How to upgrade CentOS 6.9 to 7?

[ March 5, 2018 ]

If this is a real system then don’t bother – there is no safe way to upgrade CentOS 6 to CentOS 7, as the distribution just wasn’t designed to be used that way.

If this is a toy or home system, then back up your data and install CentOS 7 from scratch on the same machine, restoring your data at the end of it.

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