cmp '10 upgrade

I have a 5,1 MP that will only boot from a USB drive and will not boot from SATA. When the usb drive is inserted it will recognize the the drive as a bootable SSD via Sata, however when I setup as boot drive and reboot it goes to the folder with the question mark. What can I be missing?

Hey guys and girls, thanks for all the time reading your threads helped me reviving my newly cMP 5.1 from 2010. Now its time for me to ask you how to optimise my cMP to use it in the best supported way. My setup: cMP 5.1 dual CPU --> getting the x5680 in the next days 32 GB Ram (8x4gb) -->...

Hi guys, this is my first post after lurking for many years and finally scoring my own vintage MP5,1. I'm making no headway with my own troubleshooting and hope to get some good ideas from the community. In short, I am now faced with a black-screen stuck-at-boot scenario, after a seemingly okay...

Hi, I tried to understand the state of things as far as FileVault (aka APFS-Encrypted) on cMP units is concerned. Read some threads here and on MacVidCards' blog, and still confused. I have a MP4,1 updated to 5,1 with a vanilla RX580 and 10.13.6. Considering whether to update to Mojave or...

I thought I'd share the results of a recent round of upgrades made to my mid-2010 Mac Pro 5,1. Running High Sierra 10.13.6. Old Xeon W3565 @ 3.2GHz (Single quad-core Nehalem) 32 GB 1066 DRAM (4 x 8GB) Sapphire Radeon 7950 Mac Edition (slot 2, x16) 4x Crucial 1TB SSDs in the bays. (4 1TB backup...

Hi everyone, A few threads over the last few months address the issue of NVMe SSD PCIe adapters and the new life they can offer to the cMP. After reading most (all?) of them I was convinced about the highpoint 7101A but stumbled on the newer 7102 then replaced by the 7103. Major difference...

Hi guys, I'm new here, but I had a question regarding powering my Vega FE dual 8pin gpu without going the pixlas mod route. my current setup is: drive bay 1: mushkin 1tb drive drive bay 2: seagate firecuda sshd 1tb dive bay 3&4: empty mini 6pin 1: open mini 6pin 2: connected to 6pin to dual...