It is true that the BIOS boot partition is limited to a single physical disk. What I normally do is to replicate it to the other disks with "dd". As it remains unchanged upon updates, it should be fairly easy to add this feature to Anaconda, just after the BIOS boot installation.

Of course, after a disk failure, you have to remember to make a copy again to the new disk.

Another way to automate this would be to have a "checkBIOS" service upon boot that verifies if all physical disks have the same BIOS-Grub MD5 and if not, it suggests to replicate or to continue. It can even save the initial MD5 somewhere under /etc to compare further checks against it.

Carlos


On Sat, May 14, 2022 at 7:52 PM Peter Boy <pboy@uni-bremen.de> wrote:
Last meeting we discussed whether we should change to GPT as default partitioning. Now some of our members have submitted a change proposal to make GPT the default partitioning for new installations. I think this is actually long overdue, yet better communication among us would actually be nice as well.

https://fedoraproject.org/wiki/Changes/GPTforBIOSbyDefault

I don’t know if there is a potential problem. Some time ago, if I remember correctly it was Neil who wrote in a discussion about storage that a software RAID is no longer possible, because - so my memory - the biosboot partition is not replicable over multiple disks. So if the previous boot disk fails, you can't just boot from another disk. 

I never checked it and didn’t read the technical specification. And all our server have hardware raid. So, does anybody knows about it in detail?


Peter

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