Throwing away old Toshiba laptops, I pulled out their slimline DVD-RWs, thinking I might use them in a couple of older PE2850s that I have. So, I pulled the CD-ROM out of a PE2850, replaced the CD in the carrier with a DVD-RW, and slid it into place. On boot, the BIOS told me "CD-ROM drive 0 not found." I tried a second DVD-RW, same result.
Do I have to only use optical drives provided by Dell? The things seem pretty interchangable to me. Or is there some firmware update required for the server to use a DVD?