The OS you're using is as important to the physical bios data(version). You may need to update your system bios in order to improve the HD sizing issue(capacity0. In best scenario for you, that's probably 120gb HD or the max. at 127GB. Since, this is a 12yr. system, it maybe too late but checking the Gateway support website, locate your model# and navigate in the legacy section and find out. Otherwise, the other fix is to get a bios chip replacement, but that too may not be cost effective if bios update isn't possible. Its up to you. I don't recall a 17gb size limit.
I have an ancient Gateway GP6 400. It's been working flawlessly for 12 years but has become useless for general purpose computing due to it's limited RAM. Reluctant to scrap a working computer I'm interested in putting in a big hard drive, loading Ubuntu LTS and rebuilding the thing as an automated backup server. I have come across a post mentioning that the BIOS for this computer has an upper limit on the size of the hard drive (17 GB or some such thing). If this is indeed the case, then my plans are doomed. How can I confirm this limitation? Or perhaps someone out there just knows.