Can Dell D830 w/ A13 bios support a 1TB size HDD?

As long as the drive physically fits into the bay (2.5" SATA drives come in a variety of thicknesses), then yes it will work.  The mos common thicknesses of 2.5" drives are 9.5mm and 7mm, and since 9.5mm was much more common back in the days of the D830, chances are that this will be a non-issue for you.  The last time there was a hardware/firmware capacity limitation was back in the Windows XP days where using drives larger than I think 137GB required XP SP1 and updated motherboard firmware to add support for "48-bit LBA addressing".  Since then there hasn't been a practical limit to hard drive capacity.  There's a 2TB limit you may have read about, but that's software-related and only comes into play under certain conditions, and since you're asking about 1TB obviously that doesn't matter.