hi ya bill
On Sat, 28 Dec 2002, Bill Moseley wrote:
>
> What determines what settings are the default for a drive on boot?
>
> I thought what was needed is to include support for the IDE chipset and
> enable IDE DMA in the kernel. This is what I've done on other machines
> and they boot up with the correct settings.
thats for starters...
and see what the bios itself says about your drives
> And if I can't get it to automatically set what is the common or suggested
> way to enable the settings at boot? Is there a "Debian" way to do that?
> Does the hwtools package init.d script for this?
>
>
> On one Dell machine (Demension XPS T450 PIII) that has a very new CD-ROM
> (see below) I have to use -d1 -c1 -X34 -u1.
there is no "reason" you "have to use" those options
-d1 says turn on dma... you can use it or not.. non-critical
-c1 enable 32bit io support ( default is 16bit ) .. non-critical
-X34 is old style multiwod dma2 .. non critical as long as you are NOT
going faster than the rated dma speed of the drive
-u1 allow the cpu to do other stuff while waiting for the "disk
seeks/etc" .. non-critical..
-- everything should work by "default"
mount -t iso9660 -o ro /dev/hdc /mnt/cdrom
ls -la /mnt/cdrom
> And my config has:
>
> --- IDE chipset support/bugfixes
>
> [*] Generic PCI IDE chipset support
> [*] Sharing PCI IDE interrupts support
> [*] Generic PCI bus-master DMA support
> [*] Use PCI DMA by default when available
> [*] Intel PIIXn chipsets support
> [*] PIIXn Tuning support
and what chip set does the dell have for itd ide controller
- those bug fixes need to be turned on too
> # hdparm -i /dev/hdc
>
> /dev/hdc:
>
> Model=PLEXTOR CD-R PX-W4824A, FwRev=1.00, SerialNo=029043
> Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
> RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
> BuffType=unknown, BuffSize=0kB, MaxMultSect=0
> (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
> IORDY=on/off, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2 udma0 udma1 udma2
good...
- should tell you what its dma/pio capabilities are
( the * marks the current dma xfer speed )
- you are already running multiword dma2 ( -X34 )
- but why bother ???
you should be using udma2 ( -X64 ) instead ... faster/better
> AdvancedPM=no
c ya
alvin
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