No! That defines the clocking of the IDE-BUS!
There are no parameters to force a backspeed from LILO.
On Wed, 24 May 2000, Dr. Kelsey Hudson wrote:
> You didn't read that error message well enough. :)
>
> Look, you can pass a kernel parameter on boot with the
>
> idebus=33
>
> option to tell it to go to UDMA/33 instead of UDMA/66.
>
> Kelsey Hudson khudson@ctica.com
> Software Engineer
> Compendium Technologies, Inc (619) 725-0771
> ---------------------------------------------------------------------------
>
> On Wed, 24 May 2000, Jan Niehusmann wrote:
>
> > After upgrading from 2.3.99-pre7-8 to 2.3.99-pre9-5, one of our machines
> > didn't find it's partition tables any more. The only difference in the
> > bootup messages is that the old kernel reports UDMA(33), and the new
> > kernel reports UDMA(66) for some of the drives.
> >
> > >From /proc/pci:
> > IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev 193).
> >
> > with the old kernel:
> >
> > 33MHz system bus speed for PIO modes; override with idebus=xx
> > ALI15X3: IDE controller on PCI bus 00 dev 78
> > ALI15X3: not 100% native mode: will probe irqs later
> > ide0: BM-DMA at 0xd400-0xd407, BIOS settings: hda:DMA, hdb:pio
> > ide1: BM-DMA at 0xd408-0xd40f, BIOS settings: hdc:pio, hdd:pio
> > hda: IBM-DJNA-352500, ATA DISK drive
> > hdb: Maxtor 54098U8, ATA DISK drive
> > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> > hdc: IBM-DPTA-353750, ATA DISK drive
> > ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> > ide1 at 0x170-0x177,0x376 on irq 15
> > hda: 49981680 sectors (25591 MB) w/1966KiB Cache, CHS=3111/255/63, UDMA(33)
> > hdb: 80041248 sectors (40981 MB) w/2048KiB Cache, CHS=79406/16/63, UDMA(33)
> > hdc: 73261440 sectors (37510 MB) w/1961KiB Cache, CHS=72680/16/63, UDMA(33)
> > Partition check:
> > hda: hda1 hda2 < hda5 >
> > hdb: hdb1 hdb2
> > hdc: [PTBL] [4560/255/63] hdc1 hdc2
> >
> > The new kernel reports UDMA(66) for hdb and hdc, and doesn't find any
> > partitions (not even on hda!). Then, of course, root mount fails.
> > No other error messages.
> >
> >
> > Is there a kernel option to force UDMA(33) / disable UDMA(66) ?
> >
> >
> > Jan
> >
> >
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.rutgers.edu
> > Please read the FAQ at http://www.tux.org/lkml/
> >
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.rutgers.edu
> Please read the FAQ at http://www.tux.org/lkml/
>
Andre Hedrick
The Linux ATA/IDE guy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed May 31 2000 - 21:00:12 EST