If you plug in a USB drive (that Windows can read),
it doesn't automatically appear in `/mnt`.

## Drvfs
If Windows already sees the drive in File Explorer, you can mount it in WSL using drvfs.

```bash
sudo mkdir /mnt/e
sudo mount -t drvfs E: /mnt/e
```
which one can turn into a simple function such as
```bash
wm() {
  local D="$1"
  local DU="${D^}" # make uppercase in case we need to
  local DL="${D,}"
  local M="/d/${DL}"
  if [[ $D =~ ^[a-zA-Z]$ ]]; then
    # check if already mounted
    if [[ -d "$M" ]] && mountpoint "$M" >&/dev/null; then
      echo "$M already mounted";
      return
    fi;

    sudo mkdir -p /d/${DL} || { echo "Failed to ensure /d/${DL} exists"; return 1; }
    sudo mount -t drvfs ${DU}: "$M" || { echo "Failed to mount ${DU}: on $M"; return 1; }
    echo "Mounted ${DU}: on $M"
  fi
}
```

I tend to use `/d/e` for mounting drives to save a couple of keystrokes. I symlink `/media/user`
to `/m` on my systems (I am the only regular user), put local mounts in `/d/`, such as `/d/c`,
generally enumerating most internal drives (e.g. 4 in an HP Microserver) as `/d/a`, `/d/b`, and so on,
kind of a throwback to Windows drive letters (which many Linux diehards will consider an abject
abomination worthy of eternal damnation). Then sshfs mounts on my LAN go in `/n/machine` where
again for keyboard convenience I use shorthands such as `/d/ha` for `halfling`.


## USBIPD-WIN
There is a way to grant *low-level* access to a USB drive, so that
the Linux filesystem driver is used, not the Windows one. For most use
cases (i.e. a USB drive formatted with FAT, Exfat, or NTFS)
this is overkill at best. For this [see here](https://learn.microsoft.com/en-us/windows/wsl/connect-usb).