SFC problem

[hoppy]

Hey, need a little help from you guy's.

I've got a good working unattended XP installation cd. Now in order to create more space for more drivers and progs I removed some stuff. Now the problem is that if I run sfc /scannow it doesn't recognize my XPcd, not the original one and not the unattended. It keeps prompting for the right cd. Any ideas for what file its looking for? win51 tags and so are on the root.