Hello all, Though the question is NFS-related, it is in conjunction with the PXE booting. Issue/Scenario: - PXE/DHCP/NFS and tFTP server running CentOS51 and is configured per PXE/Syslinux and RHEL diskless workstation documentation. 1. Attempt to test ability for client to PXE boot over the network and run Root-NFS 2. NFS export in the PXE server is: # # NFS Export Files for qatest1 host # /export/images *(rw,sync,no_root_squash) /tftpboot *(rw,sync,no_root_squash) Note - We want the client to mount the export - with "no_root_squash" .. it is for a test environment hence we would like to have the client root possess effective ROOT permission. 3. Client boots successfully via PXE and mounts the Root FS; however. Problem: The diskless client did not seem to mount the export with "no_root_squash" option. Whenever I touch a file, it assigns the file as user nobody; I noticed this because of boot-up errors stating inability to write to various /var log files. In further troubleshooting, I noticed the following in the cat /etc/proc/mounts (while comparing to manually mounting an NFS export in the command line while within the diskless client prompt: # cat nfsmounts2.txt rootfs / rootfs rw 0 0 /dev/root / nfs rw,vers=2,rsize=4096,wsize=4096,hard,nolock,proto=udp,timeo=11,retrans=2,sec=null,addr=192.16.10.5 0 0 ** the above reflects configuration for my root-nfs mounted FS; the following below reflects configuration of an NFS client mount performed manually by myself within the diskless client - after reboot: 192.16.10.5:/tftpboot /mnt/test nfs rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=192.168.16.5 0 0 ....... 1. When I manually mounted the client to "/mnt/test" - the "no_root_squash" parameter was enabled. I am able to perform tasks as effective root 2. However, my Root-NFS client mount does not. Question: - Where can I change the default NFS client options within PXE configuration? I attempted to pass various parameters in the /pxelinux.cfg/default file - in the APPEND line - to test whether I can send NFS options through this file, and I am unable to. I tried to change NFS version to force it to run NFS version 3, I tried to change sec=sys (as opposed to what seems to be a default parameter it passes on - sec=null -) Can some please shed some light and be so kind to advise on how the NFS client is mounting in PXElinux when it attempts to mount the Root-NFS? thank you in advance. -- best, Vince