You can also show available mounts with showmount -e IP_of_the_NFS_server like showmount -e 192.168.178.200
If there is no output, the share is not available. If there is some output, mount the drive with dietpi-drive_manager, select “Add network drive” and just follow the steps.
If there is no output you have to check your /etc/exports again at your ubuntu nfs server.
got it. I found the drive hosted in the Ubuntu server, mounted it, and backup the system.
Just another piece of information about the daily backup:
is it enough if I activate it in this way Daily Backup : [On] Daily backups via cron job ?
Does it mean every day the system will be back up? at what time it is going to back up?
Yes
Yes
usually backup should be done together with the daily job execution. You can check the schedule using dietpi-cron
thanks @Joulinar .
In the daily job execution I can read cron.daily : Every day at 01:25 this means every day at 1:25 am it will execute the backup. Is this correct?
Another thing I notice on the backup page:
even if I’ve already made the backup (some hours ago), in the upper part of the dietpi-backup screen, I read: - Backup not found. Please create one.
This is strange? isn’t it?
correct
It depends on what target directory is shown within dietpi-backup. Theoretically you could try to search the backups
mmmm not sure how. IN the backup page I can see only where, but not fi there is one
go to Location and Search for backups.
done and found the right backup… last night around 1:30 
.
This means it is working properly.
Thanks again 