KOF 2002 Dreamcast_HDD IDE

[SWAT]

I checked and it's works on my HDD - https://youtu.be/K-kkBMdfz7s
CF or SD->CF adapter? I removed from IDE driver reading by CHS (it's very old method, but maybe adaper use it), now supports only LBA. But in any case CHS doesn't support DMA, only LBA reading mode can use DMA.
Try defragment HDD, highly fragmented files maybe a problem.
I has CF, but now I can't find power adapter cable, as I find it I'll check CF with WinCE.