[ale] ata 100 and RH 7.0

[Chris Egolf]

On Tue, 23 Jan 2001, Michael Smith wrote:

> Is there any way of knowing whether you are using ATA-UDMA/100 when linux is
> booting up(Kernel Message?).  I have everything working but I may not be
> really using the drive to its full potential....
> 
I know the Highpoint chipset shows up in dmesg if you are using a patched
2.2.x kernel or have enabled it in 2.4.  I think you can also try using
'hdparm -i' and look at the current DMA mode.  If it's udma4 or greated
(I think udma4=UDMA/66 and udma5 is ATA-UDMA/100) than I'd think it's safe
to say you're using it.


> -----Original Message-----
> From: Chris Egolf [mailto:cegolf at ugholf.net]
> Sent: Monday, January 22, 2001 7:01 PM
> To: ale at ale.org
> Subject: Re: [ale] ata 100 and RH 7.0
> 
> 
> JB Wells wrote:
> > 
> > I've heard in the past that RH 7.0 supports ATA 100,
> > but upon trying to install it this morning on a system
> > with an Asus A7v mb and IBM ata 100 drive, the
> > installation program wouldn't recognize it.
> > 
> > I've also seen posts in the past regarding various
> > kernel patches that could be applied to get this
> > working.
> > 
> > Has anyone successfully run a Redhat 7.0 installation
> > on an ATA100 drive?  If not, could someone point me to
> > more info on these patches/fixes?
> > 
> 
> I don't know what chipset the Asus board uses, but I've successfully
> installed RH7.0 on Abit motherboards that have the ATA-UDMA/66 and
> UDMA/100 Highpoint chipsets.  Basically, you have to patch the kernel or
> use 2.4.x to get native support for these IDE channels, and Redhat 7.0
> doesn't support them AFAIK.  However, you can provide kernel parameters
> for adding the additional IDE channels.  Again, if this is different for
> ASUS, ignore me, but the Abit mb's have UDMA/33 channels for IDE0 &
> IDE1, and the UDMA66/100 stuff is on IDE2 & IDE3.  The following
> mini-HOWTO describes how to find out the addresses for these other
> channels (look for the section on enabling HPT366 without UDMA/66
> support):
> 
> http://www.csie.ntu.edu.tw/~b6506063/hpt366/
> 
> Basically, you'll have to start the install, and when you get to the
> GUI, press ALT-F2 to get to a shell console.  Then, 'cat /proc/pci |
> less' to find the I/O addresses of the device.  Then reboot and when you
> get to the text-based startup screen to begin the install, instead of
> pressing enter, you'll have to type something like "linux
> ide2=0xb000,0xb402" for example.
> 
> The one thing I always forget is that until you patch the kernel, you
> still won't have the support, so you'll have to do this each time. 
> After to do this to boot the new OS the first time, edit your
> /etc/lilo.conf and add an 'append="ide2=0xblah,blah+2"' to each stanza,
> and rerun lilo.
> 

-- 
============================================================================
                               Chris Egolf
             http://www.ugholf.net     cegolf at ugholf.net   
============================================================================

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