**Problem:**
- USB drives mounted as root were not writable by regular user
- Caused "Permission denied" errors on backup
- Required running application as root (not secure)
**Solution:**
- Better permission error messages with fix suggestions
- Try to create backup directory first (more flexible)
- Show helpful error: "run sudo chown -R \$USER /media/usb0"
**USB Setup Script (setup_usb.sh):**
- Interactive USB drive mounting
- Automatically detects USB devices
- Mounts with user ownership (uid/gid)
- Tests write permissions
- Shows free space
- Offers to add to /etc/fstab
- Color-coded output
**Documentation Updates:**
- Added 3 methods for mounting with permissions
- Recommended method: mount with uid/gid options
- Added fstab auto-mount example
- Added quick setup script example
- Clear instructions for each method
**Usage:**
```bash
# Easiest method
sudo ./setup_usb.sh
# Or manual mounting
sudo mount -o uid=$(id -u),gid=$(id -g) /dev/sda1 /media/usb0
# Or fix existing mount
sudo chown -R $USER /media/usb0
```
**Security:**
- No need to run wedding phone as root
- User-owned USB mount points
- Proper permission checking
- Clear error messages
**Web Interface:**
- Shows helpful permission error messages
- Includes fix command in error text
- Better UX for permission issues
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
