---- Le jeu., 24 juin 2021 17:35:46 -0400 Bret Johnson <[email protected]>
écrit ----
>Paul:
[..]
>> ... And so, it seems to me that there is not much reason to create
>> MBR partition tables today.
>Not true at all. Even a GPT-formatted disk is REQUIRED to have an MBR in
>sector 0 (called a Protective MBR).
Ok, part of GPT install is to install a protective MBR partiton table... but I
meant, having FreeDOS MBR partitions,
make it a bit harder (like having to deal with logical versus primary
partitions) to share the disk with other OS.
>> If FreeDOS was to define a GUID for itself, GRUB probing could in
>> the future detect a FreeDOS installation and add it to the menu.
>That would be a REALLY bad idea. There is currently a "standard" GUID
>associated with "Microsoft Basic Data", which covers pretty much everything MS
>has anything >to do with (the various FATs, including exFAT, NTFS, and
>others). That already covers everything FreeDOS would ever need. A new GUID
>would make things worse >instead of better. To figure out what kind of
>formatting is actually in the partition, you must look at the partition data
>itself -- what's in the GPT is not enough to tell you like >it is with MBR.
>For example, from the GPT alone you can't tell whether a partition is FAT12 or
>NTFS and FreeDOS can't boot from NTFS.
Adopting GUID of "Microsoft BASIC Data" probably means that boot loaders will
either show it as "Windows" or try to figure out by themselves which version of
Windows this is... it could take them a while to discover that this is not
really Windows, because you said it was "Windows" when it is not really.
I would have probably agreed if the standard would have a defined "MSDOS" GUID,
because really FreeDOS try to be almost identical to "MSDOS".
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