- Jan 6, 2002
- 22,759
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DFI Lanparty MB, I have 3 HD's with my AHCI turned on in my BIOS. My drive with Windows 7 & Ubuntu is set as the 1st boot device. But when I turn my PC on I get "INVALID SYSTEM DISC" unless I press escape before it tries to access to the drive to go into the MB's boot selection menu. When I go into the menu I select my 1TB WD Black and my boot loader comes up fine. I'm definitely selecting the same drive that's set as the 1st boot HD in my BIOS when I'm pressing escape. I'm not exactly concerned here, but I am confused. The only thing I can come up with is when I press ESC it's somehow accessing a different boot loader, that doesn't make much sense to me. But it's about all I could come up with. I'm thinking I could just reinstall GRUB and that would fix it, but I'm curious why one method works and the other doesn't. So I'd like to know what's going on here before I just put a new GRUB loader on.