Epson ActionNote 866C User Manual page 46

To insert a diskette, hold it with the label facing up and the
shutter leading into the drive. Slide it into the drive until it
clicks into place.
To remove the diskette, make sure the diskette drive light is off;
then press the release button. When the diskette pops out,
remove it and store it properly.
Caution
Never remove a diskette or reset or turn off the computer
while the diskette drive is being accessed; you could lose
data. Also, be sure to remove the diskette before you turn off
the computer.
Using Your Computer 2-11