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Question

BIOS: Change back from Legacy to UEFI

Mar 30, 2017 2:01PM PDT

While trying to fix a boot error (0xc0000034) on my laptop I accidentally changed my computer's BIOS from UEFI to Legacy, is there a way to change it back?

The computer is clean so it doesn't matter if it's a method that causes loss of data. I have a bootable USB with windows 10 (maybe Cool on it. At some point I got into the menu for this, but must of the times I just get straight to the BIOS. And when I got to the menu for installing windows, I got the error message "windows cannot be installed on this disk. The selected disk is of the GPT partition style." so I couldn't get past from there anyway

The computer is an MSI GE70 2QE

I can't find a way here to post photos from my iphone (and can't use the computer), but here is what it says on the startup screen of the BIOS. The only options I have from here is either "Delete RAID volume" or "Reset Disks to Non-RAID" (none of which I know what it means)

Physical devices:
ID. Device model. TYPE/STATUS(Vol Id)
0. PLEXTOR PX-256M6. Member Disk (0)
1. PLEXTOR PX-256M6. Error Occurred (0)
4. HGST HTS721010A9. Non-RAID Disk

I know I ****** up and should have done more research before tweaking with this, but the damage is done so I greatly appreciate any help

Discussion is locked

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Answer
Yes, just change the BIOS back to Legacy or CSM mode
Mar 30, 2017 2:11PM PDT

Personal story. I was visiting at my FIL's home. He was out of town and let us stay there for a couple nights when we were traveling. I didn't have password to his windows 10 UEFI computer. So, I changed it to Legacy/CSM and put in my Linux Mint 17 DVD and booted to it instead.

I forgot to remove it. When he got home, he called and was all excited about seeing Linux instead of his Windows. I walked him through the steps on setting BIOS back to UEFI and rebooting. His world was restored, LOL.

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Answer
When you encounter those new RAID on boot machines.
Mar 30, 2017 2:16PM PDT

The news is rather annoying. Google up how this is almost always the same as the rather awful Signature PCs that you can't without exact steps from the maker install Windows.

Get in touch with MSI about what drivers and steps are required to get back to factory condition.

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Solved it
Mar 30, 2017 3:03PM PDT

Actually, I could just go back to the BIOS by pressing del at startup to change it back. Might have been unclear in my formulation of the issue, but it's solved now!

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Good to read.
Mar 30, 2017 3:05PM PDT

Be sure to have the owner make and store restore media on this RAID booting machines. They may have to pay for such later.