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Possible Duplicate:
Can I skip over releases?

I tried to upgrade from 11.04 to 12.04 by Update manager, but failed.

The error message was:

Failed to fetch http://kr.archive.ubuntu.com/ubuntu/pool/main/t/ttf-alee/ttf-alee_12+nmu1ubuntu1_all.deb'

How can I fix it?

Community
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Sanghyuk Jung
  • 9

2 Answers2

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You can't upgrade from 11.04 to 12.04. You must upgrade to 11.10 and then to 12.04. You can only skip upgrades if you upgrade from an LTS (10.04) to a LTS (12.04). You can't skip in-between.

I suggest you download an 11.10 image from here. And then upgrades via a usb-stick (live-cd). and then upgrades to 12.04, via the same method.

Alvar
  • 17,038
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I fixed it.

I guess there was a temporarily problem in accessing http://kr.archive.ubuntu.com/ubuntu/pool/main/t/ttf-alee/ttf-alee_12+nmu1ubuntu1_all.deb

I downloaded 'ttf-alee_12+nmu1ubuntu1_all.deb' from a mirror site and install it manually, then completed the online update.

But now 'ttf-alee_12+nmu1ubuntu1_all.deb' is available on 'kr.archive.ubuntu.com'. I guess there is no problem now.

Thank you for all comments.

Sanghyuk Jung
  • 9