| 360 / | HD | DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL |
| 88 | DF | RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING {4} |
| 97.01 | DF | .~ Disk record {6} |
| 98.01 | DF | .~.~ Plural disks {4} |
| 98.02 | DF | .~.~.~ Axially fixed flexible disks {1} |
| 98.03 | ![]() | .~.~.~.~ With pneumatic partioning of disks |