Examples of a soft bad block include when the cyclic redundancy check (CRC), or error correction code (ECC), for a particular storage block does not match the data read by the disk. A soft, or logical, bad block occurs when the operating system (OS) is unable to read data from a sector. There are two types of bad blocks: A physical bad block comes from damage to the storage medium. Bad block may indicate corruption or physical damage. Open Disk Management to see the list of drives and the corresponding drive #.Ī bad block is an area of the hard drive that is no longer reliable for storing and retrieving data.
If you have multiple hard drives and want to know which hard drive has a bad block, note down the Disk # indicated in the event log. The same error occurred for my secondary hard drive ( Disk 1), and the error message read The device, \Device\Harddisk1\DR1, has a bad block. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly. The system has rebooted without cleanly shutting down first. The device, \Device\Harddisk0\DR0, has a bad block.Īfter restarting Windows, the following event log entry gets added. The System event log showed multiple disk error entries.
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