<s>
The	O
SuperDisk	B-Device
LS-120	B-Device
is	O
a	O
high-speed	O
,	O
high-capacity	O
alternative	O
to	O
the	O
90mm	O
(	O
3.5in	O
)	O
,	O
1.44MB	O
floppy	B-Device
disk	I-Device
.	O
</s>
<s>
The	O
SuperDisk	B-Device
hardware	O
was	O
created	O
by	O
3M	O
's	O
storage	O
products	O
group	O
Imation	O
in	O
1997	O
,	O
with	O
manufacturing	O
chiefly	O
by	O
Matsushita	O
.	O
</s>
<s>
The	O
SuperDisk	B-Device
had	O
little	O
success	O
in	O
North	O
America	O
;	O
with	O
Compaq	O
,	O
Gateway	O
and	O
Dell	O
being	O
three	O
of	O
only	O
a	O
few	O
OEMs	O
who	O
supported	O
it	O
.	O
</s>
<s>
It	O
was	O
more	O
successful	O
in	O
Asia	O
and	O
Australia	O
,	O
where	O
the	O
second-generation	O
SuperDisk	B-Device
LS-240	I-Device
drive	O
and	O
disk	O
was	O
released	O
.	O
</s>
<s>
SuperDisk	B-Device
worldwide	O
ceased	O
manufacturing	O
in	O
2003	O
.	O
</s>
<s>
The	O
design	O
of	O
the	O
SuperDisk	B-Device
system	O
came	O
from	O
an	O
early	O
1990s	O
project	O
at	O
Iomega	O
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
last	O
examples	O
of	O
floptical	B-Device
technology	O
,	O
where	O
lasers	O
are	O
used	O
to	O
guide	O
a	O
magnetic	O
head	O
which	O
is	O
much	O
smaller	O
than	O
those	O
used	O
in	O
traditional	O
floppy	B-Device
disk	I-Device
drives	I-Device
.	O
</s>
<s>
Iomega	O
orphaned	O
the	O
project	O
around	O
the	O
time	O
they	O
decided	O
to	O
release	O
the	O
Zip	B-Operating_System
drive	I-Operating_System
in	O
1994	O
.	O
</s>
<s>
The	O
idea	O
eventually	O
ended	O
up	O
at	O
3M	O
,	O
where	O
the	O
concept	O
was	O
refined	O
and	O
the	O
design	O
was	O
licensed	O
to	O
established	O
floppy	B-Device
drive	I-Device
makers	O
Matsushita	O
and	O
Mitsubishi	O
.	O
</s>
<s>
Other	O
companies	O
involved	O
in	O
the	O
development	O
of	O
SuperDisk	B-Device
include	O
Compaq	O
and	O
OR	O
Technology	O
.	O
</s>
<s>
Matsushita	O
continued	O
development	O
of	O
the	O
technology	O
and	O
released	O
the	O
LS-240	B-Device
.	O
</s>
<s>
It	O
has	O
double	O
the	O
capacity	O
of	O
the	O
LS-120	B-Device
and	O
the	O
added	O
feature	O
of	O
being	O
able	O
to	O
format	O
regular	O
floppy	B-Device
disks	I-Device
to	O
32	O
MB	O
capacity	O
.	O
</s>
<s>
A	O
SuperDisk	B-Device
drive	I-Device
was	O
used	O
in	O
two	O
Panasonic	O
digital	B-Device
cameras	I-Device
,	O
the	O
PV-SD4090	O
and	O
PV-SD5000	O
,	O
which	O
allowed	O
them	O
to	O
use	O
both	O
SuperDisk	B-Device
(	O
LS120	B-Device
)	O
and	O
3.5	B-Device
"	I-Device
floppy	I-Device
disks	I-Device
as	O
the	O
memory	B-Device
media	I-Device
.	O
</s>
<s>
The	O
SuperDisk	B-Device
's	O
format	O
was	O
designed	O
to	O
supersede	O
the	O
floppy	B-Device
disk	I-Device
with	O
its	O
higher-capacity	O
media	O
that	O
imitated	O
the	O
ubiquitous	O
format	O
with	O
its	O
own	O
120MB	O
(	O
and	O
later	O
240MB	O
)	O
disk	O
storage	O
while	O
the	O
SuperDisk	B-Device
drive	I-Device
itself	O
was	O
backwards	O
compatible	O
with	O
1.44MB	O
and	O
720KB	O
floppy	B-Device
formats	O
(	O
MFM	B-Protocol
)	O
.	O
</s>
<s>
Superdisk	B-Device
drives	I-Device
read	O
and	O
write	O
faster	O
to	O
these	O
sorts	O
of	O
disks	O
than	O
conventional	O
1.44MB	O
or	O
720KB	O
floppy	B-Device
drives	I-Device
.	O
</s>
<s>
The	O
newer	O
LS-240	B-Device
drives	O
also	O
have	O
the	O
ability	O
to	O
read	O
and	O
write	O
regular	O
1.44MB	O
floppies	B-Device
at	O
much	O
higher	O
densities	O
.	O
</s>
<s>
The	O
true	O
capacity	O
of	O
these	O
"	O
SD120MB	O
"	O
drives	O
is	O
120.375	O
MiB	O
aka	O
126.22MB	O
(	O
FAT16B	B-Application
with	O
logical	O
geometry	O
963/8/32	O
CHS	B-Device
×	O
512	O
bytes	O
)	O
.	O
</s>
<s>
The	O
"	O
SD240MB	O
"	O
drives	O
have	O
a	O
capacity	O
of	O
229.25MiB	O
aka	O
240.39MB	O
(	O
FAT16B	B-Application
with	O
logical	O
geometry	O
