Upgrading to Ubuntu 11.10

Ubuntu 11.10 came out last Thursday. Codename: Oneiric Ocelot.

I will be upgrading using the “Alternate CD/DVD upgrade”. This way I don’t depend on Ubuntu servers during the upgrade.

Upgrading

• Backup, backup!
• Be sure you have the latest updates prior to this new release:

1sudo apt-get update
2sudo apt-get upgrade

• Download the alternate iso image. In my case was the 64bit version (ubuntu-11.10-alternate-amd64.iso).
• Check the hash of the downloaded file:

1md5sum ubuntu-11.10-alternate-amd64.iso

• Compare the output with the Ubuntu hash list:

5e427f31e6b10315ada74094e8d5d483 ubuntu-11.10-alternate-amd64.iso

• Mount the iso file as a cdrom:

1sudo mkdir -p /media/cdrom
2sudo mount -o loop ~/Desktop/ubuntu-11.10-alternate-amd64.iso /media/cdrom

• Run the installer:

1gksu "sh /media/cdrom/cdromupgrade"

You can find more on how to upgrade to Oneiric in Ubuntu website.

Problems upgrading

In both my machine and my girlfriend’s the upgrade failed. Something to do with LightDM.

I believe the problem was the LightDM installation we both did in Ubuntu 11.04 that never worked.

Basically I can’t get past the boot process and Ubuntu won’t start.

I could have tried and solve this, but I just did a fresh install instead. New post coming.