I have a Hyper-V machine that crashed. I am trying to refresh it but the disk is too small when I load the disk.ISO in. I tried to expand it but I still get the screen. Is there a way to add the added disk space to the so that it sees the extra disk space and can use it?
You had to resize the filesystem to let the added space be usable.
Try booting with a Parted live cd and resize you filesystem, then retry the refresh process.