On ���, 2002-01-27 at 16:29, Roger wrote: > > In the meantime you could try > > > > echo -n "using_dma:0" > /proc/ide/ide1/hdd/settings > > > > as root. Replace hdd with your drive. I would be very interested if it > > works (I too need to turn it off on my Philips so I'll do it anyway). > > > > -andrej > > > > > > ok, andrej. my memory is returning on this one. becuase of devfs, i > couldn't used hdparm -d0 /dev/hdc to turn-off dma for this particular > ide-cdrw device. becuase so, i had to turn off devfs in lilo by doing > the devfs=nomount append option. > > since then, i haven't tried devfs again becuase of problems. but since i > *am* on kernel 2.4.17-5mdk, i could give it another shot i guess. > > in the mean time, your tip does effectively turn-off dma on /dev/hdc > with devfs=nomount. i used hdparm -d /dev/hdc to verify that it was > turned-off effectively. > > i'm sure it *will* work if devfs allows this. only way to verify at my > end would be to try to burn another cd-r since i can't verify with > hdparm on the ide-scsi device with devfs=mount. > >
Could you please rephrase with less "this" and "it" because I do not understand what all these "this" refer to. I spent all day debugging Mindi and I *did* use the above line (echo using_dma:0 > ...) with devfs and it does work. So it is possible workaround until (if ever) something is fixed in devfs to allow hdparm on ide-scsi'd drives. -andrej
