<s>
Many	O
IBM	O
PC	O
compatible	O
games	O
released	O
between	O
1981	O
and	O
about	O
1990	O
were	O
self-booting	O
and	O
did	O
not	O
use	O
MS-DOS	B-Application
,	O
IBM	B-Operating_System
PC	I-Operating_System
DOS	I-Operating_System
,	O
or	O
compatible	O
disk	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
The	O
phrase	O
"	O
IBM	O
PC	O
compatible	O
self-booting	O
disk	O
"	O
is	O
sometimes	O
shortened	O
to	O
"	O
PC	O
booter	O
"	O
.	O
</s>
<s>
Self-booting	O
disks	O
were	O
common	O
for	O
other	O
computers	O
as	O
well	O
.	O
</s>
<s>
These	O
games	O
were	O
distributed	O
on	O
"	O
or	O
,	O
later	O
,	O
"	O
,	O
floppy	B-Device
disks	I-Device
that	O
booted	B-Operating_System
directly	O
,	O
meaning	O
once	O
they	O
were	O
inserted	O
in	O
the	O
drive	O
and	O
the	O
computer	O
was	O
turned	O
on	O
,	O
a	O
minimal	O
,	O
custom	O
operating	B-General_Concept
system	I-General_Concept
on	O
the	O
diskette	B-Device
took	O
over	O
.	O
</s>
<s>
Due	O
to	O
bit	O
rot	O
,	O
original	O
working	O
versions	O
of	O
these	O
floppy	B-Device
disks	I-Device
are	O
rare	O
,	O
and	O
many	O
have	O
largely	O
been	O
abandoned	O
by	O
their	O
publishers	O
.	O
</s>
<s>
Some	O
have	O
been	O
ported	O
to	O
other	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
