[CentOS] Booting into a shell and skipping init

m.roth at 5-cent.us m.roth at 5-cent.us
Wed Jun 9 17:21:35 UTC 2010


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> I'm trying to boot into the shell of a XenServer 5.6 (I believe CentOS
> 5.5 underneath).  I added init=/bin/sh to the boot line, but I'm still
> getting an error.  Here is the boot line:
>
>  mboot.c32 /boot/xen.gz com2=57600,8n1 console=com2,vga dom0_mem=752M
> lowmem_em
> ergency_pool=1M crashkernel=64M at 32M --- /boot/vmlinuz-2.6-xen
> root=LABEL=root-ju
> aihdrs ro console=tty0 xencons=hvc console=hvc0 init=/bin/sh ---
> /boot/initrd-2.
> 6-xen.img
>
>
> And here's how it breaks:
>
> Waiting for driver initialization.
> Scanning and configuring dmraid supported devices
> Creating root device.
> Mounting root filesystem.
> kjournald starting.  Commit interval 5 seconds
> Setting up other filesystems.
> Setting up new root fs
> EXT3-fs: mounted filesystem with ordered data mode.
> no fstab.sys, mounting internal defaults
> Switching to new root and running init.
> unmounting old /dev
> unmounting old /proc
> unmounting old /sys
> /bin/bash: : No such file or directory
> Kernel panic - not syncing: Attempted to kill init!
>
*bang*
I *just* fought with that yesterday. It's a grub thing - the entry for
what it's booting needs a line reading
root (hd0,0)
or whatever is appropriate. Note that if there's one bootable
drive/partition, it will define that as hd0.

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