usbat_write
if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) !=
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) !=
rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);