I use DVDs to make backups on my Linux system. I've been using cheap DVD drives for a long time, and they've been fine. I can throw in CDs, DVD-R and DVD+R and burn data without any problems at all. (My Macs require DVD-R and not DVD+R, but the cheap drives Linux take either format). I recently replaced my worn out cheap DVD drive on my Linux desktop with a cheap generic Blu-Ray drive. It reads and writes cds, it reads Blu-Ray disks, and tonight I discovered I can't burn DVDs on it. I get this error message
/dev/sr0: media is not recognized as recordable DVD: 0
A quick look through dmesg shows it is recognised as
24x/24x cd/rw xa/form2 cdda tray
where my previous DVD-burner is shown as
48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
The Blu-Ray is missing the dvd-ram clause. I guess that means I can't burn DVD data disks on this drive. Lesson learned - read the specs carefully before buying.