USB hard drive no longer mounting

[IriDium]

Well everything seems fine this time around. Apart from the HDD not being recognised.

The hub is recognised (3 port) , attached to it is 1) Ethernet dongle, but then it seems another 4 port hub is attached which has the keyboard attached??

Can you explain what your physical connections are and what is attached.

FAT-fs (mmcblk0p1): Volume was not properly unmounted: Is normal, it relates to the /boot directory (Which is FAT) on the SD card.

You need to be root and the disk unmounted, before you can perform disk utils on it.

FAT32 will only cause problems if you have any file > 2G (Most HD movie files are greater than that)

250GB should not be a problem - I use 2TB (NTFS) without issues.

If anything, it could be your caddy - try plugging it directly into the RPi (If powered).

I think that if you move your USB connections around, it may just work