Why when installing SATA HD to 4600 dimension the BIOS recognizes the HD but not

cev

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Aug 27, 2011
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I installed SATA 320GB HD to Dell 4600 Dimension. BIOS recognized the SATA HD, but said I only had 128GB of memory, not full 320GB. No partitioning was done. why am having this problem? thanks, cev.