Hi, exfatprogs 1.4.0 changed two things: 1. mkfs.exfat now creates a partition table by default 2. Formating in tune.exfat verbose mode changed The new partition table seems to be the reason for the broken tests e.g. https://ci.debian.net/packages/u/udisks2/testing/amd64/72645693/ Upstream I found the following fix https://github.com/storaged-project/udisks/pull/1526 which passes on the flag to disable the partition table creation.