Re: how to revert from ext3 back to ext2?
On Tue, Jan 11, 2005 at 04:53:18PM +0000, Thomas Adam wrote:
> --- Nomen Nescio <nobody@dizum.com> wrote:
> > My /home and / partitions are ext3. I'd like to change them to
> > ext2. Can I do this just by umounting and remounting them that way?
>
> You need to remove the journal. You'll have to boot from a rescue CD of
> some kind, and do something like:
In case you are feeling adventurous, you can probably also do it if you
boot with "init=/bin/sh" as a boot parameter. This should put you in a
shell with only / mounted read-only, and nothing else. Only the editing
of /etc/fstab must then be done as a first step, before the the reboot,
and after you are done with the tune2fs commands, I would just reset the
PC (no danger for your files, everything was mounted read-only or not
mounted at all).
Frank
> 1. Check to make sure the partition you're wanting to declare as ext2 is
> not mounted. If it is, umount it.
>
> 2. # tune2fs -O ^has_journal /dev/hdX
>
> (to remove the journal -- where /dev/hdX, is the device in question)
>
> Repeat the above steps for as many partitions as you want to make ext3 ->
> ext2.
>
> 3. # mount /dev/hdX -o rw /mnt
>
> 4. Edit /mnt/etc/fstab -- and change the fs-type to ext2 [1]
>
> 5. Reboot.
>
> (That should just about cover it)
>
> -- Thomas Adam
>
> [1] This assumes that /dev/hdX is your "/" partition, of course. If it
> isn't you'll have to mount your "/" partition and edit /etc/fstab before
> you reboot.
>
> =====
> "The Linux Weekend Mechanic" -- http://linuxgazette.net
> "TAG Editor" -- http://linuxgazette.net
>
> "<shrug> We'll just save up your sins, Thomas, and punish
> you for all of them at once when you get better. The
> experience will probably kill you. :)"
>
> -- Benjamin A. Okopnik (Linux Gazette Technical Editor)
>
>
>
>
>
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