Originally Posted by sperug
I've tried to install many debian derivatives (makulu, kwheezy...), but every time I stopped whith the different gparted behaviour. It gives me only the option to format, not to mount a partition! I don't want to overwrite my home! So for the time being, I'm unable to experiment...
I don't know each of those installers, but I think you're right, there's no option to mount existing partitions during installation of Debian derivatives, or if there is, it's well hidden. However, you can work around this.
Let's assume you want to re-install the system, but use and mount an existing partition to /home. At first I'd make a default install, which creates a /home directory in the root file system. Leave all existing partitions alone, do not touch them.
Once the new installation is finished, log in as root and create a user account with same name as previously. Then manually add a line in /ect/fstab to mount the existing /home partition. Run 'mount -a' to mount the extra partition to /home. You may have to chown and/or chgrp all the files in the user's home if the UID and/or GID is different from the previous installation (alternatively you could force a particular UID/GID when you create the user), but that should be all.
If the existing, but now invisible directory /home in the root file system itches your feeling for aesthetics, you can log in as root again, temporarily unmount /home, which will reveal the /home directory created during installation, and then delete the now obsolete contents of that directory.
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PS: A curious question of mine - your stats indicate that this is your first post, but you have been registered since 2009.
What for? Why would one sign up to a service when it's not necessary yet?