Creating a Refdisk and/or Diagnostics Disk
Download the file (rf*.exe for refdisk, rd*.exe for diags) onto your hard disk. Put a blank, formatted 1.44MB floppy (caution, some options or early refdisks use 720KB disks) into A:, run the executable. Follow the instructions...
Self-Extractor Screen Messages
Self-extracting diskette image processor (OS/2), Version 1.03...
Please enter a drive letter compatible with a 1.44M 3.5" disk,
NOTE: At this time, enter "a" for your A drive, or "b" if you have a 1.44MB B drive)
Press ENTER to continue (read license agreement)
NOTE: This screen pops up:
IBM PERSONAL SYSTEM/2 REFERENCE/OPTION DISKETTE...
NOTE: Bottom line says:
NOTE: Watch for this line! It will dump you out if you only hit enter.
If you agree, type Y and press ENTER...
Insert a blank high-density diskette in drive A:.
Press "Y" to do another copy:
Note: Just hit enter to end this
Under Win NT/9x
I have created MANY ref/diags disks with W95/NT 4.0 using Windows Exploiter/NT Exploiter, and NONE of them refused to work. Just double click on the file, and the DOS window pops up. Do NOT do a "DIR" under MS-Doze mode! If you want to surf through the new refisk, close the MS-Dos window and return to Exploiter.
Disk Utility for TG0 Files
Disk Utility for DSK Files
Could I Damage
My System with the Wrong Refdisk?
Copying Option ADFs
to the Refdisk CORRECTLY
Diagnostics from Refdisk
>Time for wild speculation and downright baseless opinions. Which version of IBM PC Dos would work best with the 1990 vintage SC.EXE?
Run SC.EXE from HD?
Common Refdisk Files
BACKUP EXE Backs up reference and diagnostics disk, or does it back up the CMOS contents to floppy?
DIAGS COM The big enchilada that calls up the *.dgs files and runs diagnostics.
KP COM Keyboard password utility (KP.COM) locks the keyboard temporarily without turning the system off.
LLFORMAT COM Called up by DIAGS.COM (?)
PASSWORD COM Power-On Password application?
POSTERR COM Brings up a simple message in case of a POST error...
RECV35 COM (Thanks, David Beem!)A parallel port Interlink (before there was such a thing). IBM sold an option of a dongle that was attached to the DB-25 PS/2 parallel port & had a Centronics 36-pin connection on the other side. The option included a diskette with the file send.com for running on the other system with the printer cable to connect to the dongle. On the PS/2 you could map the others' drives to copy files (It was marketed as a way to transfer files from the older 5-1/4 format to the new 3.5 format used on the PS/2.). Look at the Data Migration Facility
SETCLOCK COM Sets the date/time. Runs from command line.
SETRATE COM Sets typematic rate for KB. Runs from command line.
SC EXE The big enchilada for setting configuration. Will run and configure from command line in a pure DOS (M$ or PC) environment.
UPDATE EXE Updates BIOS in CMOS? Or does it update CMOS info on floppy?
DSPREVL EXE "Display Release Level" (?) where it shows BIOS and ref/diags levels.
IBMCACHE COM Disk cache? For Autoexec.bat?
IBMCACHE SYS Disk cache? For Config.sys?
INSTALL COM I think this is "User Install" where you can install utilities like KP.COM and PASSWORD.COM.
DASDDRVR SYS (Thanks, David Beem!) This is the "Direct-Access Storage Device Driver" collection of software patches to fix ROM BIOS bugs for the early models of pre-IML PS/2s. Only the PS/2-minimum DOS 3.3 and later versions need this driver; OS/2 has the same patches built-in. I don't think the system files in Windows 95 have the patches (and some of the Models fixed by the patches are a 286 or lower; Win95 COMMAND.COM wants a 386 or better.). The patches are system-specific & fix known issues. The driver just overlays the selected areas of affected BIOS, so it uses no more memory.
INSTDBUF COM Install Double Buffer?