How do I set the Ultra ATA from 33 to 100? When I try hdpram anything I get soemthing alon gthe lien of hdpram not found?

Try hdparm - as root.

j.

Hi
i think you have to install the hdparm from rpm,
it wasn't on my mdk 8.2 initially
Surprisingly tho, the drive was already set to its
maximum performance, when i did a hdparm -tT,
without tweaking parameters myself.
regards

The man page for hdparm indicates that most modern drives default to their fastest speed. That's why the docs indicate that the -X flag is "dangerous".

j.

hdparm -i will show you what the drive is actually currently running at. Dmesg isn't entirely accurate:

root@wurlitzer:/home/bob# hdparm -i /dev/hda

/dev/hda:

Model=ST34342A, FwRev=0.42, SerialNo=VGC37326
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=8894/15/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=128kB, MaxMultSect=16, MultSect=off
CurCHS=8894/15/63, CurSects=8404830, LBA=yes, LBAsects=8404830
IORDY=on/off, tPIO={min:383,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio3 pio4
DMA modes: mdma0 mdma1 *mdma2
UDMA modes: udma0 udma1 udma2
AdvancedPM=no
Drive conforms to: unknown: 0 1 2

In this case, small old drive, mdma2 is flagged "*" as the current setting. Most likely if your adapter can do ATA100, not just the drive, it should be running in UDMA5.

Cheers,

Finegan

I have a problem just turning DMA on.

Hdparm shows that udma6 is set, and everything else seems to be OK, but dma isn't on.

If I try to set dma with hdparm -d /dev/hdb I get an error saying:

HDIO_SET_DMA failed : Operation not permitted.

I've just applied the latest VIA ATA driver patch, seemed to install OK but didn't make any difference.

Get transfer speed of about 7MB/Sec

It's a Maxtor HD, on RH7.3
Athlon XP 2000+
MSI KT3 Ultra-ARU

Any ideas? Thanks for any help.
T

Ok, I got hdparm installed and I checked my HD i get 19.05 MB/sec is this good? I am looking to speed up my linux machine, and first thing I thought of was this.

Wohoo upgraded to 2.5.38 kernel and enabled ATA133, 40MB/Sec

what did you do to enable it?

I'm assuming, because I did something similar: make menuconfig,

ATA/IDE/MFM/RLL support --->
IDE, ATA and ATAPI Block devices --->
-- IDE chipset support/bugfixes
And compile in your chipset, as part of the kernel of course.

Most of the beta drivers in the 2.5.x series for the PDC and HPT ATA100/133 cards are a lot faster than their stable series counterparts, although they usually get ported into stable within a version or 3 of being in 2.5.x. I think kernel support for the PDC200276(5?) is going to wander into 2.4.20 for instance.

I got a lot more performance with the 2.5.35 driver for my HPT370 than the one in 2.4.18.

Cheers,

Finegan