PXE-based kickstart fails on RHEL/CentOS-7.4

[tegner at renget.se]

Hi,

have for a long time used a setup to use kickstart over PXE. The "netboot-file" responsible for starting kickstart has the following contents:

default linux
serial 0,9600n8
label linux
kernel vmlinuz-centos73
append console=tty0 initrd=initrd-centos73.img ks=<http://192.168.0.198/kickstart/ks-centos73.cfg>

However, when I apply this on CentOS-7.4 (after changing image and kernel) it hangs on "switchroot":

"... specified switch root path /sysroot does not seem to be an OS tree. os-release file is missing."

Any hints on what may be causing this are greatly appreciated.

Thanks,

/jon

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