put in ur non modded iso then press install then quickly hot swap to the modded iso that should work it works for me when i get that error

OKCmaniac wrote Everytime i try installing woormys it says no hardrive availible. And when i just hotswap to play it it is stuck at the pictures and just keeps on showing the pictures, please help.

you uselly have to do three missons till you get to threes a crowd and hopefuly it works

I often have the same problem and the best fix I have for it is:
Turn off Auto-Play in Xbox console settings, then on the Dashboard with GTA IV running click X for game options, Then click install. It will bring you to the point where you pick a storage device. Then Hotswap, and after the hotswap click the device you wish to use. Hope I helped

those dont work i have tried them all

The first response to this thread is the way to fix it.

Put in the retail disc.

Then click install.

Wait until it hits 0% and then quickly hotswap the ISO disc over before it hits 1%