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I have two hard drive install on a system, one with Fedora installed, and one with Windows. They are NOT dual booting and they do not power on at the same time.

I disconnected from the Fedora hard drive and connected to the Windows hard drive to do some work, but after I connected back to the Fedora hard drive, the system won't boot. It says no system install and insert boot disk.

I know the Fedora OS is still there because when I connected the hard drive to another computer I can still see all the files.

One assumption I came up with is that the system BIOS is UEFI BIOS and Fedora is installed using LVM, and there might be a conflict there, but I am not sure.

Any help on the issue?

Thanks in advance.

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UEFI has nothing to do with the filesystem in question. There are a few options. The MBR went toes up. The drive went kaput (it's a technical term), or perhaps the drive did not get connected back up all the way. Does the BIOS see it? Does this system see it when booted to a live CD?

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The hard drive is definitely connected, not sure how to see it with live CD. But BIOS definitely sees it. – YTKColumba Oct 9 '12 at 0:14
Get a liveCD like the Fedora install CD, SystemRescueCD, Debian, Ubuntu... anything like that. What do you get when you do fdisk -l? – UtahJarhead Oct 9 '12 at 1:38

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