On Sat, 30 Oct 2004 18:17:04 +0000, "Jon Cortelyou"
wrote in
:

> First I have to type: hdparm -d1 /dev/hdb
> this turns on UDMA2 for my DVD-ROM
> Where would I put this command so it is done automatically at boot up?

Create a small script like this:

--begin--
#!/bin/sh
hdparm -d1 /dev/hdb
--end--

And save it in /etc/init.d
After that, create symlinks to /etc/rc{1,2,3,4,5}.d/

--
Kind regards, | Jabber : michel@jabber.xs4all.nl (MSN/ICQ in headers)
| Website: http://michel.klijmij.net/
| GPG key: 0x8A43CF30
Michel Klijmij | E-mail : michel@klijmij.net

Hi Michel,

Cool thanks.


"Michel Klijmij" wrote in message
newsan.2004.10.31.16.34.38.59636@imac.klijmij.net...
> On Sat, 30 Oct 2004 18:17:04 +0000, "Jon Cortelyou"
> wrote in
> :
>
>> First I have to type: hdparm -d1 /dev/hdb
>> this turns on UDMA2 for my DVD-ROM
>> Where would I put this command so it is done automatically at boot up?
>
> Create a small script like this:
>
> --begin--
> #!/bin/sh
> hdparm -d1 /dev/hdb
> --end--
>
> And save it in /etc/init.d
> After that, create symlinks to /etc/rc{1,2,3,4,5}.d/
>
> --
> Kind regards, | Jabber : michel@jabber.xs4all.nl (MSN/ICQ in headers)
> | Website: http://michel.klijmij.net/
> | GPG key: 0x8A43CF30
> Michel Klijmij | E-mail : michel@klijmij.net
>

Michel Klijmij writes:
> On Sat, 30 Oct 2004 18:17:04 +0000, "Jon Cortelyou"
> wrote in
> :
>
> > First I have to type: hdparm -d1 /dev/hdb
> > this turns on UDMA2 for my DVD-ROM
> > Where would I put this command so it is done automatically at boot up?
>
> Create a small script like this:
>
> --begin--
> #!/bin/sh
> hdparm -d1 /dev/hdb
> --end--
>
> And save it in /etc/init.d
> After that, create symlinks to /etc/rc{1,2,3,4,5}.d/

Since Ubuntu is Debian-based I expect the right way is to add an entry
like the following to /etc/hdparm.conf:

/dev/hdb {
dma = on
}

I'd also consider trying io32_support=1 and interrupt_unmask = on.

Thomas Jahns
--
"Computers are good at following instructions,
but not at reading your mind."
D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

I tried adding the following to hdparm.conf

/dev/hdb {
dma = on
io32_support = 1
interrupt_unmask = on
}

but dma was 'off' when the machine boots up and I check with: hdparm
/dev/hdb

I tried dma=on without the other parm's but no luck with that either.


"Thomas Jahns" wrote in message
news:87wtx4v0pd.fsf@ID-48333.user.dfncis.de...
> Michel Klijmij writes:
>> On Sat, 30 Oct 2004 18:17:04 +0000, "Jon Cortelyou"
>> wrote in
>> :
>>
>> > First I have to type: hdparm -d1 /dev/hdb
>> > this turns on UDMA2 for my DVD-ROM
>> > Where would I put this command so it is done automatically at boot up?
>>
>> Create a small script like this:
>>
>> --begin--
>> #!/bin/sh
>> hdparm -d1 /dev/hdb
>> --end--
>>
>> And save it in /etc/init.d
>> After that, create symlinks to /etc/rc{1,2,3,4,5}.d/
>
> Since Ubuntu is Debian-based I expect the right way is to add an entry
> like the following to /etc/hdparm.conf:
>
> /dev/hdb {
> dma = on
> }
>
> I'd also consider trying io32_support=1 and interrupt_unmask = on.
>
> Thomas Jahns
> --
> "Computers are good at following instructions,
> but not at reading your mind."
> D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

On Wed, 03 Nov 2004 07:06:54 GMT,
Jon Cortelyou , in
wrote:
>+ I tried adding the following to hdparm.conf
>+
>+ /dev/hdb {
>+ dma = on
>+ io32_support = 1
>+ interrupt_unmask = on
>+ }
>+
>+ but dma was 'off' when the machine boots up and I check with: hdparm
>+ /dev/hdb

Try this:

find /etc -name "S*hdparm" -print

Do you have a hit in /etc/rcS.d/?

James
--
Consulting Minister for Consultants, DNRC
I can please only one person per day. Today is not your day. Tomorrow
isn't looking good, either.
I am BOFH. Resistance is futile. Your network will be assimilated.

Hi Thomas,

Cool. I'll make those changes and see if they'll work. Any chance those
changes will render my machine unbootable?

Thanks,
Jon

"Thomas Jahns" wrote in message
news:87wtx4v0pd.fsf@ID-48333.user.dfncis.de...
> Michel Klijmij writes:
> > On Sat, 30 Oct 2004 18:17:04 +0000, "Jon Cortelyou"
> > wrote in
> > :
> >
> > > First I have to type: hdparm -d1 /dev/hdb
> > > this turns on UDMA2 for my DVD-ROM
> > > Where would I put this command so it is done automatically at boot up?
> >
> > Create a small script like this:
> >
> > --begin--
> > #!/bin/sh
> > hdparm -d1 /dev/hdb
> > --end--
> >
> > And save it in /etc/init.d
> > After that, create symlinks to /etc/rc{1,2,3,4,5}.d/
>
> Since Ubuntu is Debian-based I expect the right way is to add an entry
> like the following to /etc/hdparm.conf:
>
> /dev/hdb {
> dma = on
> }
>
> I'd also consider trying io32_support=1 and interrupt_unmask = on.
>
> Thomas Jahns
> --
> "Computers are good at following instructions,
> but not at reading your mind."
> D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

"Jon Cortelyou" writes:
> I tried adding the following to hdparm.conf
>
> /dev/hdb {
> dma = on
> io32_support = 1
> interrupt_unmask = on
> }
>
> but dma was 'off' when the machine boots up and I check with: hdparm
> /dev/hdb

Did hdparm.conf exist before you edited it? In Debian /etc/hdparm.conf
is part of the hdparm package. Perhaps you could check with

dpkg -l hdparm

if it's installed.

Thomas Jahns
--
"Computers are good at following instructions,
but not at reading your mind."
D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9

"Jon Cortelyou" writes:
> Hi Thomas,
>
> Cool. I'll make those changes and see if they'll work. Any chance those
> changes will render my machine unbootable?
>
> Thanks,
> Jon

Not really unless the device in question does indeed have a flawed DMA
implementation. But as you have already tested this, I can't see why it
should leave your machine unbootable.

Thomas Jahns
--
"Computers are good at following instructions,
but not at reading your mind."
D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9