A base plate and a cover plate for a hard disk drive. At least one of the base plate and the cover plate is formed with a push pin hole extended in a slot shape in a predetermined length through which a push pin passes to implement a servo track write. The push pin hole is provided with an enlarged portion to prevent collision of the push pin, when the push pin enters into the push pin hole.

 
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< System and method for identifying track squeeze errors (TSEs) of a disk of a disk drive

> Rotor blade and hard disk drive having the same

> Production method for magnetic recording medium

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