Hi, as fdshield could conceivably freeze DOS,
I replaced all "retf +2" commands in fdshield
by less "invasive" code. This means that the
updated fdshield no longer messes for example
with the interrupt enabled / disabled state
of the caller. The update should make fdshield
generally more well-behaved. Note that nobody
did yet report that fdshield froze his apps.
Still an update should not hurt... :-).

Get the updated fdshield at:


Enjoy :-). The binary is 4kB small...

Cheers, Eric

PS: If you do not know what fdshield is, read this help screen...

Syntax: FDSHIELD [/?] [/v]  [/x] [/X]  [/b] [/B]  [/t] [/T]  [/w] [/W]
   /v  show verbose warnings     /?  show help, do not start shield
   /x  protect exe/sys/com       /X  protect exe/sys/com/bat more
       Warning: There is no LongFileName access file protection yet
   /b  floppy boot protect       /B  harddisk/ramdisk boot protect
       Do not try to FORMAT drives with protected boot sectors
   /t  block TSRs and devices    /T  block CWSDPMI and RTM, enable /t
       Use /T in DOS boxes or load your DOS extender as TSR first
       TSR block *halts* the PC when a TSR or device gets loaded
   /w  floppy write protect      /W  harddisk/ramdisk write protect
       Activating /w and /W together simulates all files readonly
       Writes to write-protected fixed/RAM-disks can *hang* DOS
       You cannot use '|' pipes without writeable TEMP directory
       Do not start delayed-write caches while /w or /W is on
Note: Sabotage check and raw harddisk format block are always on

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