January 9th, 2018, 5:59
January 9th, 2018, 6:10
January 9th, 2018, 13:10
January 9th, 2018, 21:01
- ST32122A is a Seagate Medalist ! I do have some of those very old Medalist drives. One good thing, they do have terminal port !!!
http://www.hddoracle.com/viewtopic.php?f=83&t=1073
- If you plug the drive by TTL what is the output of the terminal ?
Please post a sound clip. Is the drive making head sound ? Meaning are the heads moving at all ? DO NOT OPEN THE DRIVE IN CLEAR AIR. By heads moving i mean sound !!!! Can you ear clicking of the heads hitting the limiter ? Again DON'T OPEN THE DRIVE !
If heads were stuck the motor wouldn't spin at all. If the motor doesn't hit full speed heads will not leave the parking zone (or they shouldn't). There should be errors on terminal that will help you out ! Maybe the drive can't read firmware and shuts itself down ? If so the heads should calibrate, attempt to read (without strong "clonk" sound or click sound or whatever). Heads must go to the correct place on platter (track) and not go up untill the end of the platter because they can't find servo. If they go to the end they will hit the limiter and you will [h]ear a caracteristic sound.
You would need some donnors for that drive assuming you are going to do a head stack replacement and finding a drive so old like that will most likely be expensive .... Then you need to practice .... Then you need the clean enviroment that you can get and forget about bathroom full of vapor of hot water .... you do have some chances if you work in a place that doesn't have many dust particles but it's still risky.
Get several of those Medalist drives and swap heads on open air. Then do a full mhdd scan on those drives ..... Can you still access the data ? If NOT forget about opening the drive you want to recover ..... This assuming faulty heads of course but you have to start by a TTL log so that you are sure that the problem is indeed heads. You don't want to swap heads or open the drive if the problem is for example firmware related or PCB related.
If the hdd is old - remove an electronic board and clean all connection. Be careful and do not break any tape.
I would start from this
January 13th, 2018, 19:58
January 14th, 2018, 6:00
jono-ats wrote:This is a case where inspection of the heads and media would be especially enlightening for differential diagnosis. In a clean rom environment, with proper tools and experience, of course . . .
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