<s>
Transaction-Safe	B-Application
FAT	I-Application
File	I-Application
System	I-Application
(	O
TFAT	O
)	O
and	O
Transaction-Safe	B-Application
Extended	I-Application
FAT	I-Application
File	I-Application
System	I-Application
(	O
TexFAT	O
)	O
refer	O
to	O
two	O
file	B-Application
systems	I-Application
used	O
in	O
Microsoft	O
products	O
to	O
provide	O
transaction-safety	O
for	O
data	O
stored	O
on	O
a	O
disk	O
.	O
</s>
<s>
The	O
latter	O
problem	O
has	O
become	O
more	O
common	O
with	O
the	O
spread	O
of	O
USB	B-Protocol
drives	O
.	O
</s>
<s>
The	O
Transaction-Safe	B-Application
FAT	I-Application
File	I-Application
System	I-Application
(	O
TFAT	O
)	O
of	O
the	O
TFAT12	O
,	O
TFAT16	O
and	O
TFAT32	O
file	B-Application
systems	I-Application
is	O
a	O
driver	O
layer	O
modification	O
to	O
the	O
original	O
FAT	B-Application
file	I-Application
systems	I-Application
FAT12	B-Application
,	O
FAT16	B-Application
and	O
FAT32	B-Application
maintaining	O
two	O
copies	O
(	O
FAT0	O
and	O
FAT1	O
)	O
of	O
the	O
file	B-Application
allocation	I-Application
table	I-Application
instead	O
of	O
two	O
identical	O
ones	O
.	O
</s>
<s>
When	O
the	O
operation	O
is	O
complete	O
,	O
the	O
FAT1	O
table	O
would	O
be	O
copied	O
to	O
FAT0	O
,	O
updating	O
the	O
stable	O
view	O
of	O
the	O
file	B-Application
system	I-Application
.	O
</s>
<s>
The	O
Transaction-Safe	B-Application
Extended	I-Application
FAT	I-Application
File	I-Application
System	I-Application
(	O
TexFAT	O
)	O
,	O
TexFAT	O
provides	O
similar	O
functionality	O
to	O
TFAT	O
using	O
the	O
exFAT	B-Application
file	I-Application
system	I-Application
as	O
the	O
base	O
file	B-Application
system	I-Application
instead	O
of	O
FAT	B-Application
.	O
</s>
<s>
Introduced	O
with	O
Windows	B-Operating_System
Embedded	I-Operating_System
CE	I-Operating_System
6.0	I-Operating_System
,	O
it	O
is	O
sometimes	O
referred	O
to	O
as	O
TFAT	O
as	O
well	O
,	O
which	O
can	O
lead	O
to	O
confusion	O
with	O
the	O
original	O
TFAT	O
described	O
above	O
.	O
</s>
<s>
The	O
use	O
of	O
exFAT	B-Application
as	O
the	O
underlying	O
file	B-Application
system	I-Application
allows	O
for	O
larger	O
files	O
and	O
larger	O
partitions	O
.	O
</s>
<s>
Due	O
to	O
the	O
lack	O
of	O
support	O
in	O
desktop	B-General_Concept
operating	I-General_Concept
systems	I-General_Concept
,	O
neither	O
TFAT	O
nor	O
TexFAT	O
are	O
recommended	O
for	O
removable	O
media	O
.	O
</s>
<s>
While	O
the	O
desktop	B-General_Concept
OS	I-General_Concept
could	O
still	O
read	O
the	O
drive	O
,	O
it	O
could	O
not	O
use	O
the	O
transaction-safe	O
features	O
,	O
so	O
unexpected	O
removal	O
or	O
a	O
power	O
outage	O
could	O
lead	O
to	O
data	O
loss	O
.	O
</s>
<s>
In	O
addition	O
,	O
directories	O
created	O
under	O
the	O
desktop	B-General_Concept
OS	I-General_Concept
may	O
not	O
be	O
transaction-safe	O
even	O
if	O
the	O
drive	O
is	O
later	O
attached	O
to	O
a	O
TFAT/TexFAT	O
aware	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
