I have created an Ubuntu Live CD. I succesfully verified the sha256 sum of the .iso file using the intructions here: https://help.ubuntu.com/community/HowToSHA256SUM
The problem is the next part on the page above which is to "Check the CD". After I burn the .iso I follow the instructions and enter sha256sum /dev/cdrom in terminal
Then I check the output against the Ubuntu Hashes page except the output doesn't match. It is quite a bit longer than the ones listed on the page. Am I checking in the write place? Need some help with this.
They also mention a way of checking the integrity of the CD when you boot it: "So far so good, you have downloaded an iso and verified its integrity. When you boot from the CD you will be given the option to test its integrity."
I do not see this option at all.
Any help appreciated.