I normally just back up the home directory. When you do a clean install, partition manually. Make a swap partition of at
least twice the size of your RAM. I use 3 GB. Make a partition of about 20-40 GB for your root directory and give it a mount point of / . Use the rest of the drive (if you want) to make a home partition and give it a mount point of /home . In future upgrades, do NOT format this partition. In case of problems, of course, always back up BEFORE you do anything else.
When you do clean installs, your / partition can be formatted or not. If you don't format every time, the information in the directories will be lost anyway.
I like to format my / partition and not format my /home partition. Some of your special apps will be lost, but your configs will be just fine as they are in /home. Just re-install the apps with Synaptic as you need them
This works well for me. your and other's results may be different.
Dave
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