You can use persistence like follows:
1. When you install Ventoy, reserve some space at the end of the USB disk (e.g. 8GB)
https://www.ventoy.net/en/doc_disk_layou...erve_space
2. After install Ventoy, create partition 3 with the reserved space and format it in ext4/xfs filesystem and set its label to casper-rw
3. Boot ubuntu without persistence from Ventoy, then ubuntu will auto use the partition 3 as persistence.
1. When you install Ventoy, reserve some space at the end of the USB disk (e.g. 8GB)
https://www.ventoy.net/en/doc_disk_layou...erve_space
2. After install Ventoy, create partition 3 with the reserved space and format it in ext4/xfs filesystem and set its label to casper-rw
3. Boot ubuntu without persistence from Ventoy, then ubuntu will auto use the partition 3 as persistence.