initrd0.img }
The contents of the LiveCD appear in /CentOS_Live as one would expect. The boot fails right after a device scan (obvious by tens of lines listing "ataN:", "scsiN:", "sd 0:0:0:0:", etc.) with the "No root device" error below.
In the rdshell, /dev/sda shows up as the internal system hard drive rather than the USB key. The USB key does not show up as /dev/sdb nor any other device that I can find. Finally, I looked in /dev/mapper (duh); it contains /dev/mapper/control, but no /dev/mapper/live-rw.
Sorry for any confusion, -G.
m.roth wrote:
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=
-- Glenn Eychaner (geychaner@lco.cl) Telescope Systems Programmer, Las Campanas Observatory