diff --git a/linbofs/usr/bin/linbo_partition b/linbofs/usr/bin/linbo_partition
index ee900006..1b6df02a 100755
--- a/linbofs/usr/bin/linbo_partition
+++ b/linbofs/usr/bin/linbo_partition
@@ -211,7 +211,13 @@ fi
 killalltorrents
 
 cd /
-mount | grep -q ' /cache ' && umount /cache &> /dev/null && sleep 3
+# Retry umount up to 10 times: linbo_gui periodically re-mounts /cache for
+# status polling, racing against a single umount + sleep.
+for _ in 1 2 3 4 5 6 7 8 9 10; do
+  mount | grep -q ' /cache ' || break
+  umount /cache &> /dev/null
+  sleep 1
+done
 if mount | grep -q ' /cache '; then
   echo "Cannot unmount /cache." >&2
   exit 1