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I am having similar problems with mine and I am also running RH9 and have the same HD. I am working through some issues and will update my thread. You may want to check it out but I have nothing yet to add as I have not tested my fixes yet. If you want to try in parallel (which I am sure you do) go to www.nforcershq.com and search the Linux Forum for Judokas or seagate and 120 - people have given me some suggestions there.
To enable dma you use hdparm -d1 /dev/hdX where X is your drives value (in my case hde) an easy way to find this is run dmesg and see which one your drive was put on. After this it is consistent (unitl you play around with things).
With the help of some kind individuals I found a solution that seems to work 47MB/s (Seagate says 58MB/s+ but I am happy to at least have 47). You can go to link:
I have also read (you will have to search for RAID) that if you RAID your drives (if you have two) the performance almost doubles. Don't know much about it but there seems to be lots of discussion because the newest kernels are attempting to support it.
Hi. I'm going through a similar drill with my SATA disk and a via-based motherboard. I found these articles on hdparm and they helped a bit -- still not able to boot from it, but it's at least running faster than my old ATA66 drive. http://linux.oreillynet.com/pub/a/li...29/hdparm.html http://www.linuxnetmag.com/en/issue7/m7hdparm1.html
And, of course, the man page index where you can look at the man pages online that are already in your system (but are easier in the browser for some reason): http://www.rt.com/man/
I'm running 2.6test9 on a slackware 9.1 installation. I'm able to see, read and write with the SATA drive, though I think it's only being used as ATA133. Just can't boot from it. If you conquer that one, let me know.
Good luck,
Sorry it took so long for me to reply. I was trying out a couple of different distros with my new box (Knoppix and Libranet) and just reinstalled the 2.6test9 kernel on top of Slackware 9.1 and reran the hdparm tests.
With my Seagate 80 gig drive, 8mb cache, I got 644.81 mb/sec on cache reads and 55.66 mb/sec on disk reads.
For comparison, on my Maxtor 20 gig ATA66 drive, 2mb cache, I got 642.17 for the caches and 23.53 for the disk reads.
Neither seems likely to light a cable on fire any time soon, but at least the SATA drive is showing up and showing more than twice as fast as my ATA66 drive. I guess the results are about 1/3rd of advertised for both? Unless I don't understand the scores, which is possible.
Just for info, it's a very new box. It's a biostar IDEQ (small form factor) 200v with the via southbridge SATA. I'm running a 2800+ CPU and 1 gig of PC2700 RAM.
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