Flasher ⚡

A minimal GUI tool to flash ISO images to USB drives using dd.

Features

• Browse and select any .iso file
• Auto-detects all block devices (removable drives highlighted)
• Real-time progress bar with bytes written, total size, and write speed
• Cancel in-progress flash
• Automatically unmounts partitions on the target device before writing
• Dark UI — no extra dependencies beyond Python stdlib + tkinter

Requirements

Dependency	Notes
Python ≥ 3.11	stdlib only — no pip packages needed
tkinter	Usually bundled; on Debian/Ubuntu: sudo apt install python3-tk
dd	Part of GNU coreutils
lsblk	Part of util-linux
sudo	Required to write to block devices

Usage

# Clone / open the project, then:
chmod +x run.sh
./run.sh

Or after installing:

pip install -e .
flasher

How it works

1. Pick an ISO file with Browse…
2. Select your USB drive from the dropdown (click ↻ to refresh)
3. Click ⚡ Flash Now — confirm the warning dialog
4. sudo dd if=<iso> of=<device> bs=4M conv=fsync status=progress runs in a background thread
5. Progress, speed and status are streamed from dd's stderr in real time
6. Click ✕ Cancel at any time to abort

⚠️ All data on the selected device will be permanently erased.