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Unable to boot from USB with new hardware

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Ive built a new system with updated hardware for my Unraid machine but I cant get it to boot from USB.

I have selected "UEFI: SanDisk, Partition 1" as my Boot Option #1 but I just get BIOS each time.

Im tring to mess with Fast Boot settings but no luck yet.

If I plug in another USB with a Windows Installer on it that boots. If I put the USB drive back in my old server Unraid still boots and works.

New motherboard is Gigabyte Z490 UD.

Solved by darber

  • Community Expert
8 minutes ago, darber said:

Ive built a new system with updated hardware for my Unraid machine but I cant get it to boot from USB.

I have selected "UEFI: SanDisk, Partition 1" as my Boot Option #1 but I just get BIOS each time.

Im tring to mess with Fast Boot settings but no luck yet.

If I plug in another USB with a Windows Installer on it that boots. If I put the USB drive back in my old server Unraid still boots and works.

New motherboard is Gigabyte Z490 UD.

Is old one booting uefi or legacy? is the folder on drive EFI or EFI-

 

Fastboot should be disabled.

  • Author
4 minutes ago, SimonF said:

Is it. boting uefi on the old one or legacy? is the folder on drive EFI or EFI-

If I put the USB drive into a Windows PC it says it needs formatting.

Ill boot the old Unraid server and see if its UEFI or legacy.

  • Author

Old server is UEFI too. I wonder if its a CSM thing, I see its on on the old server but I cant enable it on the new one.

  • Community Expert
32 minutes ago, darber said:

If I put the USB drive into a Windows PC it says it needs formatting.

That is not a good sign as the USB drive is formatted as FAT32 which is a standard format that Windows should be able to read.

  • Author
24 minutes ago, itimpi said:

That is not a good sign as the USB drive is formatted as FAT32 which is a standard format that Windows should be able to read.

yeah not sure whats up, it still works flawlessly in my old PC

  • Author

If I connect to the 'flash' SMB share I can see the folder EFI-

Should I rename this to EFI? Im just worried I might get myself into a situation where I cant boot unraid on either of the PCs.

  • Community Expert
2 hours ago, darber said:

Should I rename this to EFI? Im just worried I might get myself into a situation where I cant boot unraid on either of the PCs.

This just enables the flash drive for UEFI booting in addition to legacy booting.

I had a issue with this once
if its an existing used usb and your putting it in a new pc
DELETE all the network config files
this locks it up for ALONG time, it will eventually time out but it takes FOREVER
Deleting the network config will let it boot on up and then you'll have to setup the network again

 

  • Author
  • Solution

I fixed it.

 

I needed to enable CSM but I couldnt turn it on, every time I tried I would save and exit BIOS and it would sit at a blank screen.

Then after a reboot and entering BIOS again it was turned off.

 

The fix was to disable secure boot, once this was off I was able to enable CSM and could then boot from the Unraid USB.

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