diff --git a/pages/linux/fsck.md b/pages/linux/fsck.md
index 28054da8e..c119e0dcb 100644
--- a/pages/linux/fsck.md
+++ b/pages/linux/fsck.md
@@ -3,14 +3,14 @@
 > Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run.
 > More information: <https://manned.org/fsck>.
 
-- Check filesystem `/dev/sdX`, reporting any damaged blocks:
+- Check filesystem `/dev/sdXN`, reporting any damaged blocks:
 
-`fsck {{/dev/sdX}}`
+`sudo fsck {{/dev/sdXN}}`
 
-- Check filesystem `/dev/sdX`, reporting any damaged blocks and interactively letting the user choose to repair each one:
+- Check filesystem `/dev/sdXN`, reporting any damaged blocks and interactively letting the user choose to repair each one:
 
-`fsck -r {{/dev/sdX}}`
+`sudo fsck -r {{/dev/sdXN}}`
 
-- Check filesystem `/dev/sdX`, reporting any damaged blocks and automatically repairing them:
+- Check filesystem `/dev/sdXN`, reporting any damaged blocks and automatically repairing them:
 
-`fsck -a {{/dev/sdX}}`
+`sudo fsck -a {{/dev/sdXN}}`