Installing new motherboard

hifi100 · 10-22-2017, 03:01 PM

hi, I am using openbsd 6.2. tommorow I will be assembling a new pc which will be uefi. presently I have 6.2 installation which I installed using my old PC (bios). what I want to is if I just plug in my old installation to the new uefi board will it work?

hifi100 · 10-22-2017, 03:41 PM

any ideas?

hifi100 · 10-22-2017, 03:49 PM

if its not possible how can I recover some files from the installed ssd?

cwizardone · 10-22-2017, 06:26 PM

A couple of months ago I installed a new motherboard/CPU/RAM and the Linux distribution I use, Slackware64, fired right up without a problem. If the BIOS can be set to "Legacy" or "Auto" you might have the same experience.
Good luck.

hifi100 · 10-22-2017, 06:42 PM

Quote:

Originally Posted by cwizardone

A couple of months ago I installed a new motherboard/CPU/RAM and the Linux distribution I use, Slackware64, fired right up without a problem. If the BIOS can be set to "Legacy" or "Auto" you might have the same experience.
Good luck.

problem is that the motherboard I am planning to buy doesn't seem to have legacy mode (l think). I Googled asus h110 legacy but got no useful results.

frankbell · 10-22-2017, 08:02 PM

It's been years since I did a motherboardectomy--it was before I used Linux--but, when I did, the installed OS worked just fine.

One suggestion I have is to take a picture of the old board, showing all the connectors and the labels of their ports. It can help making plugging stuff into the new board much easier.

colorpurple21859 · 10-22-2017, 08:20 PM

Not sure exactly how to do this in openbsd, but this is a rough outline of what you have to to do.
create at least a 200MB partition type EF00 efi partition
create /EFI/boot directory on the efi partition
Then copy some sort of <file>.efi as /EFI/boot/Bootx64.efi.
maybe this will help: https://blog.jasper.la/openbsd-uefi-bootloader-howto/

cwizardone · 10-22-2017, 08:23 PM

Quote:

Originally Posted by hifi100

problem is that the motherboard I am planning to buy doesn't seem to have legacy mode (l think). I Googled asus h110 legacy but got no useful results.

On my Asus board with a AMI BIOS, the settings can be found
via, Advanced Mode, Boot, Boot/CSM (Compatibility Module).

hifi100 · 10-23-2017, 11:08 AM

Just finished installing Linux Mint in UEFI mode.

colorpurple21859 · 10-23-2017, 11:53 AM

Quote:

Just finished installing Linux Mint in UEFI mode.

Did you install over your openbsd or is this a separate installation?

hifi100 · 10-23-2017, 12:58 PM

Quote:

Originally Posted by colorpurple21859

Did you install over your openbsd or is this a separate installation?

Wiped the entire drive and installed Mint.

anisoptera · 10-30-2017, 09:39 AM

Probably too late - but for future reference, OpenBSD has supported the creating of GPT partitions with an EFI system partition and installing the necessary boot files, since at least 5.9-release.

However, with an old DOS MBR setup, you'd probably be better of just backing up and reinstalling, as the install would have handled all of this for you and you'd get the benefits of moving to a GPT as well.