I have a triple-boot system with Windows 10, Debian and Ubuntu.
At first I had only Windows 10 and Ubuntu. Then I installed Debian and I used the same home folder for both Debian and Ubuntu. It was mistake (see here for the drawbacks of doing a such thing: Different linux distros sharing the same /home folder?). And now I would like Debian to use its own home folder.
The output of sudo fdisk -l :
Disque /dev/sda : 698,7 GiB, 750156374016 octets, 1465149168 secteurs
Unités : sectors of 1 * 512 = 512 octets
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Device          Start        End   Sectors  Size Type
/dev/sda1        2048     616447    614400  300M EFI System
/dev/sda2      616448    2459647   1843200  900M Windows recovery environment
/dev/sda3     2459648    2721791    262144  128M Microsoft reserved
/dev/sda4     2721792  587857919 585136128  279G Microsoft basic data
/dev/sda5   587857920  588779519    921600  450M Windows recovery environment
/dev/sda6   588779520  661491711  72712192 34,7G Microsoft basic data
/dev/sda7  1410834432 1423183871  12349440  5,9G Linux swap
/dev/sda8  1423183872 1465147391  41963520   20G Windows recovery environment
/dev/sda9   731428864 1410834431 679405568  324G Linux filesystem
/dev/sda10  661491712  731428863  69937152 33,4G Linux filesystem
Partition table entries are not in disk order.
- On sda6 is the root folder for Ubuntu
 - On sda10 is the root folder for Debian
 - On sda9 is the home partition.
 
What is the easiest way to have a fresh home directory for my Debian install? I don't mind if the home directory is located in the same partition as the Debian files.