WD HDD DCM Recognition for Head Swap

For DCM number, users can easily find it from the WD label and the 5th, 6th and 7th digits are connected with the physical head parameters.

DCM = Drive Configuration Matrix

Example for old models:


1- Motor (H)

2- Base (S)

3- Latch (E)

4- Bottom VCM (H)

5– Media (Y)

6- Headstack (V)

7- Actuator-Preamp (2)

8- Top VCM (A)

9- Separator (H)