Panasonic Toughbook CF-F9KWH011M Reference Manual page 145

Hard Disk Drive
To insert
Insert the hard disk drive until it securely fits in the slot.
A
CAUTION
Confirm that the latch is surely locked so that the hard disk does not fall when you carry the computer.
NOTE
You can erase the data before changing the hard disk drive (
You can check that the hard disk is recognized or not in the [Information] menu of the Setup Utility (
hard disk is not recognized, turn off the computer and insert it again.
page 191).
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page 149). If the