BSOD: INACCESSIBLE_BOOT_DEVICE, real hardware

This is my first bug report so be gentle

Revision 22328 (this morning).

Real hardware BSOD on bootup so no screenshot but I transcribed the screen by hand.

===START BSOD===
(stuff)
Loading scsiport.sys...
Loading atapi.sys...
Loading buslogic.sys...
Loading class2.sys...
Loading disk.sys...
Loading vfatfs.sys...
Loading bootvid.sys...
Loading ndis.sys...

A problem has been detected and ... prevent damage to your computer

INACCESSIBLE_BOOT_DEVICE

Technical information:

• • • STOP: 0x0000007B (0x00000000,0x00000000,0x00000000,0x00000000)

Frames:
<ntoskrnl.exe:1D50 ntoskrnl/ke/bug.c:493 KeBugCheckEx
<ntoskrnl.exe:1D67 ntoskrnl/ke/bug.c:514 KeBugCheck
<ntoskrnl.exe:85615 ntoskrnl/io/iomgr.c:421 IoInit3
<ntoskrnl.exe:826FC ntoskrnl/ex/init.c:654 ExpInitializeExecutive
^(might be 82BFC, I can't read my own handwriting)

<ntoskrnl.exe:4885 ntoskrnl/ke/main.c:108 KiSystemStartup
<ntoskrnl.exe:8152D ntoskrnl/ke/main.c:291 _main
<0>

KEBugCheckWIthTf at ntoskrnl/ke/i386/exp.c:1241
A problem has been detected and ... prevent damage to your computer

(this line paraphrased) Problem seems to be caused by ntoskrnl.exe
KMODE_EXCEPTION_NOT_HANDLED
Technical info

• • • stop: 0x0000001E (0x800000003,0x8006D017,0x00027F20,0x00007F20)

*ntoskrnl.exe - Address 0x8006D017 base at 0x80000000
Timestamp 0x0
===END BSOD===

details on my system:
Reactos shares the first harddrives first primary and only partition with windows XP ala fat32.
The computer has two hardrives.
Reactos was built with Linux(gentoo) gcc is version 3.3.5
Im booting freeldr.sys from grub. grub is on the second harddrive,
freeldr is on the first. freeldr works fine without complaining.

Processor is Pentium 4, ram is 768 (512+128).

Its possible it's a problem with my system since it has done funny things in the distant past (like freeze on the bios screen), but both linux and windows are currently running fine.