NextCloudPi - USB disk space external HDD not accessible - only microSD card

Dear Community,

I am new to the raspberry world and I try to set up my own cloud with NextClodPi.
Overall it seems to be good and the cloud works perfectly.

But I have a problem with my external USB Drive. I need support and I would be very grateful if you could help me.

The problem:

I set up the Nextcloud completely, formated and mounted the USB drive but there is always less space and the 4 TB are not really accessible. This means I only have 25,5 GB free space of the SD card instead of >3,64GB incl. the external USB drive - please have a look on the screenshots.

My configuration:

  • Raspberry Pi 4 B
  • 32GB Sandisk Extreme MicroSD
  • 4TB WD Red


What I have to do to get the full disk space of the USB drive?
Did I something wrong or have I overseen something?

Please let me know if you need additionally information.

I really thank you very much in advance for your help!

Best regards

use the ncp tool nc-datadir to move the data to


It is available through ncp-config (cli) or ncp-web (localIP:4443)

1 Like