[expert] HD install with 8.1 stops after partitioning

[Niklas Herder]

I downloaded the iso of 8.1 rc1, and used the hd.img in the latest cooker distro. Everything loads up fine, but when I have done my partitioning, the install stops with an error saying something like "umount failed: /tmp/hdimg: resource/device busy" (not sure if it's exactly "hdimg", but it seems to be trying to unmount one of the HD:s) I'm installing from a partition on my windows drive (an ATA-100 on ide2), and to an ATA-33 on ide0. Has anyone else had this problem? And if so, have you been able to solve it?   /Niklas Herder