SATA drives are treated as scsi in the kernels. Therefore you dont have to enable DMA on them. it should also be accessed at /dev/sda not /dev/hda. if DVD's are slow enable dma for the dvd drive. If that fails, the kernel might be setup to only use dma for disk drives, so rolling your own might be a good idea.
On 10/12/05, Phil Strong <[EMAIL PROTECTED]> wrote: > I recently upgraded my box with a shiny new Seagate SATA (400GB) a new video > card, processor, etc basically is all new. > > I installed a fresh copy of FC4 and everything seemed to work fine. Went > to play videos and/or DVD's and the video is jumpy/slow. I did some > research and found I should make sure DMA is on for my HD. It is in fact > turned off. > > /boot 250mb ext3 > / 10GB ext3 > /swap 1GB > /video 3** GB JFS > > First I tried to us hdparm -u1 /dev/hda but it tells me it can't enable DMA > > I even tried unmounting /dev/hda5 (/video) and just enabling on that but to > no avail. > > I tried to recompile my kernel to be sure I had SATA support and DMA stuffs > but it gives me kernel panic VFS can't load block(0,0). > > HELP! > > ideas? > > -- > Phil Strong
