R720 Boot Issue After Power Cycle (M.2 SATA with Proxmox)

[Just1n]

Hi all,


I’m running two Dell R720 servers:

• Server 1: R720 with 3.5" drive slots
• Server 2: R720 with 2.5" drive slots
• Boot setup (both): M.2 SATA with Proxmox VE installed

Issue:
After a power cycle, the R720 with the 3.5" slots no longer boots. It seems the M.2 SATA boot was corrupted.


What I tried:

• Reloaded the boot software onto the M.2 SATA using the 2.5" R720
• Confirmed Proxmox is still installed on the drive
• Swapped between both risers and SATA connections

Error Message:
On boot I get:

“Strike F1 to Reboot”
The system does not detect the M.2 drive.

Question:
Has anyone experienced this with R720s and M.2 SATA setups? Any suggestions on how to get the system to recognize the boot drive again?


Thanks,
Justin