lkml.org 
[lkml]   [1999]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: UDMA issues under 2.2.3
"Nicholas J. Leon" wrote:
> According to hdparm -I, all of my drives are in UDMA mode2. Which they
> shouldn't be; because I have the "use UDMA by default" DISABLED (my system
> will lock up if I attempt to access two drives in UDMA mode at the same
> time - as in a parallel fsck).

You need to run this command immediately: "man hdparm"

> root(2)@neko [104 /usr2/root] # hdparm -I /dev/hda

Bzzt! Wrong. Try: hdparm -d /dev/hda
...
> This is the default. Everytime I use hdparm, I get the errors. Also...
>
> root(2)@neko [105 /usr2/root] # hdparm -d0 -I /dev/hda
>
> /dev/hda:
> setting using_dma to 0 (off)
> hda: DMA disabled
> using_dma = 0 (off)
> hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
> hda: drive_cmd: error=0x04 { DriveStatusError }

Ignore that error -- triggered by hdparm, so it's really self-inflicted.
And totally harmless.

..
> Also, if I do something like
>
> hdparm -X34 /dev/hda
> or
> hdparm -X66 /dev/hda
>
> my system will crash within seconds.

You should not be playing with those options.
Or at least do "man hdparm" first, and read the output thoroughly.
--
mlord@pobox.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:50    [W:0.040 / U:2.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site