{
        struct ide_atapi_pc *pc = drive->pc;
        ide_hwif_t *hwif = drive->hwif;
+       u32 tf_flags;
        u16 bcount;
        u8 scsi = !!(drive->dev_flags & IDE_DFLAG_SCSI);
 
        if (!drive->dma)
                pc->flags &= ~PC_FLAG_DMA_OK;
 
-       ide_pktcmd_tf_load(drive, scsi ? 0 : IDE_TFLAG_OUT_DEVICE, bcount,
-                          drive->dma);
+       if (scsi)
+               tf_flags = 0;
+       else if (drive->media == ide_cdrom || drive->media == ide_optical)
+               tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL;
+       else
+               tf_flags = IDE_TFLAG_OUT_DEVICE;
+
+       ide_pktcmd_tf_load(drive, tf_flags, bcount, drive->dma);
 
        /* Issue the packet command */
        if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {