New mod questions

[Jammasta]

I have a few questions about modding my wiiu. How much HDD space would I need and how many would I need? I was reading I would need 3.
SD (for retro), External HD (for wii/GameCube), and flash for WiiU games?

Also which emulators can work out of PSP, 3DS, and DS? I read that PSP can be glitchy and 3DS isn’t possible. Also for DS do I have to inject games into existing DS games. Only game I have is Brain age.

 

[V10lator]

- SD for homebrew and stuff, this gets into the Wii Us SD slot.
- Either one HDD for everything (injecting Wii stuff) or one for Wii U and one for vWii. Don't use flash as Wii U USB storage!

 

[SDIO]

How much space you need depends on how many and which games you own. For Wii U, you need to extend memory over USB.
For vWii, you have a few options. You can do VC inject, which allows you to install them to the storage belonging to the Wii U and directly launch them from the Wii U menu.
If you want to launch them the classic way, via an USB loader, I would suggest to not bother with USB storage for the vWii but instead just use a bigger SD, you can also start vWii games from there. Today I just saw a 256card for 15€ or 512gb for 30€. So there is no need to bother with an extra HDD just for vWii and all the headaches coming with that (like hiding it from the Wii U side and power supply)