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I am newbie. I upgraded from 12.04 to 12.10 using "sudo do-release-upgrade -d". Now, I am not able to get the system to boot up. Is there a way of reversing this and re-installing 12.04? Kindly help.

RamP
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1 Answers1

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No, you can't revert to 12.04 if you haven't made a backup.

You have two options:

  1. Tell us what error message you get, so we can troubleshoot the issue and get 12.10 into a working state.
  2. Reinstall 12.04 from live media.
LiveWireBT
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  • When I switch on, the screen is blank, and if I try recovery mode, it asks me for login and pw and upon entering, i don't get the regular login screen. Can you help? – RamP Oct 09 '13 at 10:19
  • I have a bootable USB with 12.04. I don't mind re-installing. Could you direct me on how to install it? – RamP Oct 09 '13 at 10:21
  • Did you install proprietary graphics drivers? Those might be the culprit, but I'm not shure. I would suggest running sudo `apt-get update` and `sudo apt-get dist-upgrade` that should update and install packages and might show if some packages were not properly installed. Running `sudo update-initramfs -u` may also help in case of a broken initrd.img. At last you could try to boot the old 12.04 kernel from Grub menu, that may still be good. – LiveWireBT Oct 09 '13 at 10:35
  • Thanks. I tried sudo apt-get update. Result: "could not resolve in.archive.ubuntu.com and others like "failed to fetch..." Finally, "some index files failed to download. They have been ignored,or old ones used instead" – RamP Oct 09 '13 at 10:44
  • Me not knowing much of the commands, i do not want to get in further risk. Could you help me in re-installing 12.04. I am happy with this version. I have a bootable USB with v.12.04 – RamP Oct 09 '13 at 10:58
  • Re-installation is no different from normal installation. – LiveWireBT Oct 09 '13 at 11:21