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WDe and GPT, booting DOS (Users)

posted by tom Homepage, Germany (West), 15.12.2022, 20:14
(edited by tom on 15.12.2022, 21:31)

> > did you re-invent "Hybrid GPT" by writing a MBR into the boot sector?
>
> I'm also curious why not to go this way. AFAIK GPT can have a "protective"
> MBR that does nothing useful just stops old disk tools to not screw the
> data as they don't understand GPT. By GPT-aware OSes and tools the MBR part
> should be ignored so I don't see reason why the MBR cannot be old good
> functional one that can load other boot sector within 2TB limit. Then any
> DOS should not complain if it found MBR on right place. Am I wrong?
you are probably right.
the problem here is this 'probably'.

a "Hybrid GPT" is probably way more 'idiot proof' than Japhets 'you have to know every boot sector byte by its first name' method.

replacing a protective MBR (meaning "nothing to be seen here") with something like "a couple of small partitions, one 100GB FAT32 partition, then more of "nothing to be seen here") shouldn't result in problems.

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