nemozone

sudo dd if=/dev/cdrom of=image_name.iso status=progress && sync

or

sudo dd if=/dev/sr0 of=image_name.iso status=progress && sync

You can also use isoinfo to determine the block size, example

isoinfo -d -i /dev/cdrom

dd if=/dev/cdrom bs=2048 count=1621535 of=filename.iso status=progress && sync

And no, you can't copy a Windows ISO like this. Well you can but it wouldn't boot. Just download it as an ISO

ISO use Linux instead of Windows :)

If you have installed libdvdcss2 you can also copy commercial DVDs with brasero which is a gray area, please check your laws.