[Problem] How to make a Disk Drive Bootable in UEFI mode?

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#1 | [Problem] How to make a Disk Drive Bootable in UEFI mode? datum

Today 3:18 pm (Last edited: Today 7:22 pm)

Hi,

The UEFI bios of Fujitsu S920 (AMI Aptio) detects disk as UEFI only if it is conneced via USB (USB-SATA converter). If I connect disk directly to SATA (or mSATA) port it detects it as �normal disk" (non-uefi) and it doesn�t boot.
Using MMTool and guides from this forum I was able to add support to NVME disk. Such disks are now detected by BIOS but also as "non-UEFI".

Does anybody know which BIOS module is responsible for UEFI disk detection? Maybe changing such module to more recent version would solve the problem? Any help or hint in solving the problem is very appreciated�

Edit by Fernando: Thread title specified and shortened

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#2 | RE: [Problem] How to make a Disk Drive Bootable in UEFI mode? datum

6 minutes ago

@pswid Welcome to the Win-RAID Forum!
If your Fujitsu S 920 has an AMI UEFI BIOS, it should support booting off all SATA/mSATA/PCIe connected Disk Drives in UEFI mode. So a specific modification of the BIOS Region (= part of the mainboard's BIOS Chip) is neither needed nor makes sense.
Nevertheless there are some requirements:
1. Within the BIOS GUI settings (usually within the "BOOT" section) booting in UEFI mode must be enabled or at least allowed.
2. The related disk drive must have been formatted by using the GUIMode Partition Table (GPT) and contain a usually hidden EFI boot sector.
3. PCIe connected M.2 SSDs, which support the NVMe or AHCI protocol, may need a specific EFI BIOS module.

Zitat von pswid im Beitrag #1
Using MMTool and guides from this forum I was able to add support to NVME disk. Such disks are now detected by BIOS but also as "non-UEFI".

Users of a mainboard, whose BIOS natively doesn't support booting off an NVMe SSD, are not able to boot off the NVMe SSD named "PATA_SS", which may be listed within the "BOOT" section of the BIOS. The required entry has to be "Windows Boot Manager" and will appear after having successfully installed Win10 or Win11 in UEFI mode onto the NVMe SSD. For details please look into the "This is what you should do" chapter 4 of >this< guide.
I hope, that this may help you to solve your problem.
Regards
Dieter (alias Fernando)

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Cant figure out what bios I need for this motherboard. Please help. �

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