Critical compatibility fixes - DOS 6.22 does not support many Windows
batch file features. Removed all incompatible commands and replaced
with DOS 6.22 compatible alternatives.
Issues Fixed:
1. DEPLOY.BAT - Removed SET /P (interactive input)
- Changed from: SET /P MACHINE=Machine name:
- Changed to: SET MACHINE=%1 (command-line parameter)
- Usage: DEPLOY.BAT TS-4R
- DOS 6.22 does not support SET /P
2. CHECKUPD.BAT - Removed SET /A (arithmetic) and GOTO :EOF
- Removed 6 instances of SET /A counter arithmetic
- Replaced numeric counters with flag variables
- Changed from: SET /A COMMON=COMMON+1
- Changed to: SET COMMON=FOUND
- Replaced GOTO :EOF with actual labels
- Changed display from counts to status messages
3. STAGE.BAT - Removed FOR /F (file parsing)
- Changed from: FOR /F "skip=1 delims=" %%L IN (...) DO
- Changed to: TYPE C:\AUTOEXEC.BAT >> C:\AUTOEXEC.TMP
- DOS 6.22 only supports simple FOR loops
Created check-dos-compatibility.ps1:
- Automated scanner for DOS 6.22 incompatible commands
- Checks for: SET /P, SET /A, IF /I, FOR /F, FOR /L, FOR /R,
GOTO :EOF, %COMPUTERNAME%, &&, ||, START, invalid NUL usage
- Scans all BAT files and reports line numbers
- Essential for preventing future compatibility issues
Verification:
- All files maintain CRLF line terminators
- All commands tested for DOS 6.22 compatibility
- No SET /A, SET /P, FOR /F, GOTO :EOF remaining
- CHOICE commands retained (CHOICE.COM exists in DOS 6.22)
Impact:
- DEPLOY.BAT now requires parameter: DEPLOY.BAT TS-4R
- CHECKUPD.BAT shows "Updates available" vs exact counts
- STAGE.BAT copies all AUTOEXEC lines (duplicate @ECHO OFF harmless)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
