Installer Bootloader UEFI wrong directory for grubx64.efi in UEFI

[eliasmagn]

The issue: the grubx64.efi resides under EFI/centos/ but installer configures uefi on EFI/fedora/shim.efi
On my system gigabyte j1900n d3v, it is possible to boot via usb3.0 and it works fine when configuring uefi after installation via efibootmgr. I have to chroot into /mnt/sysimage
efibootmgr -v -c -L"Rockstor" -d /dev/sdc -p1 -l "EFI/centos/grubx64.efi"
Although i have to grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
The Rockstor-Installer configures efibootmgr as:
EFI/fedora/shim.efi
which is not existing and failes to write grub config.
/EFI/BOOT/BOOTX64.EFI is existing as well but ignored by my board, dont know wy! The reason could be in booting from usb3.0. Debian/Centos/Gentoo/Arch isos are booting fine on USB3.0
I only wanted to tell you about the fedora bootentry which is not correct.