Comment 0 for bug 1575652

Attempting to use PXE to install 16.04 results in an error dialog that states "The failing step is: Install the system". Checking syslog shows that it has prefixed the URL to the filesystem.squashfs with "/cdrom" and failed to find the file.

base-installer: info: Downloading /cdromhttp://192.168.1.251/ubuntu-1604.amd64/install/filesystem.squashfs to /tmp/live-installer/filesystem.squashfs

Setting the path to the filesystem.squashfs by either the "append" option in the PXE default file, or as a preseed option in the kickstart file both have the same result.

My PXE menu option:

LABEL Ubuntu 16.04 Desktop
MENU LABEL Xenial 16.04 Desktop
KERNEL 1604/ubuntu-installer/amd64/linux
append vga=normal ks=http://192.168.1.251/ks-1604-64-desktop.cfg initrd=1604/ubuntu-installer/amd64/initrd.gz live-installer/net-image=http://192.168.1.251/ubuntu-1604.amd64/install/filesystem.squashfs biosdevname=0

I found a changelog for live-installer 51ubuntu1 dated 4/18/16 that states it strips /cdrom/ prefix from all places, but this does not appear to be happening. The log line points to base-installer rather than live-installer as the cause.

This is from the 16.04 server release ISO, running base-installer_1.158ubuntu2_amd64 and live-installer_51ubuntu2_amd64

I would expect that locating the live-installer filesystem.squashfs would not prefix the specified URL with /cdrom. Previous versions of Ubuntu did not do this.