When using Aztrino 1.7 or higher, just install the hard drive and perform the hard disk format.
The drive doesn't has to be pre-formatted.
With earlier versions it is also possible to format the drive, but the format procedure creates the wrong folder name.
I myself use OpenRSi as an image, but I can't seem to format the HDD. It return a timeout error. So, if necessary, I use Aztrino to do the job for me.
I am using a Samsung HD103SI hard drive.
Kind regards,
Lange