Hi, I hope you can help me out with this one, or give me some ideas 'cause Im running out of them...

In April I ordered and received an AF HDD to prepare our OS deployment enviroment for these new drives. We're running MDT2010 with SCCM 2007.
I got the Seagate Momentus Thin ST320LT007 (320GB), plugged it in to a E6320.

First, I just tried to install it w/ making any changes, which of course failed because of the misalignment (got a BSOD in the XP setup)
I updated our WinPE3.0 boot image with 982018 (update 3), made sure I hade the latest RST Storage Drivers and everything worked out just fine. I've verified with DellAFDT.exe that the disk partition is aligned.

But now when we've started to get our new Latitudes (E6420/E6320) with the AF disks, I got the BSOD back again (for XP). The disk is now: Seagate Momentus Thin ST250LT007 (250GB). I replaced it with the previous 320LT drive and that one worked. (same E6320 chassi, just to verify)

Now, I checked again with DellAFDT.exe and the 250LT is aligned and is recognized as Advanced Format. I went back to my old WinPE3.0, unpatched, tried again and that one came out as misaligned (duh..). Now I dont get a BSOD but do get poor preformance.

BSOD reads Unmountable Boot Volume, and it shows up after the Task Sequence has booted up in XP the second time after been installing the drivers and joining the domain.
BIOS settings is set to default (RAID), current version A05.

I appreciate any help!

Thanks!