Hard Disk Headcrash

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Headcrashes on hard disk drives

Above: A severe headcrash on a Seagate SCSI hard disk

Definition: A head crash occurs when the read / write heads of the hard disk collide with the disk's rotating platter surface. Frequently this causes physical damage to both the heads and the hard disk media.

Cause: Headcrashes are caused by dust or contamination inside the hard disk casing, or by the drive receiving a sudden jolt or shock.

Recovery Possibilities: Headcrashes vary in severity. The data on the drive in this photo is completely unrecoverable due to the amount of damage that has been caused by the headcrash. However, some headcrashes are mild and most of the data can be recovered.

Above: Headcrash close up. Click the picture for an enlargement.

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Please note that all modern hard disk drives are manufactured to very high standards, fail infrequently and have very similar rates of reliability.