Rocky 9.5 cannot update grub kernel parameters

I've freshly installed Rocky 9.5 as a VM hosted by UTM/qemu on MacOs. It boots and can connect to the network. However, I cannot seem to modify the grub2 configuration to modify kernel parameters. After updating the config, reinstalling grub completely, checking the EFI boot manager, etc, it seems that it is just not reading the file at /boot/efi/EFI/rocky/grub.cfg I want to have net.ifnames=0 biosdevname=0 permanently added to the default kernel params. After the process below, the params are there but rebooting the machine, they are not shown in /proc/cmdline. Any ideas what's going on and how to fix? -- Process I did: I started by modifying /etc/default/grub : # cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=/dev/mapper/rl-swap rd.lvm.lv=rl/root rd.lvm.lv=rl/swap net.ifnames=0 biosdevname=0 rhgb quiet" GRUB_DISABLE_RECOVERY="true" GRUB_ENABLE_BLSCFG=true Then update the boot partition: grub2-mkconfig -o /boot/grub2/grub.cfg Confirmed that the changes are put into /boot/efi/EFI/rocky/grub.cfg : # grep quiet /boot/efi/EFI/rocky/grub.cfg set kernelopts="root=/dev/mapper/rl-root ro crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=/dev/mapper/rl-swap rd.lvm.lv=rl/root rd.lvm.lv=rl/swap net.ifnames=0 biosdevname=0 rhgb quiet " I also confirmed that the system will boot from the correct partition: # efibootmgr -v BootCurrent: 0004 Timeout: 0 seconds BootOrder: 0001,0004,0002,0000,0003 Boot0000* UiApp FvVol(7cb8bdc9-f8eb-4f34-aaea-3ee4af6516a1)/FvFile(462caa21-7614-4503-836e-8ab6f4662331) Boot0001* UEFI QEMU DVD-ROM QM00001 PciRoot(0x0)/Pci(0x1f,0x2)/Sata(0,65535,0)N.....YM....R,Y. Boot0002* UEFI QEMU HARDDISK QM00003 PciRoot(0x0)/Pci(0x1f,0x2)/Sata(1,65535,0)N.....YM....R,Y. Boot0003* EFI Internal Shell FvVol(7cb8bdc9-f8eb-4f34-aaea-3ee4af6516a1)/FvFile(7c04a583-9e3e-4f1c-ad65-e05268d0b4d1) Boot0004* rocky HD(1,GPT,b97500fe-6a36-4d95-8d78-7703261cf0f7,0x800,0x12c000)/File(\EFI\rocky\grubx64.efi)