Here is the most likely problem.
Wii u usb storage devicewii u usb storage device.
It probably won t format if its using the new 3 0 usb cable as the wii u is only compatible with the 2 0 usb cable.
There s absolutely no reason from a performance standpoint that it would need to be formatted for one wii u and one wii u alone.
Our complete faq on using external storage with the wii u may also be helpful.
You ll need a y cable with the 3 0 usb compatibility which will take two usb slots on the console to supply enough power but that s why it won t format.
To solve use a y cable to draw power from 2 usb ports simultaneously.
The fact that it show in cp suggests it s not broken.
Plug the hdd into the usb port s on the back of the wii u.
Wii u wii u.
Devices that draw their power from usb ports are known as bus powered devices and are not recommended for use with wii u.
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To ensure maximum performance between your wii u and an external storage device we recommend using a hard disc drive hdd with a dedicated power source i e using an a c adapter.
Because of this the hard drive isn t getting enough power from the console.
Anyone going through this same problem.
If you re using a drive with external power make sure it s plugged into its own power outlet.
Due to the wide range of external storage devices usability and performance will vary.
When downloading software or playing a game saved to an external storage device you can only use one usb storage device with the wii u console at a time.
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The usb ports on the wii u doesn t supply enough power to the hdd so when it triesto spin up to write data it dies.
I m not a nerd i.
For the best results with storage devices we recommend using a hard drive with its own power supply that connects to the wii u via the usb port on the console.
I m tryna format a 55gb external hard drive on the wii u and it s been stuck on checking usb storage device forever.
Not to mention a usb storage device formatted for the xbox 360 can be used on any xbox 360 whereas a drive formatted by a wii u can only be used for that specific wii u.
Wii u uses a file system that windows does not recognize.
Multiple usb storage devices can be used one at a time to store your downloadable wii u content but the wii u needs to be turned off to reconnect a usb storage device.
So how long does formatting usb storage take exactly.