Epson 3865X Plus - Manual (Page 55)

If you want to change the drive type, and the configuration
of the hard disk you are installing matches one of the drive
types listed in the Hard Disk Drive Types table, go to step 6.
If you want to change the drive types, and the configuration
of the hard disk you are installing does not match one of the
drive types listed in the Hard Disk Drive Types table, go to
step 7.
6. Highlight Type and press Enter. The current type
number appears:
Now select the drive type number that matches your hard
disk configuration in the Hard Disk Drive Types table.
2-20 Running the Setup Program