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How to access "hidden" partition?

Hi, I reinstalled my Fedora 23 today and made a mistake in the process: originally, I had the following partitions:

/
/boot
/home
swap

My intent was to reformat /, /boot and swap, and leave /home alone: I used Anaconda, which displayed the empty new Fedora installation (as expected) and the existing Fedora installation with the above partitions; I then selected /, checked the "reformat" checkbox, validated and got / moved from the existing to the new installation. All good. Same for /boot and swap. For /home, essentially same process, without checking the "reformat" box.

And launched the installation. Something must have gone awry, because now I can't see my /home partition ! Here is what I see:

[root@chaplin ~]# df -kh
Filesystem                      Size  Used Avail Use% Mounted on
devtmpfs                        3.9G     0  3.9G   0% /dev
tmpfs                           3.9G  408K  3.9G   1% /dev/shm
tmpfs                           3.9G  1.4M  3.9G   1% /run
tmpfs                           3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/vg_chaplin-lv_root   40G  3.9G   34G  11% /
tmpfs                           3.9G  100K  3.9G   1% /tmp
/dev/sda3                       477M  111M  337M  25% /boot
tmpfs                           794M  8.0K  794M   1% /run/user/42
tmpfs                           794M   32K  794M   1% /run/user/0

Previously, I would have had an extra line:

/dev/mapper/vg_chaplin-lv_home  xxG  xxG   xxG  xx% /home

This partition /home was about 900 Gb. My feeling is that somehow Anaconda "forgot" to reuse the old /home; and that maybe this old /home is still accessible. My question is: how can I access it?