--- a/linux-boot-prober
+++ b/linux-boot-prober
@@ -17,7 +17,7 @@
 bootsv=
 bootuuid=
 
-grep "^/dev/" /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
+grep -P '^/dev/(?!root\s)' /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
 
 if [ -z "$1" ]; then
 	ERR=y
--- a/os-prober
+++ b/os-prober
@@ -128,7 +128,7 @@
 
 # We need to properly canonicalize partitions with mount points and partitions
 # used in RAID
-grep "^/dev/" /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
+grep -P '^/dev/(?!root\s)' /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
 : >"$OS_PROBER_TMP/swaps-map"
 if [ -f /proc/swaps ]; then
 	grep "^/dev/" /proc/swaps | parse_proc_swaps >"$OS_PROBER_TMP/swaps-map" || true