Why Control Board Swaps don’t work anymore…
by admin on Nov.08, 2011, under Uncategorized
Scott Holewinski, President at Gillware Data Recovery shows us why control board swaps don’t work anymore…
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November 8th, 2011 on 6:39 pm
@thedownloadz Modern HDDs pack more data into less physical space than was previously thought possible. Manufacturers fit ~25GB into ea. sq. inch of platter surface. Even with the most modern techniques, a slight variation & stack up of tolerances occurs when the full head-disk-assembly is completed. To function at the level we have come to expect, drives are individually calibrated after assembly. The calibration parameters are the stored on the hard drive, on the platter, PCB, or commonly both
November 8th, 2011 on 7:27 pm
I don’t understand why the calibration would be different for drives with the same sizing and specs. Do they calibrate in the factory and then burn that data onto the pcb? Furthermore, is this an attempt by manufacturers to prevent reuse or secondary markets of their products?
November 8th, 2011 on 8:02 pm
ive gotten lucky 2 times with this, both WDC drives. 1st set was a 80 gb bb one had a bad controller board ( shorted out ) so i swapped the boards around, and voila, i was able to copy all the data off of it. 2nd set was a IDENTICAL set of silvertops 120gb IDE, everything was the same, down to the DCM, after these 2 lucky occurances, i can no longer do it. i think i just got lucky those 2 times, after that it has never worked, each drive has its own adaptive information particular to the drive.