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/sys/firmware/efi/efivars is a special file system containing all EFI variables. If the vendor didn't follow best practices, it's possible that your rm -rf wiped important ones and thus confused the firmware.


2

You don't say what kind of Supermicro motherboard it is, or how old. Some motherboards have a last-ditch failsafe BIOS update method; often it involves hooking up a floppy drive, putting in a disk with the new BIOS, and then setting a jumper or hitting a key combination on power-up. That may be your best bet, if it's available. On Sun workstations we used ...


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Check the DIMMs (ram bars) to see if they need to be paired and placed in a certain order. This is an older model (2007ish?) and those had finicky DDR2. Plus, ECC/registered memory itself is super picky. There literally may be a certain order and pairing the memory needs. I ran into this all the time with SC1425's. Something to do with the chipset as well. ...


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If the slot seems to be the problem you can visual inspect it. Check if it is not oxidized. Usually remove/insert of a memory module will clean the oxides. Besides that the slots being broken, I would test for: power supply - check the server's hardware log. memory controller - which nowadays is part of CPU - swap CPUs to isolate the problem. ...


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Fantastic. I had this problem with a Fedora 22 Live image on an USB stick created as per UEFI boot of USB sticks using livecd-iso-to-disk --efi --format --reset-mbr Fedora-Live-Xfce-x86_64-22-3.iso /dev/sdX Which gives a bootable GPT-organized disk with a VFAT partition. Then I tried to myy a ZOTAC Nano CI320 using that stick and found myself in a EFI ...


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Get mainboards with a "-F" in the product name. Then you have IPMI and can even flash a faulty BIOS. It requires a key from Supermicro to activate this feature which is not for free, but you can order a demo key which helps in this case. You get it relatively quick within 1-3 workdays. The 2nd flash area can also be fully impacted by a faulty flash process, ...



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