I Cloned A 500GB Hard Drive to a TB on my windows VISTA home premeum desktop. Clone went good but computer still reconizes 500GB. Information program I installed recognizes TB. computer will not allow over 500GB. PLEASE HELPGo to Disk Management...report what it says there...
Most likely the other 1/2 of the drive will show as "unallocated"...thanks alot for your reply patio. got it taken care of. also made some phone calls found out that motherboard may not be able to handle a TB. it is 10 YRS old. love this site. thanks againDon't jump to it being the motherboard.  Chances are that the partition on the new drive is only 500gb and you will need to use a tool such as GParted to resize it to fill the rest of the drive.If in fact the older board WONT handle larger HDD's you still have the option of creating a new partition with the un-used space...Windows will treat it as another drive...use it for storage.There was a ceiling for older BIOS's from AROUND 2001 that could see up to 137GB of a disk. This was because on those systems, the System BIOS would use 28-bits to address all the positions on the disk, allowing the system to address 268,435,456 sectors, with each sector being 512 bytes, this gave a total Disk size of 128GiB, or around 137GB.

Now, technically, if a BIOS used 30-bit addressing, it would top out at addressing around 500GB, however this was not a limitation of any system that I'm aware of, as the 28-bit limitation was itself a holdover from older standards.

I suspect the same as camerongray. When you clone a drive, it creates a partition of the same size on the new drive, so cloning a 500GB to a 1TB drive will create a 500GB partition. With Vista and LATER you can expand the partition into the rest of the disk. More about what BC said. About 14 years ago a new standard was introduced. It was called the 48 bit LBA.
There was even a web site with that name. It has long gone.

The limit was 137 GB, or 127 GB. Therefore it is NOT the problem the OP has.  As noted, the clone program did an exact clone of the drive and kept the size.

You mentioned it got taken care of...care to mention how ? ?