Ubuntu Image with both - UEFI and Legacy support



  • Hey guys,

    in the past we tried to use an ubuntu Image for your (in most cases) fujitsu computers with legacy bios and that worked good. But now we are forced to switch to efi boot since more and more hardware doesn’t support legacy bios anymore and only running on uefi.
    So my question is, is it possible to use one ubuntu image which is running on computers with legacy bios and with uefi as well?
    Otherwise we will have to distribute two separate images one with uefi and the other one with legacy.

    I found that it’s possible to convert an ubuntu system from legacy to uefi but as I understand, that system won’t boot into legacy anymore.
    Anyone with the same problem or maybe with a solution?

    Thanks in advance!


  • Developer

    @Oleg As far as I know George is perfectly right here. Can’t think of a way to have an image that would run on legacy BIOS as well as on UEFI only machines. Partition schema is different…



  • @george1421 We had to switch earlier, you’re right. I thought there is maybe possible to create a ubuntu image, which is supporting both hardware types. There are about 500 computers with legacy and the next hardware will run on uefi.

    If we reimage the 500 players, they won’t run as the uefi is not activated in the bios…


  • Moderator

    @Oleg said in Ubuntu Image with both - UEFI and Legacy support:

    Otherwise we will have to distribute two separate images one with uefi and the other one with legacy.

    I can’t speak to ubuntu, but for windows this is what we must do. We have one image for bios and one for uefi. It not a nice solution but the easiest to maintain and will avoid any future upgrade issues (again I’m talking future Windows upgrades).

    If you don’t want to have 2 images on your campus it may be time to switch everything to uefi as they are reimaged. Most current systems will not downgrade to bios anymore so uefi is the only solution. It may be time to just leave bios behind.


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