[ubuntu] 9.10 upgrade: cdrom broken

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http://ubuntuforums.org – Upgraded from 8.10 through 9.04 to 9.10 on ibm Thinkpad A22, now CDROM is inoperable. Anybody else have this problem. Empty, it does appear in media, but put in any cd and it disappears. How do I correct this? Prefer guis, but can type in a terminal. Thank you, tedpome. (Hardware)