USB 3 cards should all be bootable by now?

Discussion in 'Mac Pro' started by macmesser, Mar 11, 2016.

  1. macmesser macrumors 6502a

    Joined:
    Aug 13, 2012
    Location:
    Long Island, NY USA
    #1
    Should I be checking bootability on currently available USB 3 cards for Classic Mac Pros or should they all pretty much be bootable? If it is not safe to assume they will be bootable in latest OS, what's the reason (other than they weren't made that way :p)?
     
  2. rawweb macrumors 6502a

    rawweb

    Joined:
    Aug 7, 2015
    #2
    No USB 3 PCIe card is bootable in a Mac Pro 1,1-5,1 as there is no driver support until an operating system loads drivers. USB 3 is not in EFI.
     

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