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Re: Support for mirroring of EFI System Partition

Could someone please elaborate on the fragility of UEFI?
Once again, is there anyone willing to explain a little more about this?

One of the problems that we're facing at this point and earlier in the
cycle of BIOS->UEFI upgrades is that UEFI is fundamentally larger and
more complex than BIOS. This is to be expected, as it's also vastly
more capable. However, we're still seeing implementors get things
wrong, either by incompetence or sheer laziness. The lack of real
compliance testing has been a major issue here, and things that
*should* work according to the spec still sometimes don't. The further
you go out from the core functionality, the more likely that is.

*However*, don't le my glib warning about broken implementations put
you off trying to do something clever and useful here.

Also, frankly, the fact that bootable disk mirroring works with MBR is because it was hacked together and not because it's ever been supported by legacy BIOS's. (I mean, arguably everything about legacy x86 is a pile of hacks...)


Jared Domínguez
Infrastructure Software Engineering
Dell | Enterprise Solutions Group

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