questions on boot up

pegasis

Member
May 17, 2014
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I have a laptop that I experiment with.

I took a laptop HD and installed it and put linux on it.

now I removed that HD and installed the original laptop HD with win 8.1 in it.

but when it boots up I get a grub prompt, saying partition error, entering rescue mode, grub rescue

what does this mean, and how can I get this laptop to boot and see the
windows 8.1 drive again