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To check whether a SATA cable is bad, currently I'd run a disk benchmark and look at the SMART attribute "UltraDMD CRC Error Count." However, that attribute seems to be a rolling average and may not increase immediately if you use a bad SATA cable. Can you suggest a better way?

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migrated from stackoverflow.com Feb 18 '11 at 5:03

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Oh sorry I was meant to ask this on Superuser. Can somebody with sufficient reputation migrate this over, please? –  netvope Feb 18 '11 at 4:48

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Honestly I could rattle offa few tests but ultimately this question is one that begs another question. Why are you wasting valuable time running diagnostics on a cable that costs $.50. In all seriousness if you have any concern with s drive cable, change it and benchmark before and after using any reliable benchmark. If the metrics improve replace the cable, if not look into other potential causes. You will spend hours running proper diags, top quality Sata cables cost $.50 bulk, about $3.00 Retail... Unless you live in Alaska and every computer store North of Washington is out of Sata Cables, you'll waste more time, money and Effort testing the suspect cable than a dozen replacements are worth. It's an efficiency issue.

Try a new cable and compare results, If they're better, keep the new cable, worse switch back and test for other issues, same leave the new one and test for other issues.

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Actually, I'm trying to check whether the new cables I've bought are good. –  netvope Feb 18 '11 at 6:25

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