I include an example of the wrong entry files that gets created. This is /boot/loader/entries/ovirt-node-ng-4.5.3.2-0.20221028.0+1-4.18.0-408.el8.x86_64.conf: ----- title ovirt-node-ng-4.5.3.2-0.20221028.0 (4.18.0-408.el8.x86_64) version 4.18.0-408.el8.x86_64 linux //ovirt-node-ng-4.5.3.2-0.20221028.0+1/vmlinuz-4.18.0-408.el8.x86_64 initrd //ovirt-node-ng-4.5.3.2-0.20221028.0+1/initramfs-4.18.0-408.el8.x86_64.img options crashkernel=auto resume=/dev/mapper/onn_ovirt--clai1-swap rd.lvm.lv=onn_ovirt-clai1/ovirt-node-ng-4.5.3.2-0.20221028.0+1 rd.lvm.lv=onn_ovirt-clai1/swap rhgb quiet intel_iommu=on root=/dev/onn_ovirt-clai1/ovirt-node-ng-4.5.3.2-0.20221028.0+1 boot=UUID=9d44cf2a-38bb-477d-b542-4bfc30463d1f rootflags=discard img.bootid=ovirt-node-ng-4.5.3.2-0.20221028.0+1 'modprobe.blacklist=nouveau transparent_hugepage=never hugepagesz=1G hugepages=256 default_hugepagesz=1G' id centos-0-4.18.0-408.el8.x86_64 grub_users $grub_users grub_arg --unrestricted grub_class kernel --- You see that the last part of the "options" line (which is the part I typed in the kernel command line configuration parameter in ovirt-engine) is surrounded by quotes.