Boot & Die Testing Procedure

This checkoff list is aimed at isolating the reason a system will not boot and/or install CCI Concurrent DOS.

1. Prepare a bootable test floppy using format /b from \cdos. Format a floppy using FORMAT /B from the CDOS directory. Copy CCPM.ORG to the floppy from the \CDOS directory. Copy CCPM.ORG to CCPM.SYS on the floppy, also. This makes it easy to make a "clean" CCPM.SYS when performing the tests below. Copy FEATURE.EXE and CCIGEN.EXE from the CDOS directory to the floppy

   Use this floppy for all of the following tests, the "clean" OS must be restored after each test. The best way to restore the "clean" OS is by copying CCPM.ORG over CCPM.SYS. Start with critical boards only in the computer (floppy, vga /mono, and hard disk controller). Boot from the test floppy generated in the procedure above. If the system boots to the "A:>" prompt, add other boards one by one until the problem reappears. Once the offending board is determined, verify the board configuration settings and run any available diagnostics for that board. If the board still prevents the system from booting, contact Concurrent Controls Technical Support. If the system still doesn't boot, proceed to 2.

   Results:
   
   

2. Reduce conventional memory size. After booting to DOS, log into the A drive by typing "A:". Then type "CCIGEN /38" (reduce conventional memory size). Set the new value to 624, eXit, and save the settings in CCPM.

   Results:
   
   

3. Reduce extended memory size. After booting to DOS, log into the A drive by typing "A:". Then type "CCIGEN /37". Set the new value to 1024, eXit, and save the settings in CCPM.

   Results:
   
   

4. Don't relocate SYSDAT, no drivers enabled. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 13 1 CCPM".

   Results:
   
   

5. Change the vga display adapter to monochrome or monochrome to vga. Also consider changing VGA display adapter board types.

   Results:
   
   

6. Toggle Num Lock. Does the Num Lock light toggle on/off?

   Results:
   
   

7. Try switching sessions. Are you able to switch to a different session by hitting CTRL-Numeric Keypad-2?

   Results:
   
   

8. Try to change "suspicious" options in the BIOS setup options. For example, memory remap, enabling/disabling shadow, enabling/disabling the cache, etc. Also note if any option settings don't look right (disabled when you expect it to be enabled, etc.)

   Results:
   
   

9. Skip extended memory tests. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 24 1 CCPM".

   Results:
   
   

If you suspect the hard disk or hard disk controller:

1. Ignore the hard disk. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 19 40 CCPM".

   Results: (locks at the same place, booted to a: prompt, etc.)
   
   

2. Use single sector mode for the hard disk. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 13 4 CCPM".

   Results:
   
   

3. Disable the hard disk from BIOS setup and reboot. The diver sign-on message should show 0 hard disks.

   Results:
   
   

4. Do not perform disk subsystem reset during system init process. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 13 20 CCPM".

   Results:
   
   

5. Skip disk check for multi-master transfers. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 20 2 CCPM".

   Results:
   
   

6. Allocate INT13 stack into non-translated memory. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 24 4 CCPM".

   Results:
   
   

7. Do not hook INT4B. After booting to DOS, log into the A drive by typing "A:". Then type "FEATURE 24 8 CCPM".Results: