I'd like to use virt-customize to change the password of the OS in a cloud image as below:
virt-customize -a ubuntu-18.04.6-live-server-amd64.iso --root-password password:root
but gives an error:
Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes
the output of qemu-img info ubuntu-18.04.6-live-server-amd64.iso
is:
image: ubuntu-18.04.6-live-server-amd64.iso file format: raw virtual size: 969 MiB (1016070144 bytes) disk size: 969 MiB
I've googled a lot but all i could find was some stuff about USB