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Re: software raid 1: how to remove a UUID from a device?

On Thu, Dec 04, 2008 at 07:10:44PM -0600, lee wrote:
> > On Thursday 2008 December 04 15:15, lee wrote:
> > > How do I remove the UUIDs from /dev/sda and /dev/sdb to prevent
> > > the automatic detection from being confused again?
> > Check out the --zero-superblock mode for mdadm.  It is documented in 'man 8 
> > mdadm'.
> cat:/home/lee# mdadm --zero-superblock /dev/sdb
> mdadm: Couldn't open /dev/sdb for write - not zeroing
> It's the same for sda. Do I need to stop all md devices involving
> these disks to remove the UUID? If so, how do you do it when it's not
> possible to stop them while the system is running (other than booting
> from CD or the like)?

whilst booting add init=/bin/bash to the kernel options, or boot up
knoppix or something like it

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