How to set up all local disks in initial backup?

2

Found this in related topic:

The ALL parameter only works for the image backups and not for file backups. I’ll consider adding it for file backups as well. Meanwhile there is a hidden feature to not stop on index errors of a directory.
You have to give the backup folder a name and append /optional . That is for example
C:\|C/optional;D:\|D/optional;E:\|E/optional.

Will try it.