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When opening the CD it doesn't show all files like music and videos etc except power point files. I installed 11.10 Ubuntu using Oracle virtual monitor host OS is windows 7.

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Do you run 11.10 in an virtualbox? or do you have Ubuntu 11.10 and Windows 7 as a dual boot? your question is very confusing and missleading – Alvar Oct 26 '11 at 15:03
CTRL + H shows you any hidden files, but I think you are having a problem with VirtualBox. Help for that is here: – Tom Brossman Oct 26 '11 at 15:17
It might help us to see a listing of what Windows and Ubuntu each think is on the CD. If you're alright with sharing this information, you can get it by using the tree command: 1) Install Tree for Ubuntu and Tree for Windows. 2) Open the terminal and change directory to the inserted CD, using e.g. e: in Windows and cd /media/cdrom in Ubuntu. 3) Run tree, copy and paste the output into Ubuntu Pastebin, and edit your question here to include a link to it. – ændrük Oct 26 '11 at 15:27

Try the command

mount -o ro,unhide,uid=1000 /dev/cdrom /mnt/cdrom
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