partitions disappeared OS3.9 HELP!

[Thomas]

I  make new partitions and they never show up so I can format them.

Please make hardcopies of these three pages in HDToolbox with DH8 selected:

Partition Drive
Change...
Add/Update...

[Thomas]

As os OS 3.5 FFS does not have any limits any more.

But partitions above the 4GB border will only be mounted if both the file system and the HDD driver can deal with large hard drives.

In your case you probably need the entry for the GVP controller in Devs:NSDPatch.cfg as suggested by FaLLeNOnE.