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- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] Partition/GEMDOS drive ID assignment question
- From: Eero Tamminen <oak@xxxxxxxxxxxxxx>
- Date: Thu, 28 Aug 2025 12:02:01 +0300
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Hi Uwe,
On 27.8.2025 11.38, Uwe Seimet wrote:
I have a question regarding the "Add GEMDOS HD after ACSI/SCSI/IDE
partitions" option. It is not working for me as expected, and I don't see
why. This is what the Hatari manual says:
GEMDOS HD emulation can override partition(s) from HD images. With "Add GEMDOS HD after ACSI/SCSI/IDE partitions" option Hatari tries to assign it to a drive after the partitions on HD images, instead of C: (whether that works correctly depends on whether your emulated Atari hard disk interprets the HD images partition tables similarly to Hatari, and whether it starts assigning them from C: onwards).
Naturally this option has no impact when user overrides it by explicitly
specifying the desired GEMDOS HD partition(s). That's whole the point
of overrides.
Hatari provides 2 methods for doing that:
* Single drive "--gemdos-drive" CLI option, and
* providing Hatari with a directory containing only single letter (drive
/ partition) subdirectories.
[...]
With the option enabled it reports the same:
INFO : GEMDOS HDD emulation, C: <-> /home/us/TT/C.
WARN : GEMDOS HD drive C: (may) override ACSI/SCSI/IDE image partitions!
INFO : GEMDOS HDD emulation, D: <-> /home/us/TT/D.
WARN : GEMDOS HD drive D: (may) override ACSI/SCSI/IDE image partitions!
INFO : GEMDOS HDD emulation, E: <-> /home/us/TT/E.
INFO : GEMDOS HDD emulation, F: <-> /home/us/TT/F.
INFO : GEMDOS HDD emulation, G: <-> /home/us/TT/G.
INFO : GEMDOS HDD emulation, H: <-> /home/us/TT/H.
INFO : GEMDOS HDD emulation, I: <-> /home/us/TT/I.
Any idea what's happening here?
As can be seen from the above output, your Hatari config uses the 2nd
method [2] for explicitly specifying the GEMDOS HD drive letters.
(Hatari even warns about the selected GEMDOS HD drive letters
overlapping with image partitions.)
- Eero
[2] documented here:
https://www.hatari-emu.org/doc/manual.html#GEMDOS_based_hard_drive_emulation