To make sure I'm on the same page with you, you have two video cards in your
Mac - the stock Radeon HD 5770 that this model ships with, and the the RX580
you added in, yes? And upon boot, the Mac only shows the boot select screen on
the built-in card and not the RX580, and you concluded it was doing this
because of a firmware issue on the RX580?
Assuming all that is correct, then I assume normally when the Mac Pro boots
(can't say for sure since I don't have one, let alone one with two video cards
lol) the boot screen appears on the main card because that's what the Mac's EFI
BIOS is configured to do, and if that's the case there are two possible
scenarios:
1) The EFI is set to only display on that specific model (or possibly even
serial! You know how Apple is with their hardware lol) of video card, and won't
display it on any other (so you're out of luck)
2) The EFI only displays these options on what it sees as the "first" video
card, in which case removing the factory one altogether (or swapping their
order) might do the trick.
I would assume scenario 2 is most likely the case, so I would try removing the
factory card altogether and see what happens. If there's any EFI interface you
can access, you could try looking for an option for this as well. Maybe it's as
simple as changing a setting.
Regardless, I don't think VMWare will allow enough direct access to the
firmware on any device in the Mac for that method to work. You'll have to boot
from CD to update firmware if it does turn out to be necessary to do so.
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, April 2, 2020 1:30 PM, RJ Givens drummerguyservi...@gmail.com
wrote:
>> On Apr 2, 2020, at 10:16 AM, Eric Auer e.a...@jpberlin.de wrote:
>> Hi! Some ideas regarding the possibility to use native
>> Mac tools for your RX580 graphics card BIOS update task:
>> http://blog.greggant.com/posts/2018/05/07/definitive-mac-pro-upgrade-guide.html#efi-flashable
>> https://www.reddit.com/r/macpro/comments/al3kk2/flash_rx_580_to_show_boot_screen/
>> Apparently ATI / AMD is not very helpful, but
>> maybe you get some ideas from those forums :-)
>
> I’ll check those out.
>
>>> There is no boot screen with the rx580, which is why
>>> I need to flash the firmware on it.
>>
>> Why do you need a boot screen? That sounds like
>> some very low priority moment to have graphics?
>
> I need the boot screen to be able to boot from the Freedos Disk, otherwise
> the computer will boot directly into the startup disk.
>
>>> I got freedos to boot from the disk, and got ATIFlash
>>> running, but it’s only seeing the original card.
>>
>> Does that mean you booted FreeDOS on the raw
>> hardware of the Mac? How have you managed to
>> do that? And what does original card mean, do
>> you have TWO graphics cards? Why not remove
>> the non-ATI while you do that BIOS update??
>> And actually why is having a boot screen on
>> the non-ATI card not sufficient for you? ;-)
>
> I booted to Freedos via an CD. Have to access the bootable cd via the boot
> screen by holding down the option key on start up. If you don’t hold down the
> option key, it just boots into which ever OS is set as your startup disk.
> Yes , I have 2 graphics cards, the stock ATI card that came with the Mac Pro,
> and rx580. The goal
> Is to remove the stock ATI card, but I need the boot screen to access the
> bootable cd. I haven’t found a way to execute the bootable cd from within
> MacOS or Windows.
> They are both ATI card. I swap between Mac OS and windows often and having
> the boot screen is the easiest way to do so. The RX580 stock does not have
> the boot screen EFI, which is why I am trying to flash it to do so.
>
>> In case you prefer another language then English
>> and this is why your mails often feature extremely
>> short descriptions of the situation: Please write
>> in your native language, by exception. There are
>> people speaking various languages on this list so
>> you may be understood better than in English :-)
>> Thank you! Regards, Eric
>
> I think I’ve been pretty clear about what’s going on. Thanks for assuming
> English is my second language.
>
>> Freedos-user mailing list
>> Freedos-user@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/freedos-user
>
> Freedos-user mailing list
> Freedos-user@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/freedos-user
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