Archived discussions regarding the Stand-Alone-Tools

Re: Why is HD Clone 3.8 sooo slow

Post by Moh » Mon Mar 29, 2010 4:48 pm

Hello,

I have been running mine for 240 hours now doing partion to partion from one usb to another usb it had found bad sectors which i expected on the source drive but the it says that is will require another 7851 hours to copy the bad sectors is this normal , hdclone did find 2 million read errors during copy.

from Moh
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Re: Why is HD Clone 3.8 sooo slow

Post by Alex » Mon Mar 29, 2010 4:56 pm

You have to keep in mind that every error that occurs has a major speed impact for HDClone's USB driver, since there's simply no clear way to 'walk over' erroneous sectors, but there has always some sort of recovery to be done internally in the USB stack, which unfortunately takes very long and leads to these absurdly high time estimates.

If consecutive sectors keep to show errors, then it is often an error in the controller where the USB stack is irrevocably lost, and waiting further does not help much. Usually, only direct disk errors that are passed through are handled gracefully, otherwise it would be wiser for the driver to give up on such disks...
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