IBM HDs vanish on warm-boot?

Kent Stewart kstewart at
Tue Jul 17 03:16:53 UTC 2007

On Monday 16 July 2007, Steve Franks wrote:
> I just had this problem this week - drives are fine until you access
> one and then disappears.
> Checked my bios monitor page and 12V was only 11.8V.  Changing from a
> 300W to a 500W power supply magically fixed the problem...
> I don't claim that this is necessarily your problem, but it caught me
> off-guard and it's worth looking at.

I just finished rebuilding a system that went down on Saturday 
afternoon. It ended up being the power supply. Early on, I probably 
could have just replaced the ps but after a number of fsck's, followed 
by panics, there were files that were linked and etc. and the system 
wouldn't boot into single user mode. A rebuild using a brand new HD 
seemed the logical way out. I could mount the old disk and cp important 
directories or individual files onto the new HD.

It turned out that / was the only one trashed but backup files 
of /etc , /home/user's, and all of the port tarballs were ok. 

> Steve
> On 7/16/07, Roger Olofsson <raggen at> wrote:
> > Dear mailing list,
> >
> > I have 2 IBM HDs and one WD HD (ata) in an old pc and for some
> > reason FBSD 6.2 can't find the IBMs on a warm-boot. Cold-boot is
> > fine and, the WD is fine.
> >
> > The motherboard is an old Aopen AX34 and all settings are default
> > except for ACPI that's off.
> >
> > The first thought that came to mind was that one of the IBMs are
> > going bad, but, I find it very unlikely that both HDs are doing it.
> > One is a 120 and one is an 80gigger but both 'vanish' on warm-boot.
> >
> > Some other setting in bios than ACPI?
> >
> > Grateful for any answer,
> >
> > /Roger
> > _______________________________________________
> > freebsd-questions at mailing list
> >
> > To unsubscribe, send any mail to
> > "freebsd-questions-unsubscribe at"

Kent Stewart
Richland, WA "I am Andean project".

More information about the freebsd-questions mailing list