Abstract: Disclosed is a system for minimizing the utilization of an I/O bus by a first data-writing peripheral device that is connected to the I/O bus. The system has a second peripheral device that shares the I/O bus connection. The system includes the operations of transferring data to a drive buffer that is in the first data-writing peripheral device. The transferring being configured to continue until the drive buffer has reached a full state. Performing a pre-write calibration of the first data-writing peripheral device after the drive buffer has reached the full state. Commencing a writing of a portion of the data contained in the drive buffer, such that the first data received by the drive buffer is written first. The system further including releasing the I/O bus connection by placing a write thread of the first data-writing peripheral device in a sleep mode.