BAD HEADS VS DIRTY HEADS

[zebong]

Hi to all,

Have this seagate momentus 5400.2 with this in terminal:

Interface task reset
4096k x 16 buffer detected
MERCURY - 1_Disk 3.06 05-
Buzz - 27-05 16:43
Head Mask FFFF - Switch to full int.
$Head Mask FFFF - Switch to full int.
Spin Ready
3.06 05-27-05 16:46
(P)PATA Reset
$Head Mask FFFF - Head Mask FFFF -


Look the heads at the microscope i have this

ST-HEADS.jpg (38.37 KiB) Viewed 4252 times

Anyone have good results in Cleaning the heads like this or just find a donor heads ?


Regards

[N.C.]

First of all you should measure the MR sensor for judge it is worth a cleaning or not...

[quasimodo]

To me the heads do not look all that dirty, but then again it's hard to tell just by looking at them. Sometimes I have really good results with cleaning heads and sometimes I don't. it all depends. Sure you can try to clean the heads before sourcing for a donor drive, you can't really lose anything by doing so. On Seagate drives after giving the heads a special treatment I can often recover some data. If only certain files are needed this sometimes works well, but if you need a full image of the drive, the chances are slim.

First of all you should measure the MR sensor for judge it is worth a cleaning or not...

I agree with Janos,

check MR sensor first.

Good luck!

[MANDR]

First of all you should measure the MR sensor for judge it is worth a cleaning or not...

What measurement readings can be expected from good heads in comparison to damaged or dirty ones?

[N.C.]

First of all you should measure the MR sensor for judge it is worth a cleaning or not...

What measurement readings can be expected from good heads in comparison to damaged or dirty ones?

The best if you can compare with donor drive.
Or with another head on the MHA wich is known good.

Anyway, a good MR is from 22-250 ohm, it depends on the head type.
The most of the longitudinar drives have 22-75 ohm, and the most perpendicular have 100-200 ohm.

Janos