diff --git a/docs/SERVICE_CATALOG.md b/docs/SERVICE_CATALOG.md
index 09572fc..8f25d21 100644
--- a/docs/SERVICE_CATALOG.md
+++ b/docs/SERVICE_CATALOG.md
@@ -74,7 +74,7 @@ Secret-Werte sind nicht enthalten. Es werden nur Secret-Namen, Env-Key-Namen und
 
 | Service | Zweck | Autoritativer Pfad | URL / Zugang | Abhaengigkeiten | Datenpfade | Backup / Restore | Traefik | Besonderheiten / TODOs |
 |---|---|---|---|---|---|---|---|---|
-| `posture-check` | Host-Posture-Audit fuer Filesystem, Mover-Drift, NVMe-SMART und Fuellstand | `services/posture-check/posture-check.sh` | Unraid User-Script / Cron / Borg Pre-Hook | `findmnt`, `df`, `nvme`, optional `curl` fuer ntfy | `/mnt/user/services/posture-check/last.json` | Repo-Skript + letzter JSON-Status | nein | Muss auf dem Unraid-Host bei Boot, stuendlich und vor Borg laufen; Warning/Critical alarmieren via ntfy |
+| `posture-check` | Host-Posture-Audit fuer Filesystem, Mover-Drift, NVMe-SMART und Fuellstand | `services/posture-check/posture-check.sh` | Unraid User-Script / Cron / Borg Pre-Hook | `findmnt`, `df`, `nvme`, optional `curl` fuer ntfy | `/mnt/user/services/posture-check/last.json` | Repo-Skript + letzter JSON-Status | nein | Muss auf dem Unraid-Host bei Boot, stuendlich und vor Borg laufen; `ALLOW_DISK1_NTFS=1` ist die dokumentierte Uebergangsausnahme bis Disk1-Migration Phase 2; Warning/Critical alarmieren via ntfy |
 
 ## Backup- und Restore-Hinweise
 
diff --git a/services/posture-check/posture-check.sh b/services/posture-check/posture-check.sh
index 6cb5633..d89cf73 100755
--- a/services/posture-check/posture-check.sh
+++ b/services/posture-check/posture-check.sh
@@ -7,6 +7,7 @@ WARNING_TOPIC="${WARNING_TOPIC:-kallilab-warning}"
 CRITICAL_TOPIC="${CRITICAL_TOPIC:-kallilab-critical}"
 SEND_NTFY="${SEND_NTFY:-1}"
 TMP_DIR="${TMP_DIR:-/tmp/kallilab-posture-check}"
+ALLOW_DISK1_NTFS="${ALLOW_DISK1_NTFS:-1}"
 
 mkdir -p "$TMP_DIR"
 RESULTS_FILE="$TMP_DIR/results.$$"
@@ -64,15 +65,22 @@ check_fstype() {
 
 check_no_ntfs_on_core_mounts() {
   local hits
+  local pattern="^/mnt/(cache|disk1)(/|$)"
 
   if ! command -v findmnt >/dev/null 2>&1; then
     add_result "warning" "no_ntfs_core_mounts" "Cannot check NTFS mounts because findmnt is missing"
     return
   fi
 
-  hits="$(findmnt -rn -o TARGET,FSTYPE 2>/dev/null | awk '$1 ~ "^/mnt/(cache|disk1)(/|$)" && ($2 == "ntfs3" || $2 == "fuseblk") { print $1 ":" $2 }' | paste -sd ',' -)"
+  if [ "$ALLOW_DISK1_NTFS" = "1" ]; then
+    pattern="^/mnt/cache(/|$)"
+  fi
+
+  hits="$(findmnt -rn -o TARGET,FSTYPE 2>/dev/null | awk -v pattern="$pattern" '$1 ~ pattern && ($2 == "ntfs3" || $2 == "fuseblk") { print $1 ":" $2 }' | paste -sd ',' -)"
   if [ -n "$hits" ]; then
     add_result "critical" "no_ntfs_core_mounts" "NTFS-like filesystem on core mount: $hits"
+  elif [ "$ALLOW_DISK1_NTFS" = "1" ]; then
+    add_result "warning" "no_ntfs_core_mounts" "No NTFS on /mnt/cache; /mnt/disk1 NTFS is temporarily allowed until Disk1 phase 2 migration"
   else
     add_result "ok" "no_ntfs_core_mounts" "No ntfs3/fuseblk mounts below /mnt/cache or /mnt/disk1"
   fi
@@ -102,6 +110,10 @@ check_inode_usage() {
     add_result "warning" "$name" "Cannot read inode usage for $path"
     return
   fi
+  if ! printf '%s' "$use_percent" | grep -Eq '^[0-9]+$'; then
+    add_result "warning" "$name" "$path inode usage unavailable (${use_percent:-unknown})"
+    return
+  fi
 
   if [ "$use_percent" -lt "$max_percent" ]; then
     add_result "ok" "$name" "$path inode usage ${use_percent}%"
@@ -246,7 +258,11 @@ main() {
   need_cmd awk || true
 
   check_fstype "/mnt/cache" "xfs" "critical" "cache_fstype"
-  check_fstype "/mnt/disk1" "xfs" "critical" "disk1_fstype"
+  if [ "$ALLOW_DISK1_NTFS" = "1" ]; then
+    check_fstype "/mnt/disk1" "ntfs3" "warning" "disk1_fstype"
+  else
+    check_fstype "/mnt/disk1" "xfs" "critical" "disk1_fstype"
+  fi
   check_no_ntfs_on_core_mounts
   check_mover_drift
   check_inode_usage "/mnt/cache" 80 "cache_inode_usage"