Thanks for the help Ray... To answer your questions: I'm using a Plextor 24X with the command, 'cdrdao write toc.file', and I'm burning a mix of isos and music cds. Under Windows, this process never seemed to take more than three and a half minutes, but with Linux, average burn times hover around four and change. Now I know, thirty seconds isn't much to whine over, but I was just curious to see if it was something I had failed to do. I read both the CD-ROM HOW-TO, and the CD-Writing HOW-TO, but I must have missed the illuminating section.
More interestingly, the burner I have at work is a generic Lite-On 24/10/40, and it usually takes anywhere from 8-10 minutes to burn a cd, under both Windows and Linux. I never gave it much thought, however, because hey I'm at work, and I might as well take the opportunity to grab a coffee and a cigarette. Dave. Ray Olszewski wrote: > Even though you have scsi emulation enabled, there is an ide driver > hidden in the demimonde of your system that the scsi emulator > communicates through. It is the ide driver, the part that actually talks > to the hardware, that either has DMA on or off. > > Almost surely, the message you are seeing means that DMA is off. To > check it, run "hdparm /dev/hdc" and see that the resulting report says > about DMA. If you want to turn it on, run (as root) "hdparm -d 1 > /dev/hdc". If you always want it on, add that line to one of the > system's init scripts (probably whatever corresponds to rclocal on your > system). > > Now I am not at all sure about this next part ... but I doubt that the > DMA setting is what is making your CD burns slow. How are you burning > (what is the actual command-line string you send)? What speed is your > drive? How long is it taking to burn (your "a little slow" could be > someone else's "fast")? What are you burning (iso images? copies of > music CDs? VCDs?) > > At 04:57 PM 8/19/02 -0500, David Yeu wrote: > >> Hi everyone, >> >> I have SCSI emulation on my CDR drive in order to burn and the like, >> but I was confused by the following entries in /var/log/messages... >> >> ---------------------------------------------------------------------- >> Aug 5 12:18:48 localhost kernel: SCSI subsystem driver Revision: 1.00 >> Aug 5 12:18:19 localhost rc.sysinit: Setting clock (localtime): Mon >> Aug 5 12:18:13 UTC 2002 succeeded >> Aug 5 12:18:49 localhost kernel: scsi0 : SCSI host adapter emulation >> for IDE ATAPI devices >> Aug 5 12:18:19 localhost rc.sysinit: Loading default keymap succeeded >> Aug 5 12:18:49 localhost kernel: Vendor: LITE-ON Model: LTR-24102B >> Rev: 5S0J >> Aug 5 12:18:19 localhost rc.sysinit: Setting default font (lat0-sun16): >> succeeded >> Aug 5 12:18:49 localhost kernel: Type: CD-ROM ANSI SCSI >> revision: 02 >> Aug 5 12:18:19 localhost rc.sysinit: Activating swap partitions: >> succeeded >> Aug 5 12:18:49 localhost kernel: hdc: DMA disabled >> ----------------------------------------------------------------------- >> >> The last line says that DMA is disabled, but it refers to hdc. Since >> my /dev/cdrom is linked to /dev/scd0, and /dev/cdrecorder is linked >> to /dev/sg0, does that mean DMA is working anyhow? How can I tell? >> >> (I was prompted into peeking around after burning seemed a little >> slow..) - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