262/32/56	O
CHS	B-Device
×	O
512	O
bytes	O
)	O
.	O
</s>
<s>
1.44MB	O
HD	O
floppies	B-Device
formatted	O
to	O
32MB	O
as	O
"	O
FD32MB	O
"	O
(	O
FAT16B	B-Application
with	O
logical	O
geometry	O
1024/2/32	O
CHS	B-Device
×	O
512	O
bytes	O
)	O
in	O
the	O
LS-240	B-Device
show	O
a	O
dummy	O
FAT12	B-Application
file	O
system	O
(	O
with	O
logical	O
geometries	O
160/2/9	O
or	O
80/2/18	O
)	O
when	O
inserted	O
into	O
a	O
normal	O
floppy	B-Device
drive	I-Device
.	O
</s>
<s>
SuperDisk	B-Device
drives	I-Device
have	O
been	O
sold	O
in	O
parallel	B-Device
port	I-Device
,	O
USB	B-Protocol
,	O
ATAPI	B-Protocol
and	O
SCSI	O
variants	O
.	O
</s>
<s>
All	O
drives	O
can	O
read	O
and	O
write	O
1.44MB	O
and	O
720KiB	O
MFM	B-Protocol
floppies	B-Device
,	O
as	O
used	O
on	O
PCs	O
,	O
Apple	B-Device
Macintoshes	I-Device
(	O
High	O
Density	O
format	O
only	O
,	O
see	O
below	O
)	O
,	O
and	O
many	O
workstations	B-Device
.	O
</s>
<s>
2.88MB	O
floppy	B-Device
formats	O
are	O
not	O
supported	O
.	O
</s>
<s>
Imation	O
also	O
released	O
a	O
version	O
of	O
the	O
SuperDisk	B-Device
with	O
"	O
Secured	O
Encryption	O
Technology	O
"	O
,	O
which	O
uses	O
Blowfish	B-Algorithm
with	O
a	O
64-bit	O
key	O
to	O
encrypt	O
the	O
contents	O
.	O
</s>
<s>
Macintosh	B-Device
users	O
found	O
trouble	O
making	O
SuperDisk	B-Device
drives	I-Device
work	O
with	O
the	O
GCR	B-Device
800KB	O
or	O
400KB	O
diskettes	B-Device
used	O
by	O
older	O
Macintoshes	B-Device
.	O
</s>
<s>
These	O
disks	O
could	O
be	O
used	O
in	O
a	O
SuperDisk	B-Device
drive	I-Device
only	O
if	O
formatted	O
to	O
PC	O
720KB	O
MFM	B-Protocol
format	O
.	O
</s>
<s>
Note	O
that	O
almost	O
no	O
other	O
USB	B-Protocol
floppy	B-Device
drives	I-Device
supported	O
Mac	B-Device
GCR	B-Device
floppies	B-Device
.	O
</s>
<s>
The	O
biggest	O
hurdle	O
standing	O
in	O
the	O
way	O
of	O
success	O
was	O
that	O
Iomega	O
's	O
Zip	B-Operating_System
drive	I-Operating_System
had	O
been	O
out	O
for	O
three	O
years	O
when	O
SuperDisk	B-Device
had	O
been	O
released	O
.	O
</s>
<s>
Zip	B-Operating_System
had	O
enough	O
popularity	O
to	O
leave	O
the	O
public	O
mostly	O
uninterested	O
in	O
SuperDisk	B-Device
,	O
despite	O
its	O
superior	O
design	O
and	O
its	O
compatibility	O
with	O
the	O
standard	O
floppy	B-Device
disk	I-Device
.	O
</s>
<s>
By	O
2000	O
,	O
the	O
entire	O
removable	O
magnetic	O
disk	O
category	O
was	O
finally	O
obsoleted	O
by	O
the	O
falling	O
prices	O
of	O
CD-R	O
and	O
CD-RW	O
drives	O
,	O
and	O
later	O
on	O
solid-state	B-Device
(	O
USB	B-Protocol
flash	O
drives	O
or	O
USB	B-Protocol
keydrives	O
)	O
.	O
</s>
<s>
Over	O
the	O
next	O
few	O
years	O
,	O
SuperDisk	B-Device
was	O
quietly	O
discontinued	O
,	O
even	O
in	O
areas	O
where	O
it	O
was	O
popular	O
.	O
</s>
<s>
Under	O
Windows	B-Application
XP	I-Application
,	O
a	O
USB	B-Protocol
SuperDisk	B-Device
drive	I-Device
will	O
appear	O
as	O
a	O
3.5	B-Device
"	I-Device
floppy	I-Device
disk	I-Device
drive	O
,	O
receiving	O
either	O
the	O
drive	O
letter	O
A	O
:	O
(	O
if	O
there	O
is	O
no	O
floppy	B-Device
in	O
the	O
machine	O
)	O
or	O
B	O
:	O
(	O
if	O
there	O
already	O
is	O
one	O
)	O
.	O
</s>
<s>
This	O
enables	O
use	O
by	O
software	O
that	O
expects	O
a	O
floppy	B-Device
drive	I-Device
when	O
1.44MB	O
or	O
720KB	O
disks	O
are	O
inserted	O
.	O
</s>
<s>
The	O
USB	B-Protocol
models	O
were	O
quite	O
popular	O
for	O
debugging	O
and	O
installing	O
servers	O
that	O
did	O
not	O
have	O
a	O
CD	O
drive	O
available	O
.	O
</s>
<s>
They	O
could	O
both	O
store	O
massive	O
numbers	O
of	O
drivers	O
for	O
installation	O
purposes	O
as	O
well	O
as	O
be	O
used	O
to	O
run	O
live	O
operating	O
systems	O
,	O
such	O
as	O
ReactOS	B-Application
,	O
which	O
amounts	O
to	O
150MB	O
.	O
</s>
