I freshly set up Ubuntu, and formatted the whole disk with the btrfs file system. When I look at the mount point in gparted, /dev/sda5 is mounted both at / and /home. Is this a problem?

This did not occur before - /dev/sdaN was just mounted at /.


If you used btrfs while installing, then a btrfs subvolume is created for /home (usually named @home). See Btrfs subvolumes vs folders? for more about subvolumes. It shouldn't be a problem, subvolumes are a nice feature of btrfs.


You probably created extended partition. This can hold multiple logical partitions. If so, then all is OK.

For clarification: What does the term "Extended Partition" mean? Is it safe to use this type of partition?

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