Usually people use those converters for the other direction (SATA drive and onboard IDE). Why not just get a PCI card IDE controller and use the drive natively?

These work fine for me for IDE optical drives on an AHCI SATAcontroller under Windows 10 x64 . https://www.startech.com/en-ca/hdd/pata2sata3

They use a Sunplus SPIF223A or at least mine do .

@jakethompson
Tried this already, but I did not find any PCI card IDE controller which seems not to be restricted to HDDs only.
Practically all were some sort of RAID controllers 🙁

@darry
Just ordered one .
I'll report back when I got it delivered, probably next week.

Thank you very much 😀 😀

I run IDE DVD on a Jmicron JMB36x based adapter. not sure of the model
Can't remember if I tried the replacement ROMs from https://blog.stuffedcow.net/2012/08/jmicron-j … card-ahci-mode/ = pretty sure this was with the standard ROM

Ah, NOW I remember - It's on it's own driver and works, I did try the replacement ROMs and got to having the IDE on standard IDE driver, the SATA on standard driver, but it lost the ability to plug & play on the ESATA

@Matth79
This is sort of crazy, a PCI-E card with PATA port.
IIrc the latest PATA disks were 300GB, a bit small in the PCI-E age 😀
Sadly this build is aimed specifically at DOS, so it needs to be BIOS compatible (as there are no PCI-E drivers for DOS).
And the guy reported in his blog that he was unable to make PATA work...

By the way, I found I am a real retard...
...I didn't realize that the Soundblaster has a PATA port for CD...
OMG 🤦

But if the adapter @darry suggested works, I guess I'll use that, as it will be much more compatible.