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September 12th, 2025 18:49

Issue Booting ONIE Recovery USB on Switch S4048 ON

Hello Team,

I am attempting to recover a corrupted ONIE system on a switch by using a USB drive prepared with the ONIE recovery image.

However, when I select the USB drive as the boot device, the system fails to start and generates the following error:

!!!! X64 Exception Type - 0000000000000002     CPU Apic ID - 00000000 !!!!
RIP  - 00000000BE8EC277, CS  - 0000000000000038, RFLAGS - 0000000000000246
RAX  - 000000000000000D, RCX - 0000000000000000, RDX - 0000000000000070
RBX  - 0000000000000001, RSP - 00000000BF780938, RBP - 0000000000000000
RSI  - 00000000BD327018, RDI - 0000000000000001
R8   - 0000000000000070, R9  - 0000000000000000, R10 - 0000000000000001
R11  - 00000000BF780A58, R12 - 0000000000000000, R13 - 00000000B3BAC498
R14  - 0000000000000000, R15 - 0000000000000001
DS   - 0000000000000030, ES  - 0000000000000030, FS  - 0000000000000030
GS   - 0000000000000030, SS  - 0000000000000030
CR0  - 0000000080000013, CR2 - 0000000000000000, CR3 - 00000000BF63F000
CR4  - 0000000000000668, CR8 - 0000000000000000
DR0  - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000
DR3  - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
GDTR - 00000000BE93BDF0 0000000000000047, LDTR - 0000000000000000
IDTR - 00000000BDB60018 0000000000000FFF,   TR - 0000000000000000
FXSAVE_STATE - 00000000BF7805A0
!!!! Find PE image (No PDB)  (ImageBase=00000000BE8EA000, EntryPoint=00000000BE8EA900) !!!!
 

Moderator

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3.9K Posts

September 15th, 2025 07:35

Hello,

can you try to recreate ONIE Recovery USB Properly)

Dell Networking- How to Create an ONIE Recovery Live Disk | Dell US

thanks

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7 Posts

September 15th, 2025 08:48

@DELL-Marco B​  Hello;

Yes, this is the procedure I followed, but I still have the same problem. I don’t know if it’s related to the BIOS or the EFI shell, and I also can’t find the recovery PXE file on Dell’s website to test the recovery over PXE.

Regards.

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25 Posts

September 16th, 2025 09:10

First, confirm the USB is created correctly. ONIE recovery requires a bootable FAT32 USB with the ONIE installer image. Use tools like Rufus or dd to write the image properly—simply copying files won’t work.

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7 Posts

September 17th, 2025 08:57

@YashSmith​ “The USB has been tested on another switch, and it works fine; but still having the same error on that switch

Regards.

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7 Posts

September 17th, 2025 22:10

@DELL-Marco B​ additional information:

When I prepare a USB drive with the official ONIE image for the S4048-ON, Rufus only allows me to create the media in Legacy/MBR mode. The switch tries to boot, but I encounter errors and ONIE does not start.

 

However, when I test using the ONIE image for a Dell EMC S4100 (which targets the same Intel C2338 CPU), Rufus allows me to prepare the USB in UEFI + GPT mode, and the switch successfully boots into ONIE.

 

Unfortunately, I cannot proceed with the installation because the image is not for my model (S4048-ON).

 

 

This leads me to believe that the official ONIE image for the S4048-ON does not support UEFI boot, while the hardware itself seems to accept it.

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7 Posts

September 22nd, 2025 08:00

@DELL-Marco B  hello;

Any advice to resolve this issue?

Regards.

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