Cause:

Contents in CD/DVD media mounted on Debian Linux systems do not have execution permissions by default. Hence, any scripts/programs being run directly from media mounted in this way will not run because of lack of execution permissions.

Workaround:

1) If the medium is not mounted with execution permission by default, then it needs to be remounted with proper execution rights by issuing a command:

"mount -o remount,exec /media/cdrom0"

OR

2) Copy the contents from CD/DVD media on to the local disk, then provide execution rights using the command:

chmod -R +X ./


Note: Scripts/programs can be launched after performing either of the two steps listed above.