Open "Terminal" on your computer.
You will now run some commands. You will type them in and then press the return key on your keyboard.
Type in: sudo bash
Type in: diskutil list
Record the disk numbers that you have. In this example there are two disks (disk0 and disk1).
Insert the SD card into your computer.
Record the new disk number. In this example it is disk2.
Insert a new line below
Insert a new line above
Indent current line
Unindent current line
Delete current line
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