On Thu, 2006-03-23 at 17:25 -0500, JimD wrote: > On Thu, 23 Mar 2006 14:26:20 -0700 > Joseph <[EMAIL PROTECTED]> wrote: > > > Before ejecting put any CD / DVD disk IN and run: > > dd if=/dev/hdc of=backup.iso or > > cat /dev/hdc >backup.iso > > > > When finished run "eject ..." > > and > > hdparm /dev/hdc > > > > See if the parameter "using_dma" was reset. > > [EMAIL PROTECTED] # dd if=/dev/hdc of=backup.iso > CTRL+C > 37824+0 records in > 37824+0 records out > > /tmp > [EMAIL PROTECTED] # ls -l backup.iso > -rw-r--r-- 1 root root 19M Mar 23 17:20 backup.iso > > [EMAIL PROTECTED] # hdparm /dev/hdc > /dev/hdc: > IO_support = 1 (32-bit) > unmaskirq = 1 (on) > using_dma = 1 (on) > keepsettings = 0 (off) > readonly = 0 (off) > readahead = 256 (on) > HDIO_GETGEO failed: Invalid argument > > DMA is still on. I don't know why I always get that "HDIO_GETGEO > failed" error. > > Do you have another CD/DVD drive you can try? Are you using SCSI > emulation? > > I am using kernel 2.6.15-gentoo-r7 > > Jim
Did you do "eject /dev/hdc between dd and hdparm? dd if=/dev/hdc of=backup.iso eject dev/hdc hdparm /dev/hdc Yes, I've tried this combination on two different machines with two different drives and DMA gests rest on both. amd64 + BenQ DVD x86 + Plexwriter I'm using kernel 2.6-15 -- #Joseph -- gentoo-user@gentoo.org mailing list
