recover a broken installation

[PIYUSH SINGH]

hi
i am a novice linux user using ubuntu 10.10 . while upgrading from 10.10 to
11.04 my system went down due to power off . i am able to use the system
wiht the command line with root as user and the read only file system . i am
not able to run the do-release-upgrade as the system is read only .
The specs of the system are
compaq Cq45 207 tu
dual core
Please help
thanks in advance

-- 
Piyush Kumar Singh
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