4 Jan
2005
4 Jan
'05
9:45 a.m.
The switch is /B
but DOS will NOT ALLOW /B if the source is a device. If you wade through
the ASCII text messages within COMMAND.COM, you'll find that there is
a specific error message for that!
I had previously given some wrong information (so,... what's new?)
You CAN do /B copies TO a device (I shoulda remembered; I used to have to
do that to load certain fonts into laserjets)
But you cannot, without appropriate additional software, do /B copies
FROM a device.
In the case of DOS 6.22, the message "Cannot do binary reads from a
device"
is at offset 970F in COMMAND.COM
9700 43 C
9710 61 6E 6E 6F 74 20 64 6F-20 62 69 6E 61 72 79 20 annot do binary
9720 72 65 61 64 73 20 66 72-6F 6D 20 61 20 64 65 76 reads from a dev
9730 69 63 65 0D 0A 0D 42 52-45 41 4B 20 69 73 20 25 ice...