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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
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250GB 7200.4 Momentus. VERY slow reading

November 29th, 2011, 15:07

This drive comes ready, ID's perfectly, no unusual noises, no errors popping up in terminal, but it just reads sooooo slow. In DDI, there are only a few areas where you can read anything at a decent rate. Most sectors can't be read unless you have it ignore ECC errors. If I let it run in this mode, I'll be dead before it finishes. I didn't see any CE Log errors crop up in terminal. Everything appears to be normal. Any ideas on what else to check? I don't like the thought of just swapping heads, without having a good reason to do so.

Re: 250GB 7200.4 Momentus. VERY slow reading

November 29th, 2011, 16:11

gtd4242 wrote:Any ideas on what else to check? I don't like the thought of just swapping heads, without having a good reason to do so.


small things to try:
1) check firmware modules
2) screw/unscrew head'screw
3) try forward/back direction
4) decrease block size also help to leave less occupied the hard drive data flow to any data exctractors.

anyway i usually do this after have tried all that up: read with the first set of heads using the most fast heads, swap again and read with the others heads, if necessary swap it again ( maximum personally i reached 4 swaps to read at medium speed an hard drive, but it need many donor parts and customer must understand it )

cheers.

Re: 250GB 7200.4 Momentus. VERY slow reading

November 29th, 2011, 16:20

Have you done a head map & media test to check the heads?
Also could you image via mft & only selecting the files you require instead of imaging the whole drive? Assuming its ntfs.


Loki
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