markdown 在命令行界面上重新格式化可引导USB驱动器。

Posted 2021-05-06

# Reformat a bootable USB drive

## 1. Identify volume
```
df -h
```

Output may look something like this:
```
Filesystem  Size  Used  Avail  Use%  Mounted on
/dev/sda    1.9G  17M   1.9G   1%    /media/pi/USB
```

## 2. Unmount volume
```
sudo umount /dev/sda
```

## 3. Format volume

**vFat filesystem:**
```
sudo mkfs.vfat /dev/sda
```

**NTFS filesystem:**
```
sudo mkfs.ntfs /dev/sda
```

**EXT4 filesystem:**
```
sudo mkfs.ext4 /dev/sda
```