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Ek314 Ubuntu 12.04 如何升级到14.04？
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有朋友问到：
启动后，出现提示：是否升级到Ubuntu 14.04， 点击升级后，在进行到第二步时出现提示：
W:Failed to fetch http://ports.ubuntu.com/dists/trusty/Release Unable to find expected entry 'main/binary-armel/P, W:Failed to fetch http://ports.ubuntu.com/dists/trusty-security/Release Unable to find expected entry 'main/bin, W:Failed to fetch http://ports.ubuntu.com/dists/trusty-updates/Release Unable to find expected entry 'main/bina, W:Failed to fetch http://ports.ubuntu.com/ubuntu-p ... ty-security/Release Unable to find expected en, W:Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/trusty/Release Unable to find expected entry 'main, W:Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/trusty-updates/Release Unable to find expected ent, E:Some index files failed to download. They have been ignored, or old ones used instead.
板子在启动后已经能够正常上网访问internet。
apt-get update 操作都正常，不知道是不是这个操作系统不能升级？
回复：
可通过更换镜像来包来实现。
启动后，出现提示：是否升级到Ubuntu 14.04， 点击升级后，在进行到第二步时出现提示：
W:Failed to fetch http://ports.ubuntu.com/dists/trusty/Release Unable to find expected entry 'main/binary-armel/P, W:Failed to fetch http://ports.ubuntu.com/dists/trusty-security/Release Unable to find expected entry 'main/bin, W:Failed to fetch http://ports.ubuntu.com/dists/trusty-updates/Release Unable to find expected entry 'main/bina, W:Failed to fetch http://ports.ubuntu.com/ubuntu-p ... ty-security/Release Unable to find expected en, W:Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/trusty/Release Unable to find expected entry 'main, W:Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/trusty-updates/Release Unable to find expected ent, E:Some index files failed to download. They have been ignored, or old ones used instead.
板子在启动后已经能够正常上网访问internet。
apt-get update 操作都正常，不知道是不是这个操作系统不能升级？
回复：
| 一般arm的不这样升级Ubuntu系统 |
