USB 3 cards should all be bootable by now?

[macmesser]

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 )?

 

[rawweb]

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 )?

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.

 

[erer]

can we add dxe to boot rom now ?

 

[bsbeamer]

Read this thread:
https://forums.macrumors.com/threads/usb-3-x-pcie-cards-for-classic-mac-pro.1501482/

 

[h9826790]

can we add dxe to boot rom now ?

Yes, it’s definitely possible.

And I did able to activate the KT4004 via Clover few months ago when I was trying to activate the GPU via Clover.

 

[erer]

Yes, it’s definitely possible.

And I did able to activate the KT4004 via Clover few months ago when I was trying to activate the GPU via Clover.

as we know now mac pro 4,1 5,1 boot rom can be modıfıed as NVME boot maybe same way we can modıfy bootrom to have usb 3.0 boot. not ın clover..

 

[handheldgames]

FWIW.. macOS does not support TRIM over USB.

 

[erer]

FWIW.. macOS does not support TRIM over USB.

Is it a problem?