Index: os-prober/os-probes/mounted/x86/05efi

===================================================================

--- os-prober.orig/os-probes/mounted/x86/05efi

+++ os-prober/os-probes/mounted/x86/05efi

@@ -59,7 +59,11 @@ ret=1

 for test in /usr/lib/os-probes/mounted/efi/*; do

 	debug "running subtest $test"

 	if [ -f "$test" ] && [ -x "$test" ]; then

+		# we need results of subtest in stdout

+		orig_fd_res=$fd_result

+		export fd_result=1

 		entry=$("$test" "$mpoint/$efi")

+		export fd_result=$orig_fd_res

 		if [ -n "$entry" ]; then

 			debug "bootloader $entry found by subtest $test"

 			ret=0