Network_based_Installations.adoc change path of Update modules/install-guide/pages/advanced/
When I had the boot menu for UEFI clients at `/var/lib/tftpboot/pxelinux/uefi` a test client would not pull it.
```
# journalctl --unit tftp.service --unit dhcpd.service --since -2m --follow
[...]
Apr 18 18:12:08 nuc7pjyh.internal.pcfe.net dhcpd[9941]: DHCPREQUEST for 192.168.50.123 (192.168.50.248) from 52:54:00:2c:e7:4b via eno1
Apr 18 18:12:08 nuc7pjyh.internal.pcfe.net dhcpd[9941]: DHCPACK on 192.168.50.123 to 52:54:00:2c:e7:4b via eno1
Apr 18 18:12:09 nuc7pjyh.internal.pcfe.net in.tftpd[24721]: RRQ from ::ffff:192.168.50.123 filename uefi/shimx64.efi
Apr 18 18:12:09 nuc7pjyh.internal.pcfe.net in.tftpd[24721]: Client ::ffff:192.168.50.123 finished uefi/shimx64.efi
Apr 18 18:12:09 nuc7pjyh.internal.pcfe.net in.tftpd[24722]: RRQ from ::ffff:192.168.50.123 filename uefi/grubx64.efi
Apr 18 18:12:11 nuc7pjyh.internal.pcfe.net in.tftpd[24722]: Client ::ffff:192.168.50.123 finished uefi/grubx64.efi
```
changing the file location to `/var/lib/tftpboot/uefi/grub.cfg` made it work
```
# journalctl --unit tftp.service --unit dhcpd.service --since -2m --follow
[...]
Apr 18 18:14:05 nuc7pjyh.internal.pcfe.net dhcpd[9941]: DHCPREQUEST for 192.168.50.123 (192.168.50.248) from 52:54:00:2c:e7:4b via eno1
Apr 18 18:14:05 nuc7pjyh.internal.pcfe.net dhcpd[9941]: DHCPACK on 192.168.50.123 to 52:54:00:2c:e7:4b via eno1
Apr 18 18:14:05 nuc7pjyh.internal.pcfe.net in.tftpd[25121]: RRQ from ::ffff:192.168.50.123 filename uefi/shimx64.efi
Apr 18 18:14:06 nuc7pjyh.internal.pcfe.net in.tftpd[25121]: Client ::ffff:192.168.50.123 finished uefi/shimx64.efi
Apr 18 18:14:06 nuc7pjyh.internal.pcfe.net in.tftpd[25122]: RRQ from ::ffff:192.168.50.123 filename uefi/grubx64.efi
Apr 18 18:14:07 nuc7pjyh.internal.pcfe.net in.tftpd[25122]: Client ::ffff:192.168.50.123 finished uefi/grubx64.efi
Apr 18 18:14:07 nuc7pjyh.internal.pcfe.net in.tftpd[25132]: RRQ from ::ffff:192.168.50.123 filename uefi/grub.cfg
Apr 18 18:14:07 nuc7pjyh.internal.pcfe.net in.tftpd[25132]: Client ::ffff:192.168.50.123 finished uefi/grub.cfg
Apr 18 18:14:07 nuc7pjyh.internal.pcfe.net in.tftpd[25137]: RRQ from ::ffff:192.168.50.123 filename uefi/grub.cfg
Apr 18 18:14:07 nuc7pjyh.internal.pcfe.net in.tftpd[25137]: Client ::ffff:192.168.50.123 finished uefi/grub.cfg
```