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Ubuntu has gotten very slow. Is there anyway to tell it not to try to read a sector if its bad more than a few times? It takes days to weed thru a drive with 7000 bad sectors . With 4 trys a sector an IBM with 640k running at 10mhz could do it in 20 minutes but Ubuntu 20 takes days on a 3ghz with 3 gbyte ram.

21.9.2021 12:32 MESZ recuperation
inserted "for sector read operations" into your title

doccpu wrote: 21 Sep 2021, 04:31 Ubuntu has gotten very slow. Is there anyway to tell it not to try to read a sector if its bad more than a few times? It takes days to weed thru a drive with 7000 bad sectors .

I doubt it as drives with a reduced retry count are sold as "RAID-ready" or similar with a nice markup in price.
Please consult with your manufacturer.