[lug] SW Raid question

Hugh Brown hugh at math.byu.edu
Tue Jul 24 21:30:42 MDT 2007


> So the disk2 mbr post install is the only one that's different.
> 
> Difference at offsets 0x01b8 0x01b9 and 0x01ba
> 
> 24 25 07 for the disk2 postinstall
> 23 b0 06 for the others
> 
> -----------------------------------
> Conclusions:  If you set up sw raid outside of the installer, make sure 
> grub bits get installed to the mbr of all drives used.  If you do set up 
> your machine with sw raid at install time, the drive will have the right 
> grub bits.  If a disk fails, as part of adding it back in, make sure you 
> put the grub bits back.
> 
> I have no idea what is going on at those three offsets.
> 
> Hugh
> 


I did find this page http://mirror.href.com/thestarman/asm/mbr/GRUB.htm 
which seems to indicate that those three offsets are intended as an NT 
Drive Serial Number.

Hugh



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