CD-RW/DVD Combo drive and DVD playback

Message

ejfinneran · Post by **ejfinneran** » Sat Dec 27, 2003 4:31 pm

I was thinking of picking up a DVD/CD-RW combo drive for my laptop. Then I thought, well in order to get good cd burning support SCSI emulation would need to be enabled. (ATAPI burning still seems to need some stability work to me) But in order to view DVDs smoothly, the drive would need DMA enabled, which I'm pretty sure is impossible if SCSI emulation is on. Perhaps I need to give ATAPI cd burning another shot but I just wanted to see how you guys dealt with this situation. Thanks

MacFlecknoe · Post by **MacFlecknoe** » Sat Dec 27, 2003 5:24 pm

You just turn on DMA a little differently on a scsi-emulated device... instead of accessing it via /dev/hdX you access it through the bus:

Code: Select all

hdparm -c1 -k1 -d1 -X66 /dev/ide/host1/bus0/target1/lun0/generic

tada...

BitJam · Post by **BitJam** » Sat Dec 27, 2003 5:51 pm

I've got a CDROM-RW/DVD combo on my laptop running Gentoo Stable 2.4.x. I tried using ATAPI for writing CD's and it kinda worked but believe it or not it caused dvd's to bomb out about 10 minutes before the end of each disk. Frustrating. I went back to using scsi-ide and everything worked again.

Also, dma was enabled by default.