[Memphiz]

What da-anda said is valid for RBPI1 B+ and RBPI2 only. And i have my hdd running on the pi2 too now with this 1.2A feature

[sublow]

Unfortunately a power supply like that won't fit in the stand.

I'll give max_usb_current=1 a try with one of my current 2A power supplies if the new cables do not work.

[sublow]

I've finally got it working with the following setup.

New Y cable with 28AWG wiring, 2x iPhone chargers and setting max_usb_current=1 in the config.txt.

Thanks for all your help.

[sublow]

I thought I'd post a link to the cable I'm using if anyone else needs my not ideal setup.

http://www.ebuyer.com/268063-startech-co...usb2hauby3

[Bosse_B]

Seriously just go straight to the source if your in the UK and get this:
https://www.modmypi.com/5v-2A-modmypi-ra...wer-supply

Notice the ending comment on that webpage:

USB to Micro USB Cable NOT INCLUDED

This practically guarantees that the full use of the charger/power supply will not be reached because an inferior cable will be attached!

By simple googling I found this webpage with a review of cables.
HTH