WD800 Sabre58

[pclab]

Hi

I have this drive that clicks when power on.
After it goes ready, I can edit headmap in RAM and work with head 1 (head 0 seems dead).
I can read FW and tracks, but can't get it to ID well.
Even after I load 11.rpm.
This is the log:

RAM:
Read HDD Info : ................................: OK
Heads number : .................................: 2
Head map : .....................................: 3
SA Cyl Count : .................................: 64
Serials Mark : .................................: 5816
Control version : ..............................: 31B2

Zone allocation table : ........................: OK
SA SPT : .......................................: 533

ROM:
Read Rom Infos : ...............................: OK
ROM Data Size : ................................: 128 Kb
ROM version : ..................................: 06.BTD
ROM generation : ...............................: 06.BTD
Link table version : ...........................: 01.BC
ROM Firmware version : .........................: 000600BT

ROM Modules:
Switched off heads : ...........................: Yes
Heads number : .................................: 20
Heads number in use : ..........................: 2
heads map : ....................................: 0,1

SA Module Dir Loading...
Load SA Module dir : ...........................: OK
Configuration reading : ........................: Err

It's also ID as a Unicorn - XYZ 5GB drive.

Any chance to access at least one plater surface (I just need a 100mb database which with luck could get it from there)??
What's the next step?
Thanks

 

[Jared]

Have you checked the modules in the modules directory to see if they all pass checksum? Perhaps there's a few that aren't getting read properly.

 

[Jared]

Oh and with only two heads in that drive, I highly doubt there's a chance the full 100Mb isn't striped. Should be cheap enough to find a heads donor.

Also you can try writing the tracks to a donor of the same family and same headmap. If it ID's then you can just put it to sleep and hotswap over.

 

[pclab]

The modules pass on SA test, but not on hardware test (only module 35).
I can read tracks from head 0 and 1 though...
About headswap, aren't these drives tricky with the alignment?

 

[Jared]

Might be, but usually with a bit of fiddling around with the cover screw you can get it to work just fine.

Did, you look at the tracks read from head 0 to see if it looks like any data? I know I've got one here now that acts like it reads tracks, but when I look at the data in hex it just says "DE AD DE AD DE AD" which I'm pretty sure is it's way of saying the head is dead.

 

[hdd00]

Hi

If you have a SA copy why don't you prepare a donor for hot swap and see if you get any luck and can read with both heads?

Rgds

 

[pclab]

Hi

I don't have a fully match of the HDD model....
It has to be the same, right?

 

[hdd00]

A drive from the same family will be sufficient.

Rgds

 

[pclab]

Hi Jared

I have checked tracks from Head 0 and Head 1 and both have valid data, they match....
So heads are OK, right??

 

[Jared]

The heads must both be at least semi functional if you read tracks from both. Have you tried composite read and write the composite tracks to a donor yet?