drivemon

A btop-inspired TUI disk monitor written in Rust with Ratatui.

┌ 💽 drivemon   Overview   SMART Attrs   I/O History   [↑↓/jk] disk  [Tab] tab  [r] refresh SMART  [q] quit ┐
├──────────────────┬──────────────────────────────────────────────────────────────────────────────────────────┤
│ Drives           │ Drive Info                                                                               │
│ ● /dev/sda 42°C │ /dev/sda  ─  Samsung SSD 870 EVO 1TB                                                   │
│ ○ /dev/sdb       │ ✔ PASSED  🌡 42°C  ⏱ 8432 h (0.96 yr)  💾 1.0 TB                                    │
│                  │ S/N: S3EVNX0K123456                                                                     │
│                  ├── Read ──────────────────────────────────────────────── 125.4 MB/s ──────────────────── │
│                  │ ▁▁▁▁▂▃▄▅▆▇█▇▆▅▄▃▂▁▁▁▁▁▁▁                                                              │
│                  ├── Write ─────────────────────────────────────────────── 45.2 MB/s ───────────────────── │
│                  │ ▁▁▁▂▁▁▁▁▂▃▂▁▁▁▁▁▁▁▁▁▁                                                                  │
│                  ├── Partitions ────────────────────────────────────────────────────────────────────────── │
│                  │ Device  Mount  FS    Usage              %    Capacity                                   │
│                  │ sda1    /boot  vfat  ████████░░░░░░░░░  45%  200.0 GB / 110.0 GB free                  │
│                  │ sda2    /      ext4  ███████████████░░  78%  800.0 GB / 176.0 GB free                  │
└──────────────────┴──────────────────────────────────────────────────────────────────────────────────────────┘

Features

• Overview tab – drive info, live read/write speed sparklines, partition usage bars
• SMART Attrs tab – full ATA/NVMe SMART attribute table with threshold highlighting
• I/O History tab – 60-second read and write sparklines with peak tracking
• Automatic NVMe support (temperature in Kelvin converted automatically)
• Graceful degradation when smartctl is unavailable

Dependencies

Runtime

Tool	Purpose
smartmontools	SMART health data (smartctl)

Install on Debian/Ubuntu: sudo apt install smartmontools
Install on Arch: sudo pacman -S smartmontools
Install on Fedora: sudo dnf install smartmontools

SMART permissions

smartctl requires elevated privileges to read drive health data. Either:

# Option A – run drivemon as root
sudo drivemon

# Option B – grant your user access (Linux)
sudo usermod -aG disk $USER   # then log out and back in
sudo setcap cap_sys_rawio+ep $(which smartctl)

# Option C – use a sudoers rule
# Add to /etc/sudoers.d/smartctl:
# %disk ALL=(root) NOPASSWD: /usr/bin/smartctl

Without SMART access the app still shows I/O speeds and partition usage — you'll just see a note in the SMART tab.

Build

cargo build --release
./target/release/drivemon

# Or run directly
cargo run --release

Releases

Prebuilt binaries are available for Linux on the GitHub Releases page.

Supported platforms:

• Linux (x86_64)
• Linux (ARM64)