Hello Jasen!
Quoting Jasen's message:
 RB>>    C:\4DOS @C:\4DOS\4DOS.INI /F /D /K C:\4DOSEXEC.BTM /D /K AUTOEXEC
 JB> ah!, that looks right, DOS is loading 4dos in secondary shell mode
 JB> (not primary shell mode like a regular boot) DOS adds the /D /K AUTOEXEC
 JB> to make the shell start like a primary shell should although it's really
 JB> a secondary (EXIT-able) shell.
Nope, it is not possible from 4DOS to exit to COMMAND.COM - in facts, I 
looked at what is loaded in memory and I cannot find any trace of 
COMMAND.COM. Here is what I find (doing MEM /C):
                    Total          Conventional         Upper Memory
               --------------     --------------       --------------
    SYSTEM      40,752  (40K)       9,696   (9K)        31,056  (30K)
    HIMEM        1,168   (1K)       1,168   (1K)             0   (0K)
    EMM386       4,320   (4K)       4,320   (4K)             0   (0K)
    4DOS         8,128   (8K)         432   (0K)         7,696   (8K)
    UNDELETE    13,616  (13K)      13,616  (13K)             0   (0K)
    XMSDSK         528   (1K)           0   (0K)           528   (1K)
    CLOCK          432   (1K)           0   (0K)           432   (1K)
    SBIDE       14,432  (14K)           0   (0K)        14,432  (14K)
    IFSHLP       2,864   (2K)           0   (0K)         2,864   (3K)
    MOUSE       14,768  (14K)           0   (0K)        14,768  (14K)
    SETVER         832   (1K)           0   (0K)           832   (1K)
    BLANK-IT       880   (1K)           0   (0K)           880   (1K)
    ANSI         2,672   (3K)           0   (0K)         2,672   (3K)
    MSCDEX      32,528  (32K)           0   (0K)        32,528  (32K)
    Free       723,056 (706K)     624,320 (610K)        98,736  (96K)
As you can see from the above, COMMAND.COM is not in memory.
And if I type "EXIT" nothing happens - I am not returned to a MS-DOS prompt.
 JB> What does the /D switch do? (nothing here)
I just used it because it was being used by MS-DOS v7.0 when I tested booting 
my system without neither CONFIG.SYS and AUTOEXEC.BAT
Go figure...
Sincerely, Raymond Beriau.
           Co-Moderator 4DOS
INFODATA Communications [+1 514 432 8467]
... A mind is like a parachute.  It only works when it's open.
--- GoldED 3.00.Beta3+
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