Fix 2496 - umounting all partitions #2498
Merged
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This fixes #2496
I was able to reproduce the problem on the latest master and with this change it seems to be fixed.
The problem is that during the partitioning/formatting the
umount_all_existing
is called multiple times, even after existing partitions have been deleted already which results in trying to umount these deleted partitions as a old reference object is used.There shouldn't be any need to call the umount each time a partitioning or formatting is performed but only once for each disk involved.