diff --git a/kopia_backup/readme.md b/kopia_backup/readme.md
index 3c2aa3f..e297fde 100644
--- a/kopia_backup/readme.md
+++ b/kopia_backup/readme.md
@@ -143,7 +143,11 @@ all that is needed is target that should be backed up.
* **mounting backups**
-`sudo kopia mount all /mnt/tmp &` - mounts all snapshots
+Be aware of sudo.
+If you connect with sudo, and mount with sudo,
+you will need to be root to browse the backups.
+
+`sudo kopia mount all /mnt/tmp` - mounts all snapshots
`sudo kopia snapshot list`
`sudo kopia mount k7e2b0a503edd7604ff61c68655cd5ad7 /mnt/tmp &`
`sudo umount /mnt/tmp`
@@ -175,11 +179,12 @@ kopia snapshot create $BACKUP_THIS
kopia repository disconnect
# -------------- ERROR EXIT CODES --------------
-# kopia does not interupts its run with an error if target or repository are missing
-# this makes systemd OnSuccess OnFailure not behaving as one might expect
-# below are checks for paths, that result in immediate error exit code if they do not exist
-# they are at the end because some backup might get done even if another is missing something
-# we just want the error exit code
+# Kopia does not interrupts its run with an error exit code if a target or a repository are missing.
+# This hides errors and makes systemd OnFailure event ineffective.
+# Below are the checks for the paths existence,
+# resulting in an immediate error exit code any of them do not exist.
+# They are at the end because some backup might still get done even if something is missing
+# We just want exit code 1 to let systemd know there was a failure.
IFS=' ' read -ra paths <<< "$BACKUP_THIS"
for path in "${paths[@]}"; do