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I have two hard drives with win8 installed to both of them. Sometimes, when I boot from the second one (with F12 boot-menu and the second drive selection) and later reboot and start my PC from the first one, I get a disk error for a consistency problem. Windows ask for a disk check and after that, I can't anymore boot from the second drive or have access to it. Why this happens and how can I prevent it? What options do I have except from reinstalling windows? Thanks Stavros

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I would start by replacing the hdds. It sounds like the second hdd has some sector problems. –  Ramhound Dec 1 '12 at 10:13
Check how you shutdown both systems. Is it a full shutdown or a "hybrid" shutdown (partial hybernation - new in Win8 - only OS state is hybernated). I think hybernation state is considered no longer valid after disk writes - maybe this is the reason for consistency problems later when booting drive. –  snayob Dec 1 '12 at 13:33

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