Gan, Jimmy
111 lines
3.7 KiB
Bash
Executable File
111 lines
3.7 KiB
Bash
Executable File
#!/bin/bash
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# Find Real 351GB Usage in System Data
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# Since purgeable space test failed, the space is actually being used
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set -e
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echo "=== Find Real 351GB Usage in System Data ==="
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echo ""
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echo "The 50GB file creation FAILED, which means:"
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echo " - The 351GB is NOT purgeable"
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echo " - It's actually being used"
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echo " - We need to find what's using it"
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echo ""
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echo "📊 Container Analysis:"
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CONTAINER_TOTAL=$(diskutil info / | grep 'Container Total' | awk '{print $4, $5}')
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CONTAINER_FREE=$(diskutil info / | grep 'Container Free' | awk '{print $4, $5}')
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CONTAINER_USED=$(diskutil apfs list 2>/dev/null | grep "Capacity In Use" | awk '{print $6, $7}')
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echo " Container Total: $CONTAINER_TOTAL"
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echo " Container Free: $CONTAINER_FREE"
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echo " Container Used: $CONTAINER_USED"
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echo ""
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echo "📦 APFS Volume Breakdown:"
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diskutil apfs list 2>/dev/null | grep -E "Volume|Capacity Consumed" | while read line; do
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if echo "$line" | grep -q "Volume"; then
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VOL_NAME=$(echo "$line" | sed 's/.*Name: *\([^(]*\).*/\1/')
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echo " Volume: $VOL_NAME"
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elif echo "$line" | grep -q "Capacity Consumed"; then
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SIZE=$(echo "$line" | awk '{print $3, $4}')
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echo " Size: $SIZE"
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fi
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done
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echo ""
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echo "📸 APFS Snapshots:"
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APFS_SNAPS=$(diskutil apfs listSnapshots / 2>/dev/null)
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if [ -n "$APFS_SNAPS" ]; then
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echo "$APFS_SNAPS" | head -20 | sed 's/^/ /'
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echo ""
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echo " ⚠️ The OS update snapshot may be holding space"
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echo " This snapshot is NOT purgeable and can't be deleted"
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else
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echo " No snapshots found"
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fi
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echo ""
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echo "🔍 Large System Directories:"
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echo " /System:"
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sudo du -h -d 2 /System/Volumes/Data/System 2>/dev/null | sort -hr | head -5 | awk '{printf " %8s %s\n", $1, $2}'
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echo ""
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echo " /Library:"
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sudo du -h -d 2 /System/Volumes/Data/Library 2>/dev/null | sort -hr | head -5 | awk '{printf " %8s %s\n", $1, $2}'
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echo ""
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echo "🔍 Searching for large files (>10GB)..."
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echo " (This may take a moment)"
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LARGE_FILES=$(sudo find /System/Volumes/Data -type f -size +10G 2>/dev/null | head -5)
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if [ -n "$LARGE_FILES" ]; then
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echo "$LARGE_FILES" | while read file; do
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SIZE=$(sudo du -h "$file" 2>/dev/null | awk '{print $1}')
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echo " $SIZE $file"
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done
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else
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echo " No files >10GB found"
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fi
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echo ""
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echo "=== Analysis ==="
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echo ""
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echo "The 351GB in System Data is likely:"
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echo ""
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echo "1. **APFS Snapshot Overhead** (Most Likely)"
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echo " - The OS update snapshot (12.2GB visible)"
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echo " - May be holding 300+ GB of deleted file space"
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echo " - APFS snapshots preserve deleted files"
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echo " - This space is NOT purgeable until snapshot is deleted"
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echo ""
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echo "2. **Time Machine Local Snapshots**"
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echo " - The stuck snapshot entry"
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echo " - May be holding space even though it's a 'ghost'"
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echo ""
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echo "3. **System Reserved Space**"
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echo " - macOS reserves space for operations"
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echo " - Shown in System Data but not easily identifiable"
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echo ""
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echo "=== Solution ==="
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echo ""
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echo "The OS update snapshot CANNOT be deleted (it's required)."
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echo "However, you can try:"
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echo ""
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echo "1. **Update macOS** (if available):"
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echo " System Settings → General → Software Update"
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echo " Installing updates may clear old snapshots"
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echo ""
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echo "2. **Check for macOS Install Data** (11GB found):"
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echo " sudo rm -rf /System/Volumes/Data/macOS\ Install\ Data"
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echo " (Safe to delete after installation completes)"
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echo ""
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echo "3. **The space may be in APFS snapshot overhead**:"
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echo " This is space held by the OS update snapshot"
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echo " It will be released when you update macOS"
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echo ""
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echo "4. **Check Storage Management for details**:"
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echo " Apple Menu → About This Mac → Storage"
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echo " Hover over 'System Data' for more details"
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echo ""
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