Error Message: Can't read from the source file or disk or Drive not accessible, data error or Cyclic Redundancy Check (CRC) error which is a data verification method that computer uses to check the accuracy of data on the disks.
That error occurs due to hard drive corruption, cluttered disk or there’s a bad spot on the hard drive. Whenever you experience CRC error issue, you must resolved as soon as possible to avoid data loss, as Cyclic Redundancy Check is very serious error and it prevent you from copying files and accessing your hard drive data.
There are many ways and software claiming to fix and recover corrupted data but 99% of them don't really work, I have found that windows 10 CHKDSK and Recuva data recovery software are the best to fix the Cyclic Redundancy Check (CRC) issue and help to recover almost all files.
Windows CHKDSK command may fix CRC issue but it may clean out important data along with the errors, therefor you will need to use recovery software like Recuva to recover and repair corrupted unreadable video files (.mp4 , mkv , .avi , .MOV), photos, office word, excel files and all types of data.
Check Disk Command for Cyclic Redundancy Check (CRC):
chkdsk Z: /f /r /x
Replace Z: with the letter of your Drive or partition you would like to scan
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