Hi A few weeks back, I purchased a new Lite-On 52x52x24 EIDE/ATAPI CD-RW drive, which supports a buffer underrun technology Lite-On calls BURNproof (or something similar).
When I first tried to write a CD image using cdrecord, I was highly disappointed that I was only able to successfully write CDs at about 24 speed (any higher any cdrecord would generate error messages, and the CD would be corrupt). My CD-RW drive is the secondary slave on the IDE bus, making it /dev/hdd by default. I also have a CD-ROM drive as master on the same channel, making it /dev/hdc. I decided to experiment a little to see whether I could improve the CD writing speed. After configuring the CD-ROM drive (hdc) to also use IDE-SCSI emulation (as the CD-RW must), I was able to successfully write CD images at 48 speed (the highest speed supported by my CD-Rs) with no BURNproof idle periods (the light goes yellow when it's buffering and not writing as it did often when the CD-ROM was using IDE, but it now stays constantly red). Has anybody else noticed such performance differences? Any ideas why this might happen? If further evidence can be put forward that agrees with my experiences, I would recommend to Red Hat that the installer configures all CD-ROM devices (or at least those on the same IDE channel as the CD-RW device) as IDE-SCSI devices. -- Michael Wardle <[EMAIL PROTECTED]> Adacel Technologies -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
