Interrupted Upgrade from Ubuntu 9.10 to 10.04 (Lucid Lynx)
Using Update Manager, I was downloading an upgrade from Ubuntu 9.10 to 10.04 (Lucid Lynx) on my laptop. I had to interrupt it. When I started the laptop again and tried to resume the upgrade, I had problems. For one thing, I wasn’t located in a place with wireless, and my wired ethernet connection was not working. I had already downloaded the remaining upgrade packages at a wireless location, though, so I hoped it would be just a matter of starting the computer and installing those updates. This, unfortunately, was not the case. It seemed I had completely screwed up the Ubuntu kernel, and therefore had to choose an older kernel to install from in GRUB. Then, when I went into System > Administration > Update Manager, I began to learn that my problems had only begun.
What I got, in Update Manager, was this message:
Not all updates can be installed.
Run a partial upgrade, to install as many updates as possible.
I clicked on the Partial Upgrade button. This led to another message:
Broken packages
Your system contains broken packages that couldn’t be fixed with this software. Please fix them first using synaptic or apt-get before proceeding.
I went into System > Administration > Synaptic Package Manager. It said this:
You have 7 broken packages on your system!
Use the “Broken” filter to locate them.
In Synaptic, I went to Edit > Fix Broken Packages. This said:
An error occurred.
The following details are provided:
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages
E: Unable to correct dependencies
I clicked Reload. Synaptic was not able to download package information. I canceled that. I got a new message:
Could not download all repository indexes.
The repository may no longer be available or could not be contacted because of network problems.
I closed that. Synaptic’s status bar said, “30190 packages listed, 1277 installed, 0 broken, 135 to install/upgrade, 7 to remove; 51.6 MB will be used.” That sounded good. I clicked Apply. It asked me, “Apply the following changes?” It had a warning: “You are about to install software that can’t be authenticated!” If it had been one or two items, I might have thought twice, but it was dozens of packages, some of which (e.g., seed) even had community documentation. So I disregarded that warning. Again, Synaptic tried to download package files and couldn’t, and it wouldn’t go any further until that was done. So at this point I hibernated the Ubuntu installation and used the laptop solely in Vista mode until I could work through the ethernet problem or go to a wireless location again to continue.
When I did get back to this situation, I tried a number of solutions but ultimately was not able to recover from the interrupted upgrade process. I therefore started over: I used an Acronis True Image backup to restore Ubuntu 9.10 and then tried the upgrade again from there.
When I did get back to this situation, I tried a number of solutions but ultimately was not able to recover from the interrupted upgrade process. I therefore started over: I used an Acronis True Image backup to restore Ubuntu 9.10 and then tried the upgrade again from there.
1 comments:
you should have used the command:
sudo apt-get dist-upgrade
It picks up from right where it lef off.
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