[SOLVED] HDD gets mounted and then unmounted again

[goodappetite]

(18th Mar, 2015 08:36 PM)IriDium Wrote:  It sounds like there is a power issue with the HDD.
You haven't explained your configuration in "Please read before you post" so I will have to guess.

How is it powered?

If not powered then you need to use a powered hub. If it has it's own power supply, then please post the output from dmesg via pastebin.com.

RPi A,B and + only supply 100ma to the USB port.
RPi2 only gives about 400ma.

A standard HDD requires around 490ma.

As the HDD is a slim one, it doesn't have a separate power supply. It is connected to the RaspberryPi via two USB plugs (one cable that branches off into two USB plugs at the end). I cannot conceive how this should be a problem as the HDD had been used for many months before this issue came up.