WD RE4 head change (MB05003ABYX)

[CraigL]

Hi,

I am getting back into DR after a 6 month gap.

I have performed a head change on this drive (perfect match from RAID 1 pair), as the heads had failed, usual 3 click and power down. During the process of the replacement I see the heads were completely twisted, there is no visible damage to the platter.

The procedure went well, and now the drive spins up and sounds perfect, however it still does not detect.

Any recommendations to try?

C

[Nick_CT]

Can you read the SA modules?

[drc]

Head replacements in WD desktops are usually more complicated than just the physical aspect

[Farhan709]

One of the head is bad turn off that head and make clone with the rest of the heads.
Once cloning with rest of the heads is done replace head.

[hddguy]

Hi,

I am getting back into DR after a 6 month gap.

I have performed a head change on this drive (perfect match from RAID 1 pair),

Why you need second HDD if from RAID1?

The problem with WD heads change is older than 6 months.

After change the spindle does not stop, this is good sign, can you read SA as Nick_CT suggests? Maybe some overlay is bad also?

[CraigL]

Update on this, it seems the machines I used yesterday weren't liking it much... Odd, but I am now able to read random sectors and am in the process of cloning the disk.

Good Q @hddguy... Why? Because it would seem someone didnt initialise the RAID.. Disk was full of zeros when I opted to recover from that drive!

Thanks everyone for your assistance!