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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

> 
> 
> -- 
> "Don't let them, daddy. Don't let the stars run down."
> http://adin.dyndns.org/adin/TheLastQ.htm
> 
> 
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-- 
"I'll be glad to talk about ranching, but I haven't seen the movie. I've heard about it. I hope you go --you know-- I hope you go back to the ranch and the farm is what I'm about to say."

	- George W. Bush
01/23/2006
Manhattan, KS
Explaining that he hasn't seen Brokeback Mountain yet

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