A couple of questions - what format is the hard drive in (FFS, SFS, PFS... ?) and how is it being linked to the AROS machine (USB interface, directly via PATA cable, PATA to SATA interface... ?) To agree with what has been said above, it is possible to read FFS or SFS formatted AmigaOS hard drives directly in AROS, and this should be doable either via a USB interface or direct PATA connection. However, there is no PFS driver for AROS and I've found PATA to SATA interfaces to be problematic.
Cheers,
Nigel.