Epson 386/25 - Manual (Page 83)

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360KB drive–Use 5¼-inch, double-sided, double-density,
48 TPI, 360KB diskettes. (You can also use single-sided,
160KB or 180KB diskettes.) These diskettes contain 40
tracks per side and 8 or 9 sectors per track. With 8 sectors
per track, a diskette holds up to 320KB. With 9 sectors per
track, a diskette holds up to 360KB of information, which is
approximately 150 pages of text.
720KB drive–Use 3½-inch, double-sided, double-density,
135 TPI, 720KB diskettes. These diskettes contain 80 tracks
per side, 9 sectors per track, and hold up to 720KB of
information, which is approximately 300 pages of text.
Note
You must format a new diskette before you can store data on
it. See “Formatting Diskettes,” later in this section.
Drive and diskette incompatibilities
If your computer has more than one type of diskette drive, or if
you use different types of diskettes, you need to be aware of
certain incompatibilities between the drives and diskettes.
Because of the type and size differences, you cannot use a
3½-inch diskette in a 5¼-inch drive or vice versa. There are
also limitations on using diskettes that are the same size as the
drive but have different capacities. The following tables
summarize the possibilities and limitations.
5¼-inch drive/diskette compatibility
Drive type Diskette types it can read from
and
write to
360KB 360KB, 320KB, 180KB, 160KB
1.2MB 1.2MB, 360KB: 320KB; 180KB: 160KB*
* If you write to this diskette in a 1.2MB drive, you may not be able
to read it or write to it in a 360KB drive later.
Using Your Computer 3-13