mount NFS fails on successful PXE boot
 

Dear forum,
I built a Debain etchandhalf image on NFS server with PXE boot. The system works well.
When I boot I want the system to mount NFS:
192.168.254.128:/mnt/HD_a2/music /mnt/music nfs suid,dev,exec 0 0

Problem: after reboot the system does not mount the NFS drive.
Mounting after reboot works ok.
Objective: find a method that would mount the NFS on boot.

Thanks in advance to your review.

ale99