b459cd8732
The chain boot path looks for hiperiso_x64.efi in /hiperiso/ on the data partition. Without this, booting ISOs (non-memdisk) fails with 'ventoy not ready chain empty failed'. The installer now mounts the data partition after writing the ESP image and copies ./hiperiso/* (hiperiso_x64.efi, iso9660_x64.efi, udf_x64.efi, vtoyutil_x64.efi, wimboot, memdisk, etc.) to it. This makes the ISO chain boot work for non-memdisk boot modes.