It seems to be the sum of all disk capacities. If that's not what you see then please:
1. Tell us how much it reports for you. 2. Run: lsblk > blk.txt and attach the resulting text file here. ** Changed in: gnome-control-center (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1908348 Title: Disk capacity in "about" section of the gnome-control-panel Status in gnome-control-center package in Ubuntu: Incomplete Bug description: Disk capacity in "about" section of the gnome-control-panel always shows internal computer disk space available but not the disk where Ubuntu is executed. I am executing Ubuntu from and external drive. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-control-center 1:3.36.4-0ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73 Uname: Linux 5.4.0-58-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Dec 16 06:35:52 2020 InstallationDate: Installed on 2020-10-26 (50 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1908348/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp