A disk drive is disclosed comprising a disk comprising a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors. Inconsistencies between the desired instance and the observed instance may be detected based on a comparison between the desired instance and the observed instance. This is accomplished by allocating and deallocating individual resource units to each resource based on sampled estimates of the instantaneous resource needs of the program running on the microprocessor. The restriction and angled connection of the venturi pipe creates a low pressure area which draws fabric articles through the piping and discharges them directly into receptacles such as sling carts. The invention further relates to a process for preparing a thermostable solid composition and to a process for preparing pharmaceutical dosage forms comprising the same.