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B450M Steel Legend can't boot

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Auron View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Auron Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2020 at 2:35pm
Originally posted by Xaltar Xaltar wrote:

I say this every new launch, before updating to support new CPUs wait for a few
months so the AGESA is mature. The only time I would update during a new launch
is if I already have the new CPU in hand. AMD is still terrible with launching
before the AGESA is mature.

Some of us update for the challenge/fun of it but we do so knowing the risks.

B450 boards do not support Ryzen 5000 at this time. I believe there are some
rumors that it will be supported at some point but nothing official, yet. As far as
I am aware the support will only happen some time in the beginning of next year.


This might sound like a silly question to you but how does AGESA effect virtual machines ? I was looking around on youtube wanting to do a GPU passthrough to a VM and the guy made mention about going to a BIOS with a certain AGESA version.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2020 at 5:38pm
The AGESA is basically a firmware roadmap for all the functionality integrated
into the CPU. A while back now all motherboards contained a northbridge and
southbridge chipset, these controlled the vast majority of board functions and
put control over features predominantly in the hands of board manufacturers, at
least to a much larger extent than today. Now, the northbridge, or it's equivalent,
is integrated into the CPU (both intel and AMD).

This is one of the key reasons boards get blamed for problems more now than ever
before. Add to that the fact that the memory controller is likewise now integrated
into the CPU and you start seeing a pattern.
As for VMs, the AGESA controls just about every feature that would have been on
the northbridge, including critical functionality needed for VMs. Given how much
of a niche VM users are, AMD will often overlook bugs and glitches in this portion
of their code, choosing instead to focus on more broadly relevant issues. That
is why certain AGESA versions are better and worse for things like VMs and other
less commonly used features.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Auron Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 2020 at 9:53am
Seems the BIOS page for the B450M Steel Legend now has a changed description for the 3.60 BIOS - Supports Ryzen 4000 G-Series and 5000 series CPU.
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