Hacking Is it possible to install CFW with an External Hard Drive?

[RedoLane]

I have a 1TB Kingston External HDD, and I've read that an SD card is required in order to install CFW on the Wii U.
But is it possible to do that with my external hdd instead?

 

[Lacius]

You require an SD card.

 

[Kafluke]

I have a 1TB Kingston External HDD, and I've read that an SD card is required in order to install CFW on the Wii U.
But is it possible to do that with my external hdd instead?

Don't you think if that were possible youd see it in all the guides?