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Bad block found - marked by Scanner?

edited July 2012 in Scanner
I had performance problems on my old WHS1 and according to a scan one or several disks were failing. So I bought new HDDs, installed WHS2011 and hooked up the old disks one by one using a SATA USB bay to recover data and surface scan them. 

According to Scanner 2 out of the 4 old disks have one bad block each. I wonder if Scanner marks these blocks as bad so the OS won't try to write data to these blocks or do I have to run Chkdsk to do that? I understand the risk to continue using the disks if more blocks go bad but it can be good to have spare disks for non critical data. 


  • I checked the Windows system log and it's containing warnings about the bad block so the OS is also aware of it. Does Scanner mark blocks as bad or is it the OS?
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