Error code 0xC0000185 is seen when the hard disk experiences an uncorrectable write error. Typically your will see a message with CHKDSK such as:

Write failure with status 0xc0000185 at offset 0x19f3006000 for 0x1000 bytes.

It is sometimes possible to repair the media by doing a full format. Obviously any data will be lost so its important to copy files to another disk.

The ST3320620AS failed with this error and the disk as replaced as the controllers was unable to contain the media errors. The disk was eventually returned for RMA.

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