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soc:2009:pravin:journal:ubuntubko [2009/07/17 03:59]
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soc:2009:pravin:journal:ubuntubko [2009/07/17 05:55]
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 </​code>​ </​code>​
 +
 +Got some information about this error on [[http://​wiki.debian.org/​initramfs/​More|debian wiki]]
 +which says that
 +<​code>​
 +When switching another root device, initrd would pivot_root and then umount the ramdisk. But initramfs is rootfs: ​
 +you shouldn'​t pivot_root rootfs and can't unmount it. Just delete everything out of it (except the new block device node, if any),
 + ​overmount /, and exec the new init. (The klibc package contains a helper program in utils/​run_init.c to do this for you, 
 +and other packages have adopted this as switch_root.) ​
 +</​code>​
 +
 +Now, I don't know for sure, which files are not getting deleated and hence causing problem.
 +
 +==== A question ====
 +what is the differnece between debian script and ubuntu script that filesystem.squashfs is not working with ubuntu, but it works with debian?
 +
 +   - comparing ''​d/​scripts/​live''​ with ''​u/​scripts/​casper''​ --- too different, diff went crezy with this command.
 +   - comparing ''​d/​bin/​run-init''​ with ''​u/​bin/​run-init'',​ --- they are same.
 +   - comparing ''​d/​init''​ with ''​u/​init''​ -- not much of difference

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