DOS ain't dead - DOS on Compaq EVO T20 thin client

DOS on Compaq EVO T20 thin client - possible? (Developers)

posted by RayeR , CZ, 11.11.2008, 16:58

I found a way how to overcome problem with accessing disk image in BOCHS. When I temporarly switch partition type from 04 to 0Eh I can access entire image. But it doesn't work on T-20 because BIOS probably doesn't support LBA INT 13h BIOS extension. Here's my bochsrc.txt for image posted above and error log when hanged accessing sector >969

I did some further experiemnts:
1) I used GRUB4DOS 0.4.4 to boot directly freedos kernel.sys
- failed on init disk phase
[image]
2) I used GRUB4DOS 0.4.4 to load 1,44M FD image with freedos
- failed due to missing INT 15h BIOS service
[image]
3) I used GRUB4DOS 0.4.4 to load memdisk (syslinux 3.72) and
then load 1,44M FD image
- failed with some strange error
[image]
I also tried HDD image harddisk=0 c=150 h=4 s=17 (tested
in bochs) and memdisk loaded it but didn't run, ended
with "loading boots ector... booting..."

I used this hellchain: NTBootSector->NTLDR->GRLDR->MEMDISK->kernel|image

Maybe the only way will be compile own FD kernel with HDD geometry hardcoded...

---
DOS gives me freedom to unlimited HW access.

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Complete thread:

DOS on Compaq EVO T20 thin client - possible? - RayeR, 08.11.2008, 17:48 (Developers)
- DOS on Compaq EVO T20 thin client - possible? - mht, 08.11.2008, 18:32
  - DOS on Compaq EVO T20 thin client - possible? - RayeR, 09.11.2008, 00:37
    - DOS on Compaq EVO T20 thin client - possible? - RayeR, 09.11.2008, 13:09
      - DOS on Compaq EVO T20 thin client - possible? - mht, 09.11.2008, 14:36
        DOS on Compaq EVO T20 thin client - possible? - RayeR, 09.11.2008, 16:36
        DOS on Compaq EVO T20 thin client - possible? - marcov, 11.11.2008, 09:31
        DOS on Compaq EVO T20 thin client - possible? - RayeR, 11.11.2008, 16:58
        DOS on Compaq EVO T20 thin client - possible? - rr, 11.11.2008, 20:31
        DOS on Compaq EVO T20 thin client - possible? - Rugxulo, 11.11.2008, 20:48
        DOS on Compaq EVO T20 thin client - possible? - RayeR, 11.11.2008, 21:18
        DOS on Compaq EVO T20 thin client - possible? - rr, 11.11.2008, 21:40
        DOS on Compaq EVO T20 thin client - possible? - Rugxulo, 12.11.2008, 00:24
        DOS on Compaq EVO T20 thin client - possible? - mht, 12.11.2008, 17:44
        DOS on Compaq EVO T20 thin client - possible? - RayeR, 14.11.2008, 22:10
        DOS on Compaq EVO T20 thin client - possible? - mht, 17.11.2008, 09:45
        DOS on Compaq EVO T20 thin client - possible? - RayeR, 24.11.2008, 23:28
        Yes, dynamic CHS! - RayeR, 29.11.2008, 22:20
        Yes, dynamic CHS! - ecm, 30.11.2008, 12:49
        Yes, dynamic CHS! - RayeR, 30.11.2008, 18:13
        Yes, dynamic CHS! - ecm, 30.11.2008, 20:34
        Yes, dynamic CHS! - RayeR, 30.11.2008, 22:34
        Yes, dynamic CHS! - tom, 02.12.2008, 13:34
        Yes, dynamic CHS! - RayeR, 02.12.2008, 17:14
        DOS demo show on T20! - RayeR, 03.12.2008, 04:21
        DOS demo show on T20! - Rugxulo, 06.12.2008, 12:13
        DOS demo show on T20! - RayeR, 07.12.2008, 13:34
        DOS demo show on T20! - rr, 07.12.2008, 16:56
        DOS demo show on T20! - mht, 08.12.2008, 20:31
        DOS demo show on T20! - RayeR, 08.12.2008, 21:06
        DOS demo show on T20! - mht, 08.12.2008, 21:28
        DOS demo show on T20! - RayeR, 09.12.2008, 11:55