请教大佬，编译出来没有default-rootfs该用哪个？

[ZqinKing]

-rw-r--r-- 1 zqinking zqinking 53818690 Jun 1 12:56 openwrt-armvirt-64-generic-ext4-rootfs.img.gz -rw-r--r-- 1 zqinking zqinking 53334003 Jun 1 12:55 openwrt-armvirt-64-generic-rootfs.tar.gz -rw-r--r-- 1 zqinking zqinking 40752122 Jun 1 12:56 openwrt-armvirt-64-generic-squashfs-rootfs.img.gz -rw-r--r-- 1 zqinking zqinking 53282049 Jun 1 13:31 openwrt-armvirt-64-rootfs.cpio.gz -rw-r--r-- 1 zqinking zqinking 53333986 Jun 1 13:30 openwrt-armvirt-64-rootfs.tar.gz