When the clean installation is in progress on 2 disks with RAID-1
After Question "Are you sure you want to do this? " default value "No"
If press enter - that provide Deleteing old partition on both drives anyway.
vyos@vyos:~$ install image Welcome to the VyOS install program. This script will walk you through the process of installing the VyOS image to a local hard drive. Would you like to continue? (Yes/No) [Yes]: Probing drives: OK Looking for pre-existing RAID groups...none found. You have two disk drives: vda 4294 MB vdb 4294 MB Would you like to configure RAID-1 mirroring on them? (Yes/No) [Yes]: This process will erase all data on both drives. Are you sure you want to do this? (Yes/No) [No]: Deleting old partitions on drive vda Deleting old partitions on drive vdb Creating data partition: /dev/vda1 sfdisk: Done Creating data partition: /dev/vdb1 sfdisk: Done