Legacy > UEFI, 15.5 > 15.6 Pre-install Upgrade Questions

[hcvv]

@nrickert

UEFI booting requires an EFI partition. And if your disk is using DOS partitioning, then that needs to be a primary partition.

Is that true? Can’t he start from a clean disk? Remember that this is is new, fresh installation and nothing that is now on the disk must be kept.

[gogalthorp]

If a new install a EFI partition is created IF and ONLY IF

1. the drive is NOT DOS formatted
2. the drive has space to create the partition
3. this install is booted in EFI mode NOT legacy or manually adjusted to be EFI

An EFI partition is required if you are going to use EFI booting

[nrickert]

@hcvv

Remember that this is is new, fresh installation and nothing that is now on the disk must be kept.

That is far from clear. He does talk of “upgrade”.

You are correct that, with a clean install, this will be taken care of.

[hcvv]

@nrickert

That is far from clear. He does talk of “upgrade”.

Yes, it is a confusing problem definition. I tried to sort it out and my conclusion was that it needed:

• upgrade the firmware legacy > EFI;
• fresh installation of Leap 15.6, ignoring what is on the disk (where the user data of the earlier 15.5 could be restored from a backup);
• independent from it: deciding if secure boot is to be used.

But I could be wrong

As said,it is confusing and not 100% clear what the OP has and wants. Because of that I tried to get the information of when an UEFI partition should already be there vs. when it will be created by installation clearly posted here. I think we succeeded in doing that together. I hope te OP has got the message

[HealingMindNOS]

Perhaps, I’m over thinking this: On book-startup_en.pdf, p. 3, it says: “Secure boot on UEFI machines is supported…”

At Start-Up | openSUSE Leap 15.6, it says all I need are:

" To load drivers not shipped with openSUSE Leap, do either of the following:

• Before the installation, add the needed keys to the firmware database via firmware/system management tools.
  

• Use a bootable ISO that will enroll the needed keys in the MOK list on the first boot... "
  

I updated the firmware with the latest from ASUS less than a week ago, so I’m assuming the keys are there. I also assume the needed keys on the MOK list are on my 15.6 disk.

BTW: Fig 14.1 is the boot loader in Yast - I shouldn’t be fooling with that. And SDB:NVIDIA drivers - openSUSE Wiki doesn’t apply to me because I don’t use nvidia proprietary drivers.

The way I see it now, I only have to set up secure boot, enable UEFI and TPM, disable CSM, then I should be ready to upgrade.

[HealingMindNOS]

I should have switched to UEFI platform a while back; that would have save me a lot of trouble:

In fact, I couldn’t boot back into 15.5 after that, so I went for the fresh install. Now I have:

Thanks to everyone for your help!