Formatting USB Multiple Partitions

After using a USB drive to install a system, the drive often gets divided into multiple partitions. Below are instructions for merging it back into a single partition and formatting it on both MacOS and Windows.

MacOS

For detailed instructions, see: Setting up OpenWrt as a Bypass Router Using Raspberry Pi 4B+ | Kunyang’s Blog

Windows

Open Command Prompt:
```
diskpart
```

List disks:

list disk
Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          931 GB  1024 KB        *
  Disk 1    Online          931 GB  1024 KB        *
  Disk 2    Online         7696 MB  5050 MB        *

Select the disk (be careful not to select the wrong one):
```
sel disk 2
```
Clean:
```
clean
```

List disks again to verify:

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          931 GB  1024 KB        *
  Disk 1    Online          931 GB  1024 KB        *
* Disk 2    Online         7696 MB  7695 MB        *

Press Win + X to open Disk Management, find the USB drive, create a new simple volume, and follow the default steps:

MacOS#

Windows#

MacOS

Windows