William L. Maltby wrote: > It's to bad you couldn't continue the prior thread. Would have been > better to have everything in one thread. > OK. I see your point here. > http://lists.centos.org/pipermail/centos/2007-December/091666.html > > On Mon, 2007-12-31 at 00:04 -0500, Robert Moskowitz wrote: > >> First the Storix drive works just fine under DSL 4.2.1 on my Libretto. >> >> So the drive is fine, the media is fine. And cdrecord on DSL reports >> the media to be >> >> Manuf. index: 27 >> Manufacturee: Prodisc Technology Inc. >> >> I have all of ONE system with Centos 4 on it. A Trixbox 2.2; I added >> cdrecord and found that I could burn the iso image ONLY by including the >> -force option to get around the "cdrecord: Cannot get disk type" error. >> >> So I moved back to the Centos 5 system. I had to add the speed=4 (when >> the unit supports speed=8) along with the -force to get it to burn a iso >> image (btw, timeout=100 does nothing. The failure is in a few seconds, >> adding to the timeout changes nothing). There are a number of timing >> errors on the Centos 5 system. Even the Centos 4 system had a SCSI >> error (0x7000). >> >> I did find ONE mention of "cdrecord: Cannot get disk type": >> >> http://crashrecovery.org/oss-dvd/Changelog.html >> >> but that is dated 2/2/06. One would think it is fixed in Centos 5..... >> >> I have NOT gotten the HP CDRW working yet, that is the one I want to >> leave on the server, as the Storix is my traveling drive. More work. >> Any pointers gladly taken! >> >> I REALLY want to move my CD processes to Centos. I want a GUI interface >> and want to rip and burn music CDs as well..... >> > > I reviewed all in my sent box and went to the archives to find the start > of thread that I had not saved. I don't have any more ideas, but did > find one erroneous statement I made. > > >From days past on LFS, when I was very active and less removed from > the professional activities, I can say with certainty that the > sr_mod and ide_cd are for the plain old cd-rom on your IDE channel. > They are not required for the usb stuff. > > The sr_mod *is* needed and I didn't see it in your lsmod output > (probably because I said it wasn't needed?). It is needed. My confusion > was from the fact that I was using the ide cdrw I had at that time as > both scsi and with the newer (at that time) cd stuff that was part of > Linux. > > Anyway, see if an lsmod shows sr_mod. It probably does or the mods that > depend on it should fail to load, or at least they should give error > messages. Never mind! In a later post you show lsmod output and sr_mod > is there. > lsmod|grep sr sr_mod 19941 0 scsi_mod 133069 4 sr_mod,sg,usb_storage,libata cdrom 36705 2 sr_mod,ide_cd > I see ide_cd is loaded too. IIRC, you do have one? Not to seem to > foolish, but I don't recall seeing you use cdrecord with a dev= > parameter. Any chance that the system is accessing the wrong device? > Over with DSL, I learned that they DON'T use the form: dev=/dev/scd0, but rather something like dev=0,0,1 where the 0,0,1 was learned via cdrecord -scanbus. So I have been doing the -scanbus and using things like dev=5,0,0 and I know that I am hitting the CDRW. Interestingly, the first number of the triplet seems to increment every time I unplug and plug back in the CDRW. > I went through each post in the archives in the thread and, using > Firefox's search feature, didn't see a post where you showed a "dev=" > being used with cdrecord. Maybe it's worth a try. Putting a written disc > in the ide one should provoke an automount. Then a mount command would > show what device is mounted. Then an ls would show which symlinks are > pointing to that device. Then you could try cdrecord with a different > one to make sure the correct one is accessed. > definitely using dev= And like I pointed out, with the Storix adding -force speed=4 and it does burn the CD. But the HP drive not. I am thinking next I try a speed=2 with the HP, as I recall it is a 6x writer. > Presuming that you tried all the things people mentioned in the other > thread, the only course I see now is to make sure that the > "configuration" on this box matches what is on the others as closely as > possible. What modules loaded, /etc/cdrecord.conf, symlinks (allowing > for multiple devices or not multiples), GUI config set up correctly > (which device), ... > > The scsi stack needed hasn't changed much in the last few years, as has > not the devices used, config files used, ... The major variables I > (guess I?) see are multiple devices (opportunity for confusion), USB 1.2 > (?), configuration files and related, hardware status (good vs. > failed)... > > Have you, using the same cable and usb port, tried another device? > I have LOTS of cables and use the indiscriminately. I am not careful which USB port I use, and I have done this on a few different computers loaded with Centos 5. I only have the 2 devices, so I am limited there. The Storix is a 'newer' device than the HP, as it is a DVD/CDRW and the HP is only a CDRW. > A reading of Schilly's docs and man page might suggest something we have > overlooked. Schilly's doc? I got tired of trying to read the man page, so found a version of it online: http://man-wiki.net/index.php/1:cdrecord and so far have not found anything else to try.