IBM 330 Type 6577, User Manual, Page: 39 / 102

Identifying Diskettes
The 5.25-inch diskettes have few physical characteristics
to distinguish a 1.2 MB diskette from a 360 KB diskette.
However, the 360 KB diskette generally has a white band
around the center hole. Otherwise, you must rely on the
manufacturer's labels. The 1.2 MB diskettes usually are
called high density (HD); 360 KB diskettes usually are
called double sided/double density (DS/DD). If the diskettes
come with plain labels, you might want to mark the
capacity on each label.
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5.25 Inch 3.5 Inch
Diskette Label
Chapter 3. Operating Your Personal Computer
29