Epson 386/25 - Manual (Page 89)

Note
You can bad MS-DOS from an application program diskette
if that diskette contains the operating system. See your
MS-DOS Reference Manual for information about creating a
system diskette.
Inserting and Removing Diskettes
If you have a 5¼-inch diskette drive, insert a diskette as follows:
hold the diskette with the label facing up and the read/write slot
leading into the drive, as shown below.
Slide the diskette into the slot until it is in all the way. Then
turn the latch down to lock it in a vertical position. This keeps
the diskette in place and allows the read/write heads in the
diskette drive to access the diskette.
When you want to remove a diskette, first make sure the disk
drive light is off. Then flip up the latch and carefully pull out
the diskette. Place it in its protective envelope and store it in a
proper location, such as a diskette container.
Using
Your Computer 3-19