Quote from nakre

Maybe there is another way to have this Asrock J5040 accepting legacy boot option...

No.

Quote from nakre

Hi - thanks for pointing in that direction.

Puh... seems to me a bit to deep inside my systems machine room for my liking.

Maybe there is another way to have this Asrock J5040 accepting legacy boot option...

The only alternative would be for you to find new MB with "Legacy" mode.

or do a new fresh OMV install on it or install first debian in UEFI and then OMV.

Quote from raulfg3

or do a new fresh OMV install on it or install first debian in UEFI and then OMV.

That would work too. I would choose "Fresh OMV install" option which would mean, including reconfiguration of my drives, shares etc., about 2-4 hours worth of work. Done that twice before.

Quote from chente

Avoid those 2 to 4 hours of work by using omv-regen.

Thread

[How to] Migrate/Restore OMV Settings to Another System with omv-regen

UTILITY TO MIGRATE OMV CONFIGURATION TO ANOTHER SYSTEM OR
DO A NEW OMV INSTALLATION AND KEEP THE SETTINGS

omv-regen

Copy and paste the following line into a terminal and run it as root or with sudo.
wget -O - https://raw.githubusercontent.com/xhente/omv-regen/master/omv-regen.sh | bash

• STEP 1. Create a backup of the original system with omv-regen.
• STEP 2. Do a fresh installation of OMV on the disk you want and connect the original data drives.
• STEP 3. Use omv-regen to migrate the settings from the

…

chente

Apr 29th 2023

Thanks. This is a great solution. Did not know about this.

Quote from chente

You are welcome. I had a lot of fun creating it and I continue to have fun maintaining and improving it.

Just one question/clarification: the backup create dir in /ORBackup (root directory on OMV system drive). When I reinstall OMV this directory will be removed, right?, so I copied it and it content to the drive that is not part of OMV but accessible from my main Linux box (second internal drive). When OMV is reinstalled I will need to copy "/ORBackup" back to OMV root directory and run it from there, right?. I am not sure that I am clear enough but I hope you can understand my question. Please advise.

Quote from chente

The default folder is /ORBackup but you can change it to whatever you want.

When you reinstall OMV this folder logically disappears. The data disks are also not accessible because at that point you just reinstalled OMV and the disks are not mounted until you regenerate the system, so those disks are also useless.

The easiest thing is to use WinSCP (or similar in Linux) to copy that folder to the desktop of your PC, it takes up very little space. When you install OMV, copy it back to rootfs in the folder you want and that's it, you can regenerate.

Thanks. That is what thought and that is the reason I copied it to second internal drive in my Linux box. I guess I could "rlogin" or "ssh" as root to the OMV and use "scp" to copy ORBackup folder. Thanks again for help and detailed explanation.