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I tried to dual boot Win7/Ubuntu, but the installer wouldn't recognize the free space on my hard drive, so I followed the advice of erasing RAID metadata with the command dmraid -E -r /dev/sda and that let me install Ubuntu, but when I rebooted my computer I was greeted with grub rescue.

Then, I tried to re-install Ubuntu, this time erasing the disk and completely disregarding Windows. I was hoping a fresh install would fix grub (as I don't care about Win), but I still get either grub rescue prompt, or (hd0) not found. The hard drive shows in fdisk and gparted.

I'm on an HP with triple core 2.6 GHz, 8 Gb ram.

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  • Are you sure you installed GRUB on right hard drive? – TheOneAboveAll Feb 28 '18 at 0:15
  • There is only one hard drive in the system. All externals have been removed. The screen shots are from my live session of Puppy Linux (sdb). – del sys32 Feb 28 '18 at 1:03
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I changed my BIOS setting from RAID/AHCI to Native IDE and it booted up directly. From what I read, there's supposed to be a performance penalty using IDE, but I haven't used it long enough to say for myself.

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