On Thursday 13 September 2001 09:26 pm, you wrote: > OK, found hdparm (would have sworn I'd already tried /sbin, but I guess > not. > > Seems my drives are running in 16-bit mode. When I switch them to > 32-bit mode, drive performance nearly doubles (from 2.6-3.7 up to > 6.3-6.7 MB/sec). How do I convince it I want it to run in 32-bit mode > all the time. > > I seem to remember reading somewhere that numbers less than 14 MB/sec > indicate that the drive is not properly configured (as 33 MB/sec is what > you could maximally get out of pre UDMA drives). Someone please correct > me if I'm wrong. > > My other (older) laptop also seems to default to 16-bit mode, but it's > numbers are [16-bit] 7.59 MB/sec & [32-bit] 7.62 MB/sec. I'd expect my > new laptop with a 20GB drive (same height and spindle speed) to be > faster than the old 4GB drive. Am I off base here, or not? > Try these in the append= field of lilo.conf or the kernel line in GRUB (always leave a stock kernel entry for safety or keep a bootdisk handy): ide0=0x1f0 ide0=dma ide0=autotune ide1=dma ide1=autotune floppy=daring (the first loads the more modern IDE driver which is not loaded by default, the latter loads a faster floppy driver). and do an hdparm -t before and after and see if it helps. YMMV Hoyt
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