Autochk

[KaosKnight]

I'm using VB to emulate XP and test out some front ends for my future carPC set-up. I recently changed my ntoskrnl.exe with a modified version that changed my boot-up screen. Now, whenever I try to boot XP, I get a "missing autochk" error; it skips autocheck, and then the virtual system shuts down. I've tried safe-mode, debugging mode, and last known config, to no avail. Any suggestions?

[KaosKnight]

Alright, did some searching, and the problem seems fairly common for people Dual botting XP and Ubuntu. It seems the XP partition hides itself; usually you can just open it in GParted and unhide it, but since mine is through Virtual Box, it's not an actual partition; right? So, how would I go about doing this?