User`s guide
34
4). This mode will do a sector-by-sector compare to ensure 
that the data was copied exactly from Drive1 to Drive2. 
CAUTION – If during copying some abnormality occurs 
or errors are detected a low frequency sound (a buzzer will 
sound a low frequency buzz) will occur and then the power 
LED will turn red. When this happens push on the blue 
Power button for approximately 10 seconds and the Disk 
Jockey will power off. It is a good idead to recheck the hard 
disk drives using the standard mode.
MODE 4 (COMPARE MODE)
Mode 4 is the hard disk drive Compare mode. This mode 
is typically used following a Disk Copy. In compare mode 
two drives that have just completed the copy process are 
attached to the Drive1 and Drive2 ports of the Disk Jockey 
(if you have just completed the Disk Copy you can simply 
flip the mode switch on the unit after powering down the 
Disk Jockey) to Mode 4. The Disk Jockey then goes sector-
by-sector and compares the data written on both drives in 
an effort to verify that the data written to the two drives is 
identical down to the sector level. The same speed factors 
that were discussed in the explanation of Mode 3 (Disk 
Copy Mode) are still in affect with Mode 4, meaning that 
drive size and speed are the largest factors of how long this 
process will take. In Compare Mode the Disk Jockey IS 
NOT connected to the computer. 
How to set up drives using the Compare Mode option










