after my installation of Obarun, it gave me an alert that the root partition is full, checking I noticed that the home folder is duplicated in the root and in the home partition, I have verified this by creating a folder in the root partition and it was also created in the home partition, what could be the cause of this problem? I will appreciate your help.
I have no idea. This is the very first time that i heard thing like this. Maybe some Obarun user can help on that
Let's say /home partition is sda5 and root partition is sda4
You boot partition sda4 and sda5 is mounted on /home
How do you see the /home in sda4? You umount /sda5?

1 Show us the fstab
2 Do you have automounting installed gvfs udisks2 udiskie etc.
3 Did you have /home mounted on /mnt during installation, as " mount /dev/sda5 /mnt/home"
oleivac@ olc-obarun ~ % cat /etc/fstab
# /dev/sda3
UUID=36de5b94-d161-4ee4-b647-aac2166020be / ext4 rw,relatime 0 1

# /dev/sda1
UUID=8556-3998 /efi vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro 0 2

# /dev/sda4
UUID=9da6a94c-776a-421a-b186-094e317764ae /home ext4 rw,relatime 0 2

# /dev/sda2
UUID=be056415-e7a8-4746-ae86-a2df9bcbcb61 none swap defaults 0 0
post output of
$lsblk -l -f
I have installed the OS again, here the data
oleivac@ hp-obarun ~ % lsblk -l -f
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
sda
sda1 vfat FAT32 76BF-0D30 510.8M 0% /efi
sda2 swap 1 350c2ac4-6df8-4c53-8c57-aebe03fa3eae
sda3 ext4 1.0 da9bb878-1481-4bd9-9b71-4743ca9d7a2d 65.8G 5% /
sda4 ext4 1.0 111d1971-fdca-49a0-a45b-045397fbfe63 122.3G 0% /home
sdb iso9660 obarun-JWM-2022.06.08 2022-06-08-11-33-51-00
sdb1 iso9660 obarun-JWM-2022.06.08 2022-06-08-11-33-51-00
sdb2 vfat FAT16 OBARUN_EFI 7DAD-8134
Is it still happening after the re-install?
yes, I have tried with 2 folders created and they are created in the two partitions
with the information of the partitions do you see something anomalous?
I understand that the home folder is independent of the root, in which there is also a home folder.
oleivac wrotewith the information of the partitions do you see something anomalous?
No, I didn't see anything wrong.

Try these steps,
$df -h

$dd if=/dev/zero of=~/foo bs=4M count=5120

$df -h
Post the results here. 
$rm ~/foo
oleivac@ hp-obarun / % df -h
Filesystem Size Used Avail Use% Mounted on
dev 3.9G 0 3.9G 0% /dev
run 3.9G 5.0M 3.9G 1% /run
/dev/sda3 74G 5.3G 65G 8% /
tmp 3.9G 0 3.9G 0% /tmp
cgroup 3.9G 0 3.9G 0% /sys/fs/cgroup
shm 3.9G 0 3.9G 0% /dev/shm
/dev/sda1 511M 160K 511M 1% /efi
/dev/sda4 130G 1.2G 122G 1% /home
user 64M 8.0K 64M 1% /run/user/1000
oleivac@ hp-obarun / % dd if=/dev/zero of=~/foo bs=4M count=5120
dd: failed to open '~/foo': No such file or directory
oleivac@ hp-obarun [1] / % dd if=/dev/zero of=~/foo bs=4M count=5120
dd: failed to open '~/foo': No such file or directory
oleivac@ hp-obarun [1] / % df -h
Filesystem Size Used Avail Use% Mounted on
dev 3.9G 0 3.9G 0% /dev
run 3.9G 5.0M 3.9G 1% /run
/dev/sda3 74G 5.3G 65G 8% /
tmp 3.9G 0 3.9G 0% /tmp
cgroup 3.9G 0 3.9G 0% /sys/fs/cgroup
shm 3.9G 0 3.9G 0% /dev/shm
/dev/sda1 511M 160K 511M 1% /efi
/dev/sda4 130G 1.2G 122G 1% /home
user 64M 8.0K 64M 1% /run/user/1000
oleivac wroteoleivac@ hp-obarun / % df -h
Filesystem Size Used Avail Use% Mounted on
dev 3.9G 0 3.9G 0% /dev
run 3.9G 5.0M 3.9G 1% /run
/dev/sda3 74G 5.3G 65G 8% /
tmp 3.9G 0 3.9G 0% /tmp
cgroup 3.9G 0 3.9G 0% /sys/fs/cgroup
shm 3.9G 0 3.9G 0% /dev/shm
/dev/sda1 511M 160K 511M 1% /efi
/dev/sda4 130G 1.2G 122G 1% /home
user 64M 8.0K 64M 1% /run/user/1000
oleivac@ hp-obarun / % dd if=/dev/zero of=~/foo bs=4M count=5120
dd: failed to open '~/foo': No such file or directory
oleivac@ hp-obarun [1] / % dd if=/dev/zero of=~/foo bs=4M count=5120
dd: failed to open '~/foo': No such file or directory
oleivac@ hp-obarun [1] / % df -h
Filesystem Size Used Avail Use% Mounted on
dev 3.9G 0 3.9G 0% /dev
run 3.9G 5.0M 3.9G 1% /run
/dev/sda3 74G 5.3G 65G 8% /
tmp 3.9G 0 3.9G 0% /tmp
cgroup 3.9G 0 3.9G 0% /sys/fs/cgroup
shm 3.9G 0 3.9G 0% /dev/shm
/dev/sda1 511M 160K 511M 1% /efi
/dev/sda4 130G 1.2G 122G 1% /home
user 64M 8.0K 64M 1% /run/user/1000
Looks like your user's home directory is not set up properly. You can check it by
$grep oleivac /etc/passwd
&& 
$xdg-user-dir oleivac
If that's the case, consider using "usermod" to re-configure your $HOME and then run,
$xdg-user-dirs-update --force
to populate xdg user sub dirs. Good luck!
ok, I'll check what you tell me, anyway it seems strange to me, since the installation is done with the iso guide it has.

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