Gan, Jimmy
101 lines
3.2 KiB
Bash
Executable File
101 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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# Force Purge System Data (351GB)
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# The 351GB is likely "purgeable" space that macOS won't release until forced
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set -e
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echo "=== Force Purge System Data (351GB) ==="
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echo ""
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echo "The 351GB in System Data is likely PURGEABLE space."
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echo "macOS shows it as 'used' but it's actually available."
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echo "We'll force macOS to release it by creating a large file."
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echo ""
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FREE_SPACE_BEFORE=$(df / | tail -1 | awk '{print $4}')
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FREE_SPACE_GB_BEFORE=$(echo "scale=2; $FREE_SPACE_BEFORE / 1024 / 1024" | bc)
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echo "Current free space: ${FREE_SPACE_GB_BEFORE}GB"
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echo ""
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echo "🔧 Method: Create a large file to force purge..."
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echo ""
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echo " This will:"
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echo " 1. Create a 50GB file (forces macOS to purge space)"
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echo " 2. Delete it immediately"
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echo " 3. This should release the purgeable space"
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echo ""
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read -p "Proceed? This is safe - file will be deleted immediately. (y/n) " -n 1 -r
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echo ""
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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echo "Cancelled."
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exit 0
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fi
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echo ""
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echo "Creating 50GB test file to force purge..."
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echo " (This may take a few minutes)"
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echo ""
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# Create large file to force purge
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TEST_FILE="$HOME/test_force_purge_$(date +%s).tmp"
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if dd if=/dev/zero of="$TEST_FILE" bs=1g count=50 2>/dev/null; then
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echo " ✅ Created 50GB file"
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echo ""
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echo " Checking space after creation..."
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sleep 2
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FREE_DURING=$(df / | tail -1 | awk '{print $4}')
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FREE_DURING_GB=$(echo "scale=2; $FREE_DURING / 1024 / 1024" | bc)
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echo " Free space during: ${FREE_DURING_GB}GB"
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echo ""
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echo " Deleting test file..."
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rm -f "$TEST_FILE"
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echo " ✅ Deleted"
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else
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echo " ⚠️ Could not create file (not enough space or permission issue)"
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echo " This means the purgeable space may not be available"
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fi
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echo ""
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echo "⏳ Waiting for system to update..."
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sleep 10
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# Check final results
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FREE_SPACE_AFTER=$(df / | tail -1 | awk '{print $4}')
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FREE_SPACE_GB_AFTER=$(echo "scale=2; $FREE_SPACE_AFTER / 1024 / 1024" | bc)
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FREED_GB=$(echo "scale=2; $FREE_SPACE_GB_AFTER - $FREE_SPACE_GB_BEFORE" | bc)
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echo ""
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echo "=== Results ==="
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echo " Before: ${FREE_SPACE_GB_BEFORE}GB free"
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echo " After: ${FREE_SPACE_GB_AFTER}GB free"
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if (( $(echo "$FREED_GB > 100" | bc -l) )); then
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echo " ✅ Successfully freed: ${FREED_GB}GB!"
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echo " The purgeable space was released!"
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elif (( $(echo "$FREED_GB > 0" | bc -l) )); then
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echo " ✅ Freed: ${FREED_GB}GB"
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else
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echo " ⚠️ No space freed"
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fi
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echo ""
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echo "=== Understanding System Data (351GB) ==="
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echo ""
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echo "If System Data still shows 351GB but you have free space,"
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echo "this is NORMAL macOS behavior:"
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echo ""
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echo " - System Data includes PURGEABLE space"
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echo " - Purgeable space is AVAILABLE but shown as 'used'"
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echo " - macOS will release it automatically when needed"
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echo " - The space is actually available for use"
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echo ""
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echo "To verify space is available:"
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echo " 1. Try creating a large file (you just did)"
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echo " 2. Check Activity Monitor → Disk → Purgeable"
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echo " 3. The space will be released when you actually need it"
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echo ""
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echo "The 351GB in System Data is misleading - much of it"
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echo "is purgeable and available when needed."
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echo ""
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