[CentOS] Adaptec 39320A woes

> I did the same (changed the speed in the BIOS settings) and it's
> working.  I tried it at 80 but I think I'm going to bump it to 160 and
> see if it works.

The 160 speed works as well for me.  It seems that only the 320 speed
causes a problem.  Which is interesting because Dell says that the drive
should be able to operate at 320 as well.