[CentOS] How to PXE kickstart hosts with little memory (Error: "Warning: /dev/root does not exist")?

Fri Apr 21 20:25:05 UTC 2017
Gordon Messmer <gordon.messmer at gmail.com>

On 04/21/2017 12:49 PM, Frank Thommen wrote:
> It seems, that this is not related to local disk space - as I initally 
> thought - but to too small memory.  It only happens with VMs with 
> little RAM (1024 MB).  As soon as we raise the available memory to 
> 2048 MB, kickstarting works fine.  The RHEL 7 installation guide 
> states, that the minimal memory requirement is 1 GB, so the network 
> installation /should/ work.

Yeah, I filed a bug report against the documentation some time ago.


...though bugzilla is currently down.

> Is there a way to install such hosts w/o having to temporarily raise 
> the available memory? 

None that I'm aware of, as of 7.3.  If you have a 7.2 install tree, you 
can boot the older installer and then update the installed system.  
Seems easier to boost the memory, typically.