From mboxrd@z Thu Jan  1 00:00:00 1970
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Subject: Re: Subject: [PATCH RFC] block: fix Amiga RDB partition support for
 disks >= 2 TB
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Martin Steigerwald <martin@lichtvoll.de>, Jens Axboe <axboe@kernel.dk>,
 jdow <jdow@earthlink.net>, linux-m68k <linux-m68k@lists.linux-m68k.org>,
 linux-block@vger.kernel.org
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From: Michael Schmitz <schmitzmic@gmail.com>
Message-ID: <429b11a2-35e5-74b5-62f7-303436781c1b@gmail.com>
Date: Fri, 29 Jun 2018 21:25:01 +1200
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Hi Geert,

Am 29.06.18 um 21:12 schrieb Geert Uytterhoeven:
> Hi Michael,
>
> On Fri, Jun 29, 2018 at 11:08 AM Michael Schmitz <schmitzmic@gmail.com> 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 ;-)

For good reason. But that happened on a couple of instrument control PCs
I converted from Win2k. Never mount a scratch monkey... 

>>> 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.

OK, that decides it.

Cheers,

    Michael
> Gr{oetje,eeting}s,
>
>                         Geert
>