PS2 grimdoomer + OPL won't see the games

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Hi! I'm relatively new to the PS2 scene and need some help getting my ISO back working on a PS2 Fat.
I'm unsure what I did wrong, but it's driving me insane.

I'm using a 4TB SSD exFAT 512B with the latest grim doomer OPL and a MemCardPro 2 for FCMB.

I managed to get everything working and enabled the correct HDD settings like BDM Start Mode Auto (HDD ON), but for some inexplicable reason, OPL does not see any of my games (ISO) except maybe one time out of ten.

I decided to try with another smaller HDD, but it seems I've had no luck.
The HDD are seen; the games won't always appear. IF they appear, I can boot them. Formatted many times and used the correct CD/DVD folders.

I'm using 3 adapter:
• A random one no brand
• An official modded bitfunx
• Kaico one

What could the problem be? I don't think is the PS2 itself because the original HDD the console came with (PlayStation 2 BB Pack) works fine with the OG adapter.

Any ideas? I really don't know what else to do.
 
Can you also try to enable HDD Device Start Mode:
IMG_20250609_185138.jpg
 
What sector size is of that SSD?
What cluster size you using on exFAT partition?
Are you using GPT partition table or none?
Did you tried other OPLs with BDM HDD feature?
 
Berion said:
What sector size is of that SSD?
What cluster size you using on exFAT partition?
Are you using GPT partition table or none?
Did you tried other OPLs with BDM HDD feature?
Click to expand...

Sector size is 512B
Cluster I tried several but currently I'm on "default" (as suggested, but I tried 128KiB being over 1TB)
I'm using a GPT partition table.

I wasn't aware that OPLs had now exFAT support! I tried a bunch of build, but seems the HDD Block option is always missing, making the games never appear.

Maybe I should just give up and go 2TB APA…

Update: I found out about NHDDL for Neutrino. This never fails to see my SSD and the games, I think this rules out any hardware related problem?
 
Last edited by a moderator:
Issue is software oriented, not hardware, that's for sure.

32KiB is optimal for exFAT drivers on PS2. 128 is to large. While it is not reason why disk contents are not recognized, it have impact on playing games.

I'm asked about GPT because you can just not use any partition table which is also supported by BDM drivers, yet less tested because on Windows, by Windows build-in tools is not possible to make that, and as we know, it is dominating OS on this planet. Your case could be edge case then.

On newer OPL, exFAT on internal HDD is called "BDM HDD" (or in uOPL: "HDD GPT"). "HDD IDE"/"HDD APA" must be disabled to use exFAT on internal. Just FYI.
 
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