Answer to: issues when upgrading HD?You can see yourself on www.nvidia.com that the NVidia specifications CLEARLY say SATA 3 Gbps. When you have do to a workaround, quirk, whatever you name it, to prevent a hardware failure, it's a hardware bug. NVIDIA does not make the chipsets up to Apple's specifications. Apple buys the same chipsets you yourself can buy (or Acer, MSI, Gigabyte, say one). Even on PowerPC Macs, the chipsets are off-the-shelf Motorola or IBM chipsets anyone can buy (given enough money and quantities). If you're competent with replacing computers components, you'll check the specifications of the chipset and see clearly that SATA 3 Gbps is supported, and you'll see that the drives mounted by Apple are SATA 3 Gbps compliant, and question yourself why are they limited to SATA 1.5 Gbps. Then you'll go to buy, and see yourself that no more SATA 1.5 Gbps equipment is being sold, that all drives you can buy new are SATA II and 3 Gbps. You'll put one, because specifications say it MUST work, all the components are (in theory) compatib...
Answer to: issues when upgrading HD?Sorry but Apple's policy has been for a while to allow end-users to upgrade their HDD and RAM without breaking any warranty. This is prescribed by Apple, and guides are provided in their support page. Even Genius Bar employes guide customers through the procedure (depending on the Store). Unfortunately this is not a simple incompatibility problem, but a severe bug in the chipset design by NVIDIA, indeed a bug I've seen in all NVIDIA SATA controllers from the nForce 4. All manufacturers do have bugs, it's usual, normal, expected, Apple is not free from errors, they are humans. But here the problem is indeed NVIDIA, that has Macintosh users quite used to bugs. The ONLY way to upgrade the hard disk, unluckily, is to force it to the slower 1.5 Gbps link. Even using an Apple certified drive will fail if the disk is not forced (like for example, requesting a newer drive shared by another MBP model). Saying this is a rumor it's more politics than technical truth. Regards, Natalia Portillo Apple Certified Macintosh T...
Answer to: issues when upgrading HD?Sorry but the problem DOES exist. Indeed if you check on Apple System Profiler you'll see that the factory installed HDD as well as the ODD are both running at SATA 1.5 Gbps even being able to run at 3 Gbps. I put a new hard disk and after transfering a couple of gigabytes it stuck. I booted on Linux and tried the same, after 5 seconds of transfer the bus reset and the Linux kernel instructed the controller to link at 1.5Gbps, then it transfered 320 Gb of data without a single fail. I downloaded the drive's tool from manufacturer (Samsung), run it on a PC and forced the disk to link always at 1.5 Gbps and now it works flawlessly on the MacBook Pro. This is a known problem, that's why Apple drives come forced to 1.5 Gbps. Regards, Natalia Portillo Apple Certified Macintosh Technician