Virt-manager: Difference between revisions

@@ Line 66: / Line 66: @@
       name = "Vanilla-DMZ";
    };
+== Troubleshooting ==
+=== Unable to find 'efi' firmware ===
+The following guide is to fix the following error which will occur when starting a virtual machine after NixOS upgrade:
+<code>Error:  Error starting domain: operation failed: Unable to find 'efi' firmware that is compatible with the current configuration</code>
+Solution:
+# Delete old generations:  <code>nix-collect-garbage -d</code>
+# Find where the EFI boot loaded file is located:  <code>find /nix/store/ -maxdepth 1 -type d -name "*qemu*"  |  xargs -I {} find "{}" -type f -name "edk2-x86_64-secure-code.fd"</code>  Find the dir holding the latest qemu.  The directory should be something like: <code>xbfjilai721rzd9rf9dhhpv03xza4xp4-qemu-9.1.3</code>.  Take a note of this directory name.
+# Open VM in virt-manager, go to XML and within the <code><os ...></code> tag:
+## Edit <code><loader ...></code> with the above directory name
+## Edit <code><nvram ...></code> with the above directory name.
 [[Category:Virtualization]]