Specifications

When removed from the drive, the diskette is stored in an envelope. To protect the diskette, the same care and
handling procedures specified for computer tape apply. These precautionary procedures are as follows:
a. Return diskette to storage envelope whenever
it is removed from drive.
b. Keep diskettes away from magnetic fields
and from ferromagnetic materials which might become
magnetized. Strong magnetic fields can destroy recorded data on disk.
c. Replace storage envelopes when they become worn. cracked, or distorted. Envelopes are design-
ed to protect disk.
d. Do not write on plastic jacket with lead pencil or ball-point
pen. Use felt tip pen.
e. Heat and contamination from carelessly dropped ashes can damage disk.
f. Do not expose diskette to heat or sunlight.
g. Do not touch or attempt to clean disk surface. Abrasions may cause loss
of stored data. '
8.2.1 Write Protect: Shugart 8-Inch Diskettes
The Shugart 8-inch diskettes have the capability of being write protected. The write protect feature is selected by
the slot
in the diskette. When the slot is open. it is protected; when covered, writing is allowed. The slot is closed by
placing a tab over the front of the slot,
and folding the tab over to cover the rear of the slot. The diskette can then be
write protected by removing the tab.
See figure 8-2.
8.2.2 Write Protect: IBM Diskettes
IBM diskettes are not manufactured with a pre-punched write protect slot.To write protect one of these diskettes, a
slot must be
punched out as speCified in figure 8-3. The operation of the write protect is that which is outlined in
paragraph 2.2.20.
TAB
WRITE PROTECTED
FOLD OVER BACK'
OF DISKETTE
I
~
I,
o@ c:::::>
'---
D
FIGURE 8·2. DISKETTE WRITE PROTECT
WRITE ENABLED
50574·60
RADIUS
0.075 ± 0.005
(0.191
± 0.013 em)
x.xxx = in.
(x.xxx)
= em
0.200 ± 0.010 1 ~
(0.508 ± 0.025 em)
0.150 ± 0.005
-
U
(0.381 ± 0.013 em)
.~
.© c::::>-"t:.175 ± 0.005
(15.685 ± 0.013 em)
~D~----,l
50574·61
FIGURE 8·3. WRITE PROTECT NOTCH SPECIFICATIONS
8-2