【Solved】How to mount ventoy partition ?

[longpanda]

In the future release, I will provide an option for read-only or rw.

If choose read-only (default is read-only), device-mapper will be used in the backend.
If you really need to write something into the partition 1 during install OS. you can choose rw,  then fuse will be used in the backend.

Device-mapper performs much better than fuse.

Besides, if you use exFAT or NTFS for partition 1, you must confirm that the disto you use can mount this partition.