[SOLVED] Is there a way to discern if a drive is a dvd/cd/blueray drive without a disc inside?

Is there a way to discern if a drive is a dvd/cd/blueray drive without a disc inside?

After looking at this question here: Get all DVD drives in Java

It seems to me that with JAVA 7 there is a way to discern between hard drives and dvd/cd drives when there is cd/dvd inside the drive. But that one method fails if the drive is empty.

My question is: Is there now 4 years later a method to discern which of the drives are hard drives and which are cd/dvd/blueray drives even if those drives have no cd/dvd/blueray inside?

Edit: The target OS for this is Linux

Solution

Can you run system commands, or must this be pure Java? If you can run system commands, try:

Runtime.getRuntime().exec("more /proc/sys/dev/cdrom/info");

This will give you something like:

CD-ROM information, Id: cdrom.c 3.20 2003/12/17

drive name:     sr0
drive speed:        24
drive # of slots:   1
Can close tray:     1
Can open tray:      1
Can lock tray:      1
Can change speed:   1
Can select disk:    0
Can read multisession:  1
Can read MCN:       1
Reports media changed:  1
Can play audio:     1
Can write CD-R:     1
Can write CD-RW:    1
Can read DVD:       1
Can write DVD-R:    1
Can write DVD-RAM:  1
Can read MRW:       1
Can write MRW:      1
Can write RAM:      1

For more comprehensive info, you could run:

Runtime.getRuntime().exec("hwinfo --cdrom");

In there should be a line like:

Feature: CD-R, CD-RW, DVD-R, DVDRAM

If you have a blu-ray drive in the system, I would expect BDROM, BD-ROM, BD-R, BD-RW or something similar