I have two SSD hard disk inside my PowerMac G5 and I have problems with the second SSD and the recover program doesn't work, I have formated this hard disk and I did 2 and three partitions but MorphOS doesn't recognize these and now neither the hard disk, How many partitions does MorphOS recognize? because I'll like add other two, beause the main hard disk has two more the boot img,
but neither I want have problems, although I trying to recover the second hard disk because I think that it is dammaged trying to create the partitions.
Thanks.

I suppose, that it depends on disk partition map not OS.

On Powermac you have probably APM? ( under MorphOS you see it like "MAC" )
In any case, APM and Amiga RDB supports really big number of partitions.

APM
RDB

Here is probably no limitation from MorphOS, but I am no 100% sure. In any case, I am using under MorphOS many partitions, I write exact number where I will be at home.

I have 7 partitions on my Mac mini and 10 partitions on Pegasos 1, but these are on one disk on each setup. I don't think amount of partitions should cause problems in any case...

G5 Quad: HDD1: APM, 8 partitions, HDD2: APM, 4 partitions
Pegasos 2: HDD1: RDB, 6 partitions, HDD2: RDB, 8 partitons, HDD3: RDB, 1 partition

Well, the problem with partitions is with two SSD hard disk, I think that problem is because these disk haven't the pin selector of Master/Slave as the mechanical hard disk.

Powermac G5 have two SATA I connectors. You not need any master/slave select, it is PATA behavior.
There will be something other.

What is your partition map? And do you use linux or MacOS X on this Powermac? I recommend not to mix hdtools from different systems, it often causes partition mismatch.

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I use the PowerMac only with MorphOS for Linux I have a Gigabyte brick.

Partitions must not have the same name or logical name too.
Here, I give a logical name specific for each machine ("PEG1:" "PMAC1:" "PBOOK1:" etc.), and I name partitions with a similar schema ("SysPeg2:", "SysPMac:", etc.) and, therefore, I avoid conflicts ^^

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in this case I don't know.

You can arrange serial debug via firewire, if you have another Powermac or Pegasos.
Or you can boot from installation CD/USB, connect only one disk, check everything ( include different names like BattleMan mentioned ). Than do the same for second disk.

Other curious thing happened I connected the mechanical hard disk with NFTS partition format but with MorphOS was impossible change the format to SFS, MorphOS worked with it but with some programs I had problems for example with IBrowse with errors in sectors disk when loaded its tolbar graphics, now again I connected the SSD hard disk but with a only partition although the MorphOS program called DH0: too. I hae two hard disks with DH0:

> I connected the mechanical hard disk with NFTS partition format
> but with MorphOS was impossible change the format to SFS

That's because the HDD has been formatted using MBR or GPT partition layout, but SFS requires RDB or MAC/APM. If you change to one of those, SFS should be selectable.

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=9599&forum=3&start=3