Re: CD-ROM settings and hardware resources...

[Bryan Simmons <bsimmo1@gl.umbc.edu>]

[-- Attachment #1: Type: text/plain, Size: 4117 bytes --]

Another problem, hdparm when run as root like this:
hdparm -ab /dev/scd0
or
hdparm -ab /dev/cdrom

Gives me the error message:
/dev/cdrom[scd0] not supported by hdparm

Does this mean that I have the name of the device wrong or that hdparm
won't parlais with my hardware?


On Sun, 2002-10-20 at 01:46, Bryan Simmons wrote:
> Sorry to all for not being more descriptive.  Here are my specs as far
> as I can tell:
> 1.  Kernel: 2.4.19mdk (Mandrake 9.0)
> 2.  CD-RW: HP CD-Writer+ 9100 (ATAPI)
> ,fs=auto,ro,--,iocharset=iso8859-1,codepage=850,umask=0
> 
> 
> The CDs I'm trying to read were made in Windows (98, 2000, XP) with this
> very same drive about a year ago.  They all contain home-made movies
> that I created in XP.  The range in sizes is 9MB to 200MB.  Now, I have
> never been able to play any of them directly off of the disk in Windows,
> but I have always been able to transfer them from CD to hard disk.  My
> problem in Linux is that the drive "stalls" during a copy or a read of
> the media during playback in xine or kaboodle or xmovie, etc...  It
> would play the first 30 seconds of the film and then stall out.  The
> media program freezes and the drive is locked until I kill the processes
> accessing it.  The same is true when I attempt a copy from CD to hard
> drive in Konqueror.  The copy window says it transfered 4MB and then the
> drive status windows says "stalled" and that's as far as I can get.
> 
> I figure there is a setting in some config somewhere that will get me
> better performance when dealing with CD-R media.  I thought that there
> might be a parallel between the "read ahead" setting in the driver under
> Linux as well as Windoze.
> 
> BTW, I'm NOT pro-Windoze.  I'm trying to set all this up under Linux so
> that I never have to use MS software again.
> 
> Oh, I'm also looking to upgrade my system considerably.  Right now I'm
> running an old AMD Athlon 650Mhz with a 9GB and 20GB two-drive setup.  I
> want something fast and cheap that is Linux approved or Linux friendly.
> Does anyone know of a web storefront that sells such hardware or will I
> have to simply shop with a list of known compatible hardware?
> 
> Thanks in advance guys!
> 
> On Sat, 2002-10-19 at 19:09, Ray Olszewski wrote:
> > I meant to reply earlier but it slipped my mind.
> > 
> > First, it would help to be a bit more descriptive than just to say "has 
> > trouble reading large files". What sorts of files? What sort of trouble? 
> > What application software is involved?
> > 
> > Without that detail, here is just a guess ... under Linux, DMA is not 
> > enabled on the drive (I'm assuming here that this is an ATAPI drive, 
> > another detail you omitted). You can check this (and if need be correct it) 
> > with "hdparm" ... the man page will give you the details.
> > 
> > [...]
> > >On 18 Oct 2002, Bryan Simmons wrote:
> > > > I've noticed that my HP CD-Writer 9100+ has trouble reading large files
> > > > off of a burn under Mandrake 9.0.  This problem doesn't occur in
> > > > Windows.  I think it may be the read-ahead setting.  Does anyone know
> > > > anything about this?
> > [...]
> > 
> > --
> > -------------------------------------------"Never tell me the odds!"--------
> > Ray Olszewski					-- Han Solo
> > Palo Alto, California, USA			  ray@comarre.com
> > -------------------------------------------------------------------------------
> > 
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://www.linux-learn.org/faqs
> -- 
> Regards,
> 
> Bryan Simmons 
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 
>  UFO's are real.  The Air Force is a hoax.
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 
-- 
Regards,

Bryan Simmons 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 
 UFO's are real.  The Air Force is a hoax.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]