My friend has a old DOS application which is not supported anymore and require DOS (realtime real/v86 mode OS)
and he need run this sw several times per a year.
Virtual machine is not good option becouse this is somethink like Logic analyser (LPT time critical access is required)
I would like to create bootable ISO for him but I am not successfull.
My tools setup
ImDisk Virtual Disk Driver for Windows NT/2000/XP/2003. Version 1.5.3 - (Compiled Nov 12 2011) Grub4dos 0.4.4 windows binaries Oracle VirtualBox v4 (legal version) OS Windows 32bit SP3 (patched upto aprill/2014)
I made ISO image with UltraISO 9.5 and used grldr as bootloader (+generate boot catalog option enabled)
After booting image I have GRUB prompt but I cant load any kernel I see all files in my minimal iso
any attempt to set root or direct load memdisk or io.sys fail with error
What I am doing wrong I spent 2 days with this without any success.
I am old DOS user from DOS3 so commandline is my friend but so many changes are with booting
process last 20 years..... I feel like newbie now.
I would like create ISO image with MS-DOS/FreeDOS with aplication 20mb is required for it.
And seem to be harder as 20years ago! :-(
I tried make also large Floppy image in IMDISK with WinXP DOS7.0 but this image never boot
So I am verry flustrated and wan't to help to my friend and provide him single file ISO which he can burn on CD.
Edited by rebot, 09 November 2014 - 12:36 PM.