I am back at this, again, trying to get my linux PXE server back up and running. I have the x86_pc (pxelinux.0) boots fine. I can boot Ubuntu Gnome 16.04 to teh setup screen. Every time I attempt to boot the same nfs from a computer which can boot via efi (x64_efi), I get a failed transfer. This is with 6.04_pre I grabbed well over a year ago. What happens is I get a TFT transport error. This is the log from the nas which is serving the tftp server. When I tried this, previously, I got the same error. May 8 21:44:40 NAS tftpd[88431]: Got ERROR packet: User aborted the transfer May 8 21:45:43 NAS tftpd[88559]: Got ERROR packet: User aborted the transfer May 8 21:45:48 NAS tftpd[88561]: Timeout #0 on ACK 37 May 8 21:45:53 NAS tftpd[88561]: Timeout #1 on ACK 37 May 8 21:45:58 NAS tftpd[88561]: Timeout #2 on ACK 37 May 8 21:46:03 NAS tftpd[88561]: Timeout #3 on ACK 37 May 8 21:46:08 NAS tftpd[88561]: Timeout #4 on ACK 37 May 8 21:46:13 NAS tftpd[88561]: Timeout #5 send ACK 37 giving up Can I get a bit of assistance to get this resolved? My directory ls is this: /pxe/x64_efi # ls -al total 1115 drwxrwxrwx 6 kgrider wheel 14 May 9 09:11 . drwxrwxrwx 8 root wheel 8 May 8 20:51 .. drwxr-xr-x 11 root wheel 14 May 8 21:22 gubuntu_16_04_1 -rwxrwxrwx 1 kgrider wheel 139616 Feb 19 2017 ldlinux.e64 -rwxrwxrwx 1 kgrider wheel 201336 Feb 19 2017 libcom32.c32 -rwxrwxrwx 1 kgrider wheel 27304 Feb 19 2017 libmenu.c32 -rwxrwxrwx 1 kgrider wheel 24464 Feb 19 2017 libutil.c32 -rwxrwxrwx 1 kgrider wheel 32064 Feb 19 2017 menu.c32 drwxrwxrwx 2 kgrider wheel 5 May 8 21:23 pxelinux.cfg -rwxrwxrwx 1 kgrider wheel 126743 Feb 18 2017 splash.png -rwxrwxrwx 1 kgrider wheel 200992 Feb 19 2017 syslinux.efi -rwxrwxrwx 1 kgrider wheel 32776 Feb 19 2017 vesamenu.c32 This is the entry I am trying to boot: kernel gubuntu_16_04_1/casper/vmlinuz.efi append initrd=gubuntu_16_04_1/casper/initrd.lz file=gubuntu_16_04_1/preseed/ubuntu-gnome.seed boot=casper vga=1 netboot=nfs nfsroot=192.168.2.198:/mnt/first_NAS/pxe/x64_efi/gubuntu_16_04_1 nosplash nomodeset -- Regards, Keith