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the O
drive O
from O
which O
the O
system O
was O
booted O
. O
The O
filename O
is O
also O
used O
by O
( O
DCP O
) O
, O
an O
MS-DOS O
derivative O
by O
the O
former O
East-German O
VEB O
Robotron O
. O
Some O
versions O
of O
DOS B-Device
will O
probe O
for O
alternative O
filenames O
taking O
precedence O
over O
the O
default O
CONFIG.SYS O
filename O
if O
they O
exist O
: O
While O
older O
versions O
of O
Concurrent B-Operating_System
DOS I-Operating_System
3.2 O
to O
4.1 O
did O
not O
support O
CONFIG.SYS O
files O
at O
all O
, O
later O
versions O
of O
Concurrent B-Operating_System
DOS I-Operating_System
386 I-Operating_System
and O
Concurrent B-Operating_System
DOS I-Operating_System
XM I-Operating_System
, O
as O
well O
as O
Multiuser B-Operating_System
DOS I-Operating_System
, O
System O
Manager O
and O
REAL/32 B-Operating_System
will O
probe O
for O
CCONFIG.SYS O
( O
with O
" O
C O
" O
derived O
from O
" O
Concurrent O