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I specified rdinit=/bin/sh and manually booted the system (in chroot) from command line, complete with mounted filesystems, network services and X desktop. The init is still busybox's /bin/sh.

The problem is that I see many uncollected "zombie" processes.

How to start proper init, but not all boot scripts again? I feel that if I "exec chroot /mnt /sbin/init" then it either starts extra things or exit with some error and "kernel panic".

(Don't advice just to reboot)

Update: Just executed into system bash (instead of busybox's one) exec chroot /mnt /bin/bash and now zombies gone.

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Check out how Busyboxs init works: spblinux.de/2.0/doc/init.html and tldp.org/HOWTO/From-PowerUp-To-Bash-Prompt-HOWTO-6.html is good too –  micke Jan 10 '12 at 16:08
This file must be on the kernel ramdisk instead of on the root filesystem. –  bZezzz Jan 10 '12 at 16:21

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