iosys wrote on 2023-08-15, 09:31:

Hi, […]
Show full quote

Hi,

I bought this PC long ago, and after getting an EGA to HDMI converter working with it, I want to verifiy if it works.
The PC is booting but I cannot get to manage going to BIOS.
I think there might be a software to get into.
I tried the maximum keyboard combination keys but no avail.

It can boots up on DOS 5.5 or DOS 3.3 on floppy drive, but Hard drive doesn t seem to show up (but HDD - miniscribe 20MB- is spinning and seeking).

Strange behavior : when I push keys before it counts RAM, I get a Keyboard error.

Can you help me searching for software for bios setup ? Or maybe I am missing something else...

Welcome to Vogons 😀

If you check one of his other videos you'll see he stumbled across the keyboard combo when trying to fix his own miniscribe hdd...

https://youtu.be/i1S8C-lEAz4?t=1089

If that doesn't help, maybe try the generic GSETUP bios app

Ayyy thank you.
CTRL-ALT-ESC working like a charm.

All I can set is 7 options :
1 Date
2 Time
3 Floppy 1 type
4 Floppy 2 type
5 Fixed disk 1 type
6 Fixed disk 2 type
7 Screen type

I set up fixed disk 1 to type 2 (615 cyl 4h 17 sites prec 65535) (20 MB MFM HDD)
On motherboard I set switch ON for 'Fixed disk controler present' .

But computer now show message 'Equipment error please enter BIOS or F1 to continue'

So it is only booting to floppy with a DOS 6.22.

It seems it is a fixed disk or disk controler issue.
I have no other MFM disk for testing furthermore 🙁