Hi Manuel,

On 10/19/24 9:31 AM, Manuel Molina Cuberos wrote:
> ...
> 
> I managed to partition the disk from OS 9 in order to be able to install
> it, and left the third partition (before the empty space), as a 128
> MByte HFS one with  "Apple HFS" type.
> 
> Which tool can I use from OS 9 (or even OS X) to change the partition
> type to "Apple_Bootstrap" ?
> I'm curious about how you did that. I tried with pdisk but it won't let
> me write the changes:
> ...
Any of these will work (and there are likely other ways as well):

1) Boot Mac OS X Tiger from a different disk, then use pdisk to
partition your internal disk.

2) Hold down "T" while booting your iMac, then connect it to a different
Mac that has Firewire and use pdisk from Mac OS X on that Mac to change
the internal disk on your iMac.

3) From Mac OS 9, run NetBSD's pdisk. I had to use the mac68k version so
it would see internal ATA disks (the ppc version only sees SCSI disks);
pdisk is available here:

https://cdn.netbsd.org/pub/NetBSD/NetBSD-10.0/mac68k/installation/misc/pdisk.sea.hqx

In Mac OS 9, pdisk (somewhat unsafely) lets you change (or rename)
partitions even if they're active. That can come in handy if you can't
boot from a different disk.

hope that helps

-Stan

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