Hi Michael,
On Fri, Jun 29, 2018 at 11:08 AM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
Am 29.06.18 um 20:51 schrieb Geert Uytterhoeven:
Would MSDOS recognize the GPT partition as 'probably FAT', and attempt
to use it?
No idea...
Probably some old Windows or MacOS versions will just suggest to
format your "new" disk ;-)
Yep, that's what I'd expect. Windows even used to trash the LILO boot
code in the MBR if you just happened to boot to it by accident. Did we
complain?
Those days Linux users just knew not to use Windows ;-)
But it's up to the person (which is not Linux) formatting the disk to
not try to use
it on systems that cannot handle it, and may destroy it.
Let me clarify: what exactly would the kernel option allow? When to use it?
Whether to use it if safe (on Linux). But whatever Linux does (after
this patch), access will go to the right area of the disk (as specified
by the RDB) so Linux won't any longer stomp on anything that would have
mattered to 32 bit disk drivers. So it really should be safe.
Personally, I see no reason to depend on a kernel option, if it is safe to use.
Just use it.
So to recap - someone partitions a disk on AmigaOS 4.x, taking advantage
of the large block device support there.
Using that disk on AmigaOS 3.1, data loss ensues. Whether or not Linux
(patched) ever touched the disk has no impact on that outcome.
Right?
That's my understanding, too.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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