Hi,
I got a hardrive from an old videorecorder. Id showed not initialized in the Synology disc station and on PC. No way to format it and so on and so on. With the linux command hdprma it could be shown, that a password and security was set. I solved it with some help from the net and my gear at home, by reprogramming and hard format the disc over the service serial connector of the HDD. First I took a USB to serial converter with 3,3V and connected it to the HDD in the way shown in the picture.
Then I inserted a sheet of paper between the head contacts.
Then I followed the video documentation in the Link
The following codes were used:
Connect to serial with 38400 baud, 8, 1, N
switch on power of the HDD
press ctrl-Z in the terminal programm.
type /2 ENTER
wait for 20s
Type Z ENTER
Pull out the paper while leaving power on.
Type U ENTER
Type /1 ENTER
Type N1 ENTER
Power the HDD down, BUT NOT THE SERIAL.
wait 10s
Power on the HDD
press ctrl-Z
Type m0,2,2,0,0,0,0,22 ENTER
Type /1 ENTER
Type N1 ENTER
For me it was done with that, the HDD could be formated then and everthyng worked fine again.
