Dual boot/Error loading operating suytem

Iam using dual windows boot in 2 harddisk, one is xp and the other one is win 7. But, when i start booting in windows 7 it says error loading operating system... How to fix this? tnx for replies...
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More about dual boot error loading operating suytem
  1. was Windows7 installed first?
  2. Best answer
    In the microsoft world, older OS's must always be installed before newer OS's. A repair install of win 7 may fix it, but you should have installed XP first, then 7.
  3. yes i installed windws 7 on another harddisk first..
  4. How to restore Windows 7 after Windows XP installation is explained in this article:
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