am2 MBs - 4g + SCSI wipes out root partition

[Gary Jennejohn]

On Sat, 11 Oct 2008 12:08:00 +0200 (CEST)
Jean-Marc Zucconi <jmz at FreeBSD.org> wrote:

> >>>>> Gary Jennejohn writes:
> 
>  > On Fri, 10 Oct 2008 14:29:37 -0300
>  > JoaoBR <joao at matik.com.br> wrote:
> 
>  >> I tried MBs as Asus, Abit and Gigabyte all same result
>  >> 
>  >> Same hardware with SATA works perfect
>  >> 
>  >> Same hardware with scsi up to 3.5Gigs installed works perfect
>  >> 
>  >> what calls my attention that all this MBs do not have the memroy hole 
>  >> remapping feature so the complete 4gigs are available what normally was not 
>  >> the case with amd64 Mbs for the Athlon 64 CPUs
>  >> 
>  >> some has an opinion if this is a freebsd issue or MB falure or scsi drv 
>  >> problem?
>  >> 
> 
>  > It's a driver problem.  If you want to use SCSI then you'll have to limit
>  > memory to 3.5 GB.
> 
> Is this specific to the Adaptec driver or all of them are affected by
> the bug? I am considering upgrading to such a config, but with a
> tekram controller (sym).
> 

I observed the same problem with ahc.  Can't say whether the sym driver
has the problem because I don't have such a controller.  I've now taken
my SCSI drives out of service and am using SATA only.

---
Gary Jennejohn