无法从12.04LTS升级到14.04LTS
我正在尝试升级到14.04.1 LTS。 它显示：
You have to download a total of 137 k. This download will take about 4 seconds with your connection. Installing the upgrade can take several hours. Once the download has finished, the process cannot be canceled. Continue [yN] Details [d]d Continue [yN] Details [d]y Fetched 0 B in 0s (0 B/s) Could not download the upgrades The upgrade has aborted. Please check your Internet connection or installation media and try again. All files downloaded so far have been kept. Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/g/gcc-defaults/libgcj-common_4.8.2-1ubuntu6_all.deb 403 Forbidden Restoring original system state Aborting... 首先，我认为最好禁用所有第三方存储库，如果有的话。 接下来，您必须使用以下命令更新系统：
sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade
然后，您必须通过终端运行Update Manager以升级到14.04。 打开终端并写下：
update-manager -d
你准备将你的发行版升级到14.04 …… !!!