Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
February 19th, 2016, 14:35
This is a WD40EZRX which had been dropped. The platters generally look okay apart from where the heads impacted the platter surface near the edge, they were probably parked at the time of the drop. There is also other minor damage to the platter edge, probably caused by client trying to mount the drive repeatedly. If we can get past this initial damage I think the chances of recovery are good. What techniques do you use to mitigate this damage after a head swap?
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February 19th, 2016, 17:55
Just scrape off any lose material and burrs, and clean up any dust particles you can see. Then hope for the best. The heads shouldn't be close enough to the platter surface there to be affected, but you just never know if there's unseen damage to the remaining surface. I've had cases like this where almost 100% was recovered, and others (like the one this week) where just could't get anything.
Perhaps you should do what Gillware does and invest in a nice burnish and glide machine:
https://gillwaredatarecovery.wistia.com ... qfz8xr96jfYou didn't need that extra $50,000 anyway.
February 19th, 2016, 18:56
data-medics wrote:Just scrape off any lose material and burrs, and clean up any dust particles you can see. Then hope for the best. The heads shouldn't be close enough to the platter surface there to be affected, but you just never know if there's unseen damage to the remaining surface. I've had cases like this where almost 100% was recovered, and others (like the one this week) where just could't get anything.
Perhaps you should do what Gillware does and invest in a nice burnish and glide machine:
https://gillwaredatarecovery.wistia.com ... qfz8xr96jfYou didn't need that extra $50,000 anyway.
Guess that machine only works with single platter drives so that rules out 95% of all drives. Now if it did multi-platter with dampers I might have purchased two lol..

Thanks for the advice.
February 20th, 2016, 11:41
Yes heads don't read out there, so clean it up and new heads in will do it.
February 20th, 2016, 12:38
That part of the platter is way under the ramp, very far from where the heads will start reading.
February 20th, 2016, 13:57
Nick_CT wrote:That part of the platter is way under the ramp, very far from where the heads will start reading.
Indeed. I was not so much concerned about where the damage is, more the effect on the new heads as it passed over the area.
February 21st, 2016, 23:38
You have absolutely nothing to worry about. I've seen a ton of drives look like that in situations where they didn't even suffer an impact. Sometimes the actual ramp itself will rub the platter right there on that edge.
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