A way to check if there is a dvd-ram in the device

[svnhunix]

Hello

I was looking for a simple check (command) to see there is a dvd-ram (or other media) in the /dev/cdx.
For example, with a tape drive I would do a rewind. If that command goes well, there is a tape available in the drive. I would like to be able to do something simular with a CD/DVD.

Steven

 

[p5wizard]

What if you read 1 block of data from the device and check result code?

[tt]dd if=/dev/cd0 of=/dev/null bs=512 count=1 2>/dev/null
if [ $? -ne 0 ]
then
echo empty
fi[/tt]

(I have not tried that out, mind you)


HTH,

p5wizard

 

[svnhunix]

Thank you, this works for me.

Steven

 

[p5wizard]

Try it also with an empty DVD-RAM disk though.

HTH,

p5wizard