Hi
The OS's are on seperate partitions on the same disk
Multiboot menus are tough to diagnose. I stopped using them a long time ago and I'm not familiar with them anymore.
How to get /create a xp rescue disk?
I mean to boot from your xp install cd and repair from there if possible
treied safe mode- didnt help
Tnx
Have you had diskcheck come up scanning your drive at boot time? Sometimes it thinks it's fixing things when it breaks things instead. I've been getting it a lot since win 8. It's fine with single boot, but it throws a fit multi-boot.
If you tried reinstalling xp and it failed, then you may have bigger problems