@george1421 Thanks, I really appreciate your help!

@Sebastian-Roth
Thank you very much. I really confused everything. Your advice helped my and now everything became clear. default.ipxe script file is what I need.

After downloading NBP file and booting it I want to stop executing script and entering command line interface to point for example to other source. OR enter command line interface on Fog Project greetings image.

have Fog server installed in my environment. Client gets dhcp configuration from dhcp server and then loads file from tftp server. File name is ipxe.efi. As I understand it is bootloader and it has command line where i can change some parameters. But cannot guess how can i open it. For example to chain to different source.

I have Fog server installed in my environment. Client gets dhcp configuration from dhcp server and then loads file from tftp server. File name is ipxe.efi. As I understand it is bootloader and it has command line where i can change some parameters. But cannot guess how can i open it. For example to chain to different source.

Good day to all! I tried to find any clues to open iPXE command line during booting but alas i failed. Can anybody help me with the issue. (Sorry if i made any mistakes, english is’t my native language).