mac-total-bytes-written

A Python script that reads the total bytes written to your Mac's SSD and displays it in terabytes (TB). Useful for tracking drive wear over time.

Requirements

• macOS
• Python 3
• smartmontools

brew install smartmontools

Usage

git clone https://github.com/nerryc/mac-total-bytes-written.git
cd mac-total-bytes-written
python3 main.py

Example output

Data Units Written: 1,234,567 units, which is approximately 12.34 TB

Notes

• Reads from /dev/disk0 by default — edit main.py if your SSD is at a different path
• Uses smartctl -A under the hood; requires no root on most Macs but may prompt for permissions on some systems

License

MIT — see LICENSE.