Installation guide

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Options id=usb port number
Specifies the USB port number to be set.
state={on|off}
Specifies whether the USB device will be enabled.
on
Enable the USB device.
off
Disable the USB device.
format
Format the device, using a default file system type of ext2. To format with
an alternate file system type, use the “fstype” option.
fstype={ext2|vfat}
The file system type.
ext2
ext2 or second extended filesystem.
vfat
Virtual file allocation table filesystem.