FreeBSD 9-R pxeboot fails with 'Mounting root filesystem rw failed'...

Karl Pielorz kpielorz_lst at
Thu Mar 1 10:36:15 UTC 2012


I've got a 9.0-R amd64 system I'm trying to netboot / pxeboot from the 
network, to install other machines (and do fixups etc.)

I set this up as we setup previous versions here - but setting up a tftp 
server, and nfs server - and 'dumping' the contents of the install CD to a 
directory on the dhcp server, which is exported via nfs (it's exported as 

The system kind of boots, but falls over with:

Interface em0 IP-Address Broadcast
Entropy harvesting: interrupts ethernet point_to_pick kickstart.
Starting file system checks:
mount_nfs: no <host>:<dirpath> nfs-name
Mounting root filesystem rw failed, startup aborted
ERROR: ABORTING BOOT (sending SIGTERM to parent)!
Mar  1 118:10 init: /bin/sh on /etc/rc terminated abnormally, going to 
single user mode
Enter full pathname of shell or RETURN for /bin/sh:

It looks like it's failing to 'remount' / promote the root file system as 
read/write (It's definitely exported as read/write - I've tested it by 
mounting it on another machine). If you start a shell at this point and run 
mount, you get:

" on / (nfs, read-only)
devfs on /dev (devfs, local, multilabel)

Is there something I have to set (e.g. in '/etc/rc.conf') in order to fix 

Previous systems setup this way would always boot through to the sysinstall 



More information about the freebsd-questions mailing list