[nycbug-talk] OpenBSD, numbering disks...

[bruno]

On Tue, Jul 19, 2005 at 09:01:01AM -0400, George Georgalis wrote:
> On Tue, Jul 19, 2005 at 01:46:46AM -0400, Jesse Callaway wrote:
> >On Monday 18 July 2005 11:59 pm, George Georgalis says:
> >> What's the best way to assure my root ata disk doesn't get renumbered,
> >> when new sata drives are added?
> >>
> >
> >There isn't one. The number will get bumped. Not when you're running, but if 
> >you reboot. So I'm assuming this is only a problem when rebooting. Maybe you 
> 
> 
> The thing is, BIOS doesn't number them differently, ata is always
> first, then sata drives (there is no sata/pata in bios boot order, just
> hd-0,1,2,3,4...), it is the OS renumbering the drives, so I imagine it
> could be programmed or configured to do "the thing I expect" -- whether
> that is right or not.
> 
> dkcsum: wd0 matched BIOS disk 81
> dkcsum: wd1 matched BIOS disk 80
> 
> I think the only thing required is a "configuration" to make BIOS 0x80
> always map to wd0. 

You can probably do this with a kernel config file.