Hi @Miko10,
Are you tried to install from USB stick, isn’t?
I had issues with USB ( Try out Nethserver 7 beta1 ).
@filippo_carletti said to follow this:
"To create an usb key from the downloaded iso, simply use dd.
See the first paragraph of the official documentation:
https://wiki.centos.org/HowTos/InstallFromUSBkey "
@dnutan said this:
" does the server has a floopy drive?
If it doesn’t look into the BIOS settings and disable any floppy related setting (Drive A:) if present."
At the end, I have installed from DVD with no issues. Always works.