I spend today building a new UNRAID server but could not get it to boot into UNRAID although I believe I have the right settings enabled in BIOS. It has all new parts which I'll list below.

AMD Ryzen 9 9900x

MSI X870E-P WIFI AM5 Motherboard

DDR5 6000Mhz CL36 Crucial 2x16gb memory

3 16TB Toshiba N300 7200RPM

Crucial P310 1TB Gen 4x4 NVMe

I booted into BIOS fine and used only UEFI as recommended for modern systems. I also tried all ports with both a 3.1 Sandisk and a 2.0 Lexar USB drive (both 32gb) and I used the make_bootable batch file after all he motherboard USB ports did not work. I could not find an option for fast boot in the bios but I don't know if this would be the problem. Furthermore, I was able to launch into Windows Installation Media so I don't believe it was a hardware issue.

Where should I go from here to continue troubleshooting?

55 minutes ago, dfdonea said:

Where should I go from here to continue troubleshooting?

You don't say what you mean by it won't boot into Unraid. Do you have a monitor attached? If so, what do you see on the screen?

One thing you can check; you did everything in the BIOS to boot UEFI but did you tell the Unraid USB flash to boot UEFI?

There is a folder on the Unraid flash drive called EFI- If it still has the trailing - character, the flash drive is trying to boot legacy. To tell it to boot UEFI, the folder needs to be renamed to EFI (remove the trailing - character). If it is currently named EFI and still won't boot into Unraid, this is not the problem.

Just now, Hoopster said:

You don't say what you mean by it won't boot into Unraid. Do you have a monitor attached? If so, what do you see on the screen?

One thing you can check; you did everything in the BIOS to boot UEFI but did you tell the Unraid USB flash to boot UEFI?

There is a folder on the Unraid flash drive called EFI- If it still has the trailing - character, the flash drive is trying to boot legacy. To tell it to boot UEFI, the folder needs to be renamed to EFI (remove the trailing - character). If it is currently named EFI and still won't boot into Unraid, this is not the problem.

There is a monitor attached. It is just a blank screen. I already have no dash on the EFI folder. It didn't have one to begin with. I also have tried to use WEB GUI from the address/name.

Edited January 11Jan 11 by dfdonea
Update

Prepare another flash drive using memtest86.com and see if it will boot.

2 minutes ago, trurl said:

Prepare another flash drive using memtest86.com and see if it will boot.

I am away from the location where the server is at now but I will test that in the morning when I am back

13 hours ago, trurl said:

Prepare another flash drive using memtest86.com and see if it will boot.

I ran the system with memtest 86 and it passed but still no luck. I also tried a new 3.0 micro center usb which worked on the system I already use. I am already on the newest version of BIOS for the motherboard. What should I do next?

Edited January 11Jan 11 by dfdonea
Update

There have been cases in the past where the flash drive prep tool does not work properly. Try the manual install method detailed here:

https://docs.unraid.net/unraid-os/getting-started/set-up-unraid/create-your-bootable-media/#manual-install-method

7 minutes ago, Frank1940 said:

There have been cases in the past where the flash drive prep tool does not work properly. Try the manual install method detailed here:

https://docs.unraid.net/unraid-os/getting-started/set-up-unraid/create-your-bootable-media/#manual-install-method

I tried this yesterday on the 2.0 flash drive. I just tried it on a 3.0 but it seems to yield the same result even on 7.2.2 instead of the latest release.

So, you are able to boot a memtest86 flash drive in this computer.

Can you boot a different computer with your prepared Unraid flash drive?

Just now, trurl said:

So, you are able to boot a memtest86 flash drive in this computer.

Can you boot a different computer with your prepared Unraid flash drive?

Yes I was able to boot with memtest and had no fails in the test. I also can get to windows. I am not in a spot now with a computer other than this system. I can try when I get to another one. If it boots to another system, what should I try on this one?

1 hour ago, trurl said:

So, you are able to boot a memtest86 flash drive in this computer.

Can you boot a different computer with your prepared Unraid flash drive?

It booted up instantly on a different System with a 9800x3d and MSI B850i with 2x16 G. SKILL CL32 6000 MT/s memory. I am not sure where to go from here since I already verified the memory working in the other system and the motherboards are both MSI.

17 hours ago, dfdonea said:

used only UEFI

Have you tried legacy (nonUEFI, EFI-)

One solution that seems to have worked for other users having boot issues is to use Rufus to format the flash drive.

Just now, trurl said:

Have you tried legacy (nonUEFI, EFI-)

I think I did but I am not sure if I did it correctly. Do I need to enable CSM and add a dash to the EFI folder? Or just enable CSM and try that way?

Just now, dfdonea said:

I think I did but I am not sure if I did it correctly. Do I need to enable CSM and add a dash to the EFI folder? Or just enable CSM and try that way?

You want the flash drive set to boot using UEFI after doing this (I.e. no trailing ~ on the EFI folder).

Just now, itimpi said:

One solution that seems to have worked for other users having boot issues is to use Rufus to format the flash drive.

I don’t believe this is the issue because it booted on a different system fine. I can try though. Will I have to do the manual install afterwards or no?

Just now, itimpi said:

You want the flash drive set to boot using UEFI after doing this (I.e. no trailing ~ on the EFI folder).

That is how I have it now but it wasn’t working. Here I am just asking how to do it trying in legacy

Just now, dfdonea said:

That is how I have it now but it wasn’t working

Was that after formatting with Rufus?

21 minutes ago, itimpi said:

Was that after formatting with Rufus?

No, I had used the Unraid creation tool and done it manually with windows format but I haven’t used Rufus. trurl recommended I try legacy boot first but I can try both when I get back home.

4 hours ago, itimpi said:

Was that after formatting with Rufus?

I just attempted a format with Rufus using settings from a post that JorgeB replied to a year ago, then attempted a manual install. Still no luck. SHould i try legacy mode with CSM enabled and have the Batch file run on the drive? Also, will I need to add a dash to the EFI folder when I attempt this as well?

If you are not booting UEFI folder must be EFI-

11 minutes ago, trurl said:

If you are not booting UEFI folder must be EFI-

I just tried this and it loaded into something but there are just a bunch of error messages. It says "Drive is too large to handle, using only 1st 8 GB" and then ends by stating "illegal partition table". Also, it says FreeCom version 0.86 before giving me a place to enter commands on a C drive?

Edited January 12Jan 12 by dfdonea
Typo

You must have something other than Unraid installed on the flash

Just now, trurl said:

You must have something other than Unraid installed on the flash

I downloaded and extracted the .zip file straight from the manual installation section in the guide. I forgot to run the batch file though. After running it, UNRAID OS finally loads! Is there any underlying reason which could have been the cause for UEFI not working?

38 minutes ago, dfdonea said:

Is there any underlying reason which could have been the cause for UEFI not working?

As I recall, that makes the disk bootable. (Makes the BIOS see the disk as bootable media...)