DMA setting won't save

willywonka · 04-11-2003, 02:38 AM

I'm running Slackware 9.0, and I have:

hdparm -X66 -c3 -d1 /dev/hda
in my /etc/rc.d/rc.local

When linux loads, it works reads that DMA is on, but when I log in and type:
hdparm -Tt /dev/hda
I get really crappy speed, and when I type
hdparm /dev/hda
DMA is turned off, but when i turn it back on again, then it works fine.

Anybody know why I would have to type 'hdparm -X66 -c3 -d1 /dev/hda' again when linux starts?

lynch · 04-11-2003, 04:59 AM

How did you enter the command in /etc/rc.d/rc.local?
Post a copy of the file.
lynch

Shak · 04-11-2003, 06:21 AM

You might want to add the -k switch on that line for hdparm to make sure it lasts over the drives resets. This will prevent any resets in the course of the system running.

Shak

neenee · 04-11-2003, 06:28 AM

-k1 even, but i guess that's obvious.

Shak · 04-11-2003, 06:34 AM

Well a "man hdparm" would have sorted that out anyway, which I trust he's done

Shak

willywonka · 04-11-2003, 01:55 PM

I have tried -k1 option, so that it will keep in rc.local, but this is what I have now in rc.local
-------------------------
#!/bin/sh
#
# /etc/rc.d/rc.local: Local system initialization script.
#
# Put any local setup commands in here:

mount -t smbfs -o username=guest -o password=none, //server/server /server
hdparm -d1 /dev/hdc
hdparm -d1 /dev/hdd
hdparm -X66 -d1 /dev/hda
------------------------

Might also mention that the DMA on the CD-RW and DVD drive work just fine

willywonka · 04-12-2003, 07:37 PM

Problem solved, I just did -X69 instead of -X66, and now it works

Don't know why I did -X66, 2X faster now anyway