Note that, originally, the Inspiron 6000 did not suport disks bigger than 137GB. You may need to apply a BIOS update to avoid problems with disks bigger than this.
The 137 GB barrier was a windows/controller issue as I recall. The 6000 shipped in 2005. I can't imagine there was a bios issue that late in the game. What makes you think it won't support 137GB?