Patent ID: 8107184
Filing Date: 2012-01-31
Classification: G11B

Abstract:
1. An operation control apparatus controlling an operation of a magnetic disc device having a magnetic disc and a magnetic head for writing or reading information in or out the magnetic disc while moving over the magnetic disc without being in contact with the magnetic disc by giving an operation start instruction to the magnetic disc device, the magnetic disc device being provided with a guarantee range of assuring reliability of operation with respect to a state of barometric pressure comprising: a recording device that records a previous closing information indicative of whether or not the operation control apparatus ends when a previous power-off of the magnetic disc device is executed under a state of normal barometric pressure within the guarantee range of assuring operation of the magnetic disc device; and an operation control device that gives the operation start instruction to the magnetic disc device in a case where the operation ends under the normal barometric pressure, irrespective of a state of a barometric pressure at a time of a power-on of the magnetic disc device after the power-off, in reference of the previous closing information thus recorded at a time of starting the operation of the operation control apparatus by the power-on after the power-off.