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no boot screen

  1. D

    MP 1,1-5,1 **SOLVED** No Boot Screen OCLP RX6600XT

    Hi all, Specs: cMP 4,1/5,1 Monterey 12.6.1 on SATA SSD WIN10 on dumb NVME PCI-e adapter OCLP 0.5.1 Sapphire Pulse RX6600XT LED Cinema Display 24" (A1267) After flashing the 6600 and installing it in the cMP, I cannot see the OCLP boot picker. OCLP is working since the cMP boots into Monterey...
    • dksoutha
    • Thread
    • cmp no boot screen oclp rx6600xt
    • Replies: 11
    • Forum: Mac Pro
  2. M

    MP 1,1-5,1 Mac Pro 1,1 CPU upgrade fail (quad 2.66 5355)

    Hi all, I have a music recording project coming up that looked like a good excuse to resurrect my 2006 Mac Pro 1,1 ... In preparation, I upgraded to Snow Leopard 10.6.8 on a Sandisk 512Gb SSD and flashed the EFI to 2,1 .. all works fine. The new (used) processors arrived, well packaged and...
    • musvid
    • Thread
    • cpu change mac pro (2006) no boot screen sl9ym won't boot xeon 5355
    • Replies: 3
    • Forum: Mac Pro
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