Quote Originally Posted by neosunrise View Post
This looks similar to my HP Portable Vectra CS. The hdd is pretty much the same as mine, which is a pain in the rear. My has a stuck head and it is basically impossible to find a replacement.
I did a bit of googling and found a guy that has a few blog posts about reverse engineering the connector. Turns out its a modified ST-506 protocol to better fit laptop use.

https://knm.org.uk/blog/2017/04/the-...erface-part-1/
https://knm.org.uk/blog/2017/05/v86p-expansion/
https://knm.org.uk/blog/2018/09/the-...erface-part-3/

And this place makes a "we do everything" board which has support for the weird 26 pin JVC controller.
https://www.drem.info/technical-specs

It's not cheap though..

The guy also mentioned the connector that the disk controller plugs into is a slightly modified 8 bit ISA bus, so it may be possible to make a custom ISA board to have XT-IDE support.