<s>
In	O
computing	O
,	O
XCOPY	O
is	O
a	O
command	B-Application
used	O
on	O
IBM	B-Operating_System
PC	I-Operating_System
DOS	I-Operating_System
,	O
MS-DOS	B-Application
,	O
IBM	B-Application
OS/2	I-Application
,	O
Microsoft	B-Application
Windows	I-Application
,	O
FreeDOS	B-Application
,	O
ReactOS	B-Application
,	O
and	O
related	O
operating	O
systems	O
for	O
copying	O
multiple	O
files	B-Operating_System
or	O
entire	O
directory	B-Application
trees	I-Application
from	O
one	O
directory	B-Application
to	O
another	O
and	O
for	O
copying	O
files	B-Operating_System
across	O
a	O
network	B-Architecture
.	O
</s>
<s>
XCOPY	O
stands	O
for	O
extended	O
copy	B-Device
,	O
and	O
was	O
created	O
as	O
a	O
more	O
functional	O
file	O
copying	O
utility	O
than	O
the	O
copy	B-Device
command	B-Application
found	O
in	O
earlier	O
operating	O
systems	O
.	O
</s>
<s>
While	O
still	O
included	O
in	O
Windows	B-Operating_System
10	I-Operating_System
,	O
XCOPY	O
has	O
been	O
deprecated	B-General_Concept
in	O
favor	O
of	O
robocopy	O
,	O
a	O
more	O
powerful	O
copy	B-Device
tool	O
,	O
which	O
is	O
now	O
supplied	O
with	O
the	O
Microsoft	B-Application
Windows	I-Application
Server	B-Device
and	O
Desktop	O
operating	O
systems	O
.	O
</s>
<s>
DR	B-Application
DOS	I-Application
6.0	O
and	O
Datalight	O
ROM-DOS	B-Operating_System
include	O
an	O
implementation	O
of	O
the	O
command	B-Application
.	O
</s>
<s>
The	O
FreeDOS	B-Application
version	O
was	O
developed	O
by	O
Rene	O
Ableidinger	O
and	O
is	O
licensed	O
under	O
the	O
GPL	B-License
.	O
</s>
<s>
J	O
.	O
Edmeades	O
developed	O
the	O
Wine-compatible	O
version	O
that	O
is	O
included	O
in	O
ReactOS	B-Application
.	O
</s>
<s>
It	O
is	O
licensed	O
under	O
the	O
LGPL	B-Application
.	O
</s>
<s>
Since	O
Windows	B-Device
Server	I-Device
2019	I-Device
and	O
Windows	B-Operating_System
10	I-Operating_System
,	O
a	O
compression	O
option	O
is	O
available	O
in	O
xcopy	O
when	O
copying	O
across	O
a	O
network	B-Architecture
.	O
</s>
<s>
With	O
this	O
switch	O
,	O
if	O
the	O
destination	O
computer	O
supports	O
SMB	B-Operating_System
compression	O
and	O
the	O
files	B-Operating_System
being	O
copied	O
are	O
very	O
compressible	O
,	O
there	O
may	O
be	O
significant	O
improvements	O
to	O
performance	O
.	O
</s>
<s>
The	O
SMB	B-Operating_System
compression	O
adds	O
inline	O
whitespace	O
compression	O
to	O
file	O
transfers	O
.	O
</s>
<s>
Compression	O
is	O
also	O
available	O
with	O
the	O
robocopy	O
command	B-Application
and	O
Hyper-V	O
Live	O
Migration	O
with	O
SMB	B-Operating_System
.	O
</s>
<s>
Create	O
a	O
new	O
directory	B-Application
by	O
copying	O
all	O
contents	O
of	O
the	O
existing	O
directory	B-Application
,	O
including	O
any	O
files	B-Operating_System
or	O
subdirectories	B-Application
having	O
the	O
hidden	O
or	O
system	O
attributes	O
and	O
empty	O
directories	B-Application
.	O
</s>
<s>
Copy	B-Device
entire	O
drive	O
in	O
to	O
a	O
mapped	O
network	B-Architecture
drive	O
while	O
ignoring	O
any	O
errors	O
in	O
network	B-Architecture
restartable	O
mode	O
.	O
</s>
<s>
An	O
option	O
"	O
/J	O
"	O
copies	O
files	B-Operating_System
without	O
buffering	O
;	O
</s>
<s>
moving	O
very	O
large	O
files	B-Operating_System
without	O
the	O
option	O
(	O
available	O
only	O
after	O
Server	B-Device
2008R2	O
)	O
can	O
consume	O
all	O
available	O
RAM	O
on	O
a	O
system	O
.	O
</s>
<s>
XCOPY	O
will	O
not	O
copy	B-Device
open	O
files	B-Operating_System
.	O
</s>
<s>
XCOPY	O
does	O
not	O
support	O
the	O
Windows	B-Application
Volume	O
Shadow	O
Copy	B-Device
service	O
which	O
effectively	O
allows	O
processes	O
to	O
have	O
access	O
to	O
open	O
files	B-Operating_System
,	O
so	O
it	O
is	O
not	O
useful	O
for	O
backing	O
up	O
live	O
operating	O
system	O
volumes	O
.	O
</s>
<s>
XCOPY	B-Application
deployment	I-Application
or	O
xcopy	O
installation	O
is	O
a	O
software	O
application	O
's	O
installation	O
into	O
a	O
Microsoft	B-Application
Windows	I-Application
system	O
simply	O
by	O
copying	O
files	B-Operating_System
.	O
</s>
<s>
The	O
name	O
is	O
derived	O
from	O
the	O
XCOPY	O
command	B-Application
line	O
facility	O
provided	O
by	O
Microsoft	O
operating	O
systems	O
.	O
</s>
<s>
In	O
contrast	O
,	O
the	O
installation	O
of	O
a	O
typical	O
Windows	B-Application
application	O
will	O
require	O
a	O
significant	O
number	O
of	O
additional	O
steps	O
before	O
the	O
application	O
is	O
ready	O
to	O
be	O
used	O
.	O
</s>
<s>
Most	O
of	O
this	O
additional	O
work	O
involves	O
,	O
directly	O
or	O
indirectly	O
,	O
adding	O
or	O
modifying	O
entries	O
in	O
the	O
Windows	B-Protocol
Registry	I-Protocol
.	O
</s>
<s>
Even	O
when	O
an	O
application	O
uses	O
ordinary	O
files	B-Operating_System
for	O
its	O
own	O
data	O
,	O
many	O
common	O
facilities	O
provided	O
by	O
Windows	B-Application
require	O
some	O
type	O
of	O
registration	O
step	O
before	O
they	O
are	O
available	O
to	O
programs	O
.	O
</s>
<s>
Usually	O
,	O
one	O
or	O
more	O
specialized	O
tools	O
(	O
such	O
as	O
Windows	B-Application
Installer	I-Application
,	O
InnoSetup	B-Language
,	O
or	O
NSIS	B-Language
)	O
are	O
used	O
to	O
help	O
coordinate	O
these	O
relatively	O
complex	O
operations	O
.	O
</s>
