Asus M2N with two sata disks.

[韓家標 Bill Hacker]

Eimar Koort wrote:
> Hi all,
> 
> Motherboard: Asus M2N [1]
> Bios version: v02.58
> 
> When two SATA disks are added to machine, then it does'nt boot up or
> sometimes it can boot up but detaching second disk "like mad". Several
> months ago it was so 'stable', that i could boot up and create geom mirror
> (Jul 3). After updating several times things went update by update more
> unstable. At the moment machine is usable only with one disk.
> Second disk is tested with other operating systems and it works. Also
> changing sata channels doesn't make it better.
> 
> And question: has anyone same or similar problem or has found a cure for
> this problem?
> 

Yes.  Adding HDD (PATA or SATA) or even a second NIC on an ASUS P5K.

A new Power supply fixed those and other similar problems, but not before I had 
bought a GigaByte G33-DS3R replacement MB - and hit the same wall.

Though I have a dual-trace Fluke 'Scopemeter', the PSU was so cheap I never did 
check to see if it was voltage drop or just noise spiking.

Not to say this applies in your case, just that it is reasonably easy to check.

Bill