On Thursday 24 April 2003 11:13 am, Shawn wrote: > On Thu, 2003-04-24 at 04:53, Michael Schwendt wrote: > > Back to the original problem, could it be that the harddisk model is > > on a blacklist inside the kernel? > > This could be very possible actually. Especially if you can't use > hdparm to enable it. What IDE controller do you have? I'm not sure if > the blacklisting would appear in dmesg or not, you might check there. Well, in RHL v7.3 I was running a stock kernel 2.4.20 (built by me with Generic PCI support) and all was well. With Red Hat's tweaked kernel 2.4.20-9 (from RHL 9 updates) I seem to be unable to set DMA for this same hard disk and controller. I am rebuiling the kernel as I type with with the .config file used to build my kernel under v7.3. If DMA is once again supported for this same hard disk I will add in Red Hat's config changes until it breaks. All of the above is a very verbose way of saying that I'm skeptical that my controller (OPTi 82C825 [Firebridge 2, rev 48] on a Compaq Presario 1260) is blacklisted. Unless, of course, RH is adding to the blacklist found in the stock 2.4.20 kernel.
