Messages in this thread |  | | | Date | Sun, 30 Mar 1997 03:40:24 +1200 (NZST) | | From | Joseph Skinner <> | | Subject | Re: CMD IDE & waffle on graphics startup crap |
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On Fri, 28 Mar 1997, Richard Mark Hemsley wrote:
> I have a rather thick CMD 640 IDE card. > Compiling the kernel with CMD640 support is ok, > but if I stick the flag IDE..whatever... in the bootparams > it just gets to 'Buggy CMD640 interface on IDE....' > Kernel is 2.0.18. > > Also, I just got a 2.5G Western Digital Caviar. > Some geezer was asking if over 2G works w/ linux. > It certainly does. LILO complains, but I'm using loadlin > on a diddy 10M partition so I can initialise my sound card. > fdisk does _not_ like the big drive. Don't worry, cfdisk > copes just fine. > > This is related actually cos the reason I want my CMD > working is to get the PIO modes set on my drives. > My 1G & 2.5G both support PIO4 but don't get it. > > I did an hdparm -T -t on the 2.5G and the drive transfer > time was a pedestrian 600K/s. The same as my old faithful > 340M Maxtor. >
I have a CMD 640 on a pci mother board and use the following settings for it.
hdparm -p8 -u1 -m16 /dev/hda hdparm -p8 -u1 -m16 /dev/hdc
-p = drive mode [p8 disables prefetch and someother things so that I can enable interupts] -u = enable or disable interupts -m = sectors to read per interupt
These seem to give the best results on my system [an amd 486/100.] YMMV.
Hope this is of use Joe.
======================================================================= in real life: Joseph Skinner |There's no such thing as a wizard email: joe@earthlight.co.nz |who minds his own business jskinner@es.co.nz | - Berengis the Black http: www.earthlight.co.nz/users/joe| Court Mage to the Earls Caeline ========================================================================
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