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4.1 to 5.1

  1. Looser_23

    MP 1,1-5,1 my Story with 2 two 4,1 > 5,1 cMPs and questions and concerns going forward

    Hi! I'm new to this forum and I want to tell you my cMP story and ask you for advice on some issues I still have. I bought a cMP 4,1 at the tail end of last year that had its firmware upgraded by the previous owner already. This is my first Mac ever and I'm not sure I would want another model...
  2. kk3mpp

    MP 1,1-5,1 installing windows 10 / 11 on Mac Pro 5.1

    hello there, i'm just wondering if i can get windows 10 or 11 on my Mac Pro 5.1... my Mac Pro 5.1: 3.06 GHz 6-Core Intel Xeon / 16GB memory / GTX 680 2GB (non-flashed) / Big Sur on NVMe SSD 512GB (using OCLP) i had windows 10 (with bootcamp drivers installed via brigadier) on SATA disk, which...
  3. ccrivia13

    MP 1,1-5,1 Mac Pro painfully slow after firmware upgrade 4,1 to 5,1

    I’ve successfully upgraded the firmware on my 4,1 Mac Pro to a 5,1 (now officially running High Sierra). Everything worked perfectly fine until I enabled SIP again. Now everything runs painfully slow, just opening Launchpad for example takes what feels like ages. Also, if I want to open apps...
  4. bvega

    Windows 10 Bootcamp on High Sierra (Mac pro 4.1 to 5.1) it is posible?

    Hi everyone i have some issues trying to install windows 10 on my mac pro 4.1-5.1 Everything is fine until i have to install the drivers via bootcamp assistant (already on win10) the setup just crashes trying to install the Intel Chipset Driver. Then the sound from an unplugged device (windows...
  5. B

    Resolved 2009 8-Core 4,1 - 5,1 suddenly stopped booting

    About 9 months ago I flashed my 2009 8-Core 2.66 GHz Mac Pro to 5,1 firmware and upgraded the processors to x5680s which I bought on eBay and de-lidded. I've been running Sierra 10.12.6. Things were fine until a few weeks ago, when the following symptoms started happening erratically: 1...
  6. B

    Mac Pro 4,1 to 5,1 RAM slot 1 not recognized

    Just did a 4,1 to 5,1 upgrade on my 2009 Mac Pro running 10.11.6 El Capitan. All is well EXCEPT that RAM slot 1 isn't recognized. Before: 2009 Mac Pro 4,1 2 x 2.26GHz quad-core After: 2009 Mac Pro 5,1 2 x 3.33GHx (x5680) hex-core Firmware update went fine. Both CPUs are recognized in...
  7. SolidCake

    MP 4,1 flashed to 5,1 won't boot after FileVault

    Hey guys, Recently I overhauled my Mac Pro 4,1. I flashed it to 5,1 and upgraded the CPU to 2 x Xeon X5690's, which I successfully delidded myself *proud*. I also upgraded the RAM to 32GB 1333MHz and OSX is running from a Samsung EVO 850 @ 500GB. When I wanted to encrypt the drive, using...