Windows 10: fat32 efi partition on OS disk and bootloader showing in bios

after i put a friends laptop hd in my computer and fixed his. i have a strange little 99MB fat32 efi volume\partition on the OS disk. and i never saw it before. and i have 2 boot loaders in bios. wont boot without one of them being selected.

is it supposed to be there? can i remove it?

and what can i do about the boot loaders? does fixmbr work?

:)

 

How disable automatic setting of start up disk in UEFI in Windows 10

I have 2 disks and UEFI motherboard.

The first disk is used for boot and in an EFI partition is Clover boot loader. On that disk are several OS.

On the second disk is only Windows 10 also with an EFI partition.

Clover bootloader shows me all my OS including Windows 10.

My issue began approximately 3 weeks ago. Every time I boot into Windows 10 it changes my start up disc order and the disk where is Windows 10 installed is the first. I can no longer boot to any of my other non-Windows OS unless I edit in UEFI the
start up disk order.

Because I didn't upgrade UEFI or Clover I suspect some Windows 10 update that started to test if his EFI partition is correctly set as a boot disk.

 

Windows 10 Install on Asus Mainboard

I suppose it depends on the installer used and how it was created.

I would usually use rufus and although uefi compatibility is being used I would switch os type to Other os in bios just because I do not want any uefi or efi system reserved partitions created.

usb flash is ntfs and not fat32.

I prefer C partition only spanning the entire disk and reduce it after the install.

Keeping in mind disk is mbr and not gpt.

 

is it safe to use the delete volume override in diskpart on the hidden 99mb fat32 on the os drive? that's my closest thought. since it's the os drive and i like this computer i wont do anything i dont know can damage it *Smile

 

Do you still have two hard drives connected? Also, you need to post a screenshot of disk management so we can see what you have. Be sure to widen the columns so we can see all the information in the columns.

Disk Management - How to Post a Screenshot of - Windows 10 Forums

 

what do you mean with 2 hard drives connected? i'm just done with using samsung migration software to clone the ssd 840 series over to a ssd 840 evo. here is a screen shot of disk management. while you read this i will reboot and unplug all the drives which is not the OS hd and see if it will boot only with the ssd with the OS
.



Edit: it booted with only the os ssd.

 

also i got this for you if it's interesting *Smile

 

The 99mb FAT32 partition is where the computer is booting from - it has to stay there. The partition marked as "system" contains the boot files. The partition marked as "boot" contains the operating system that is loaded by the boot files. I know - Microsoft labeled them bass ackwards, in my humble opinion.

 

diskpart is showing 1 gpt disk

disk management is showing 6 of them....

but as stated the disk is GPT and has the windows OS - so yes the partition has to be there...

 

the cmd windows is from after i disabled all the other hdd's. thought of something. this is not a laptop. this is my pc. is there always a recovery partition? since i didn't make one. i had a clean install and i can't remember having that until after i fixed my friends laptop. i put his laptop hdd in the computer. and on windows 10 is the efi-partition "included"?(i guess it is) *Smile

and what can i do with the 2 boot manager present in bios? never saw them there before.
without selecting either of the boot manager in bios called "boot manager" as first i can't boot.

 

A clean install of Windows 10 will create a recovery partition. The "boot manager" entry in UEFI is the EFI System Partition that the computer boots from.

EasyUEFI will help you identify and rename what the UEFI boot entries are:
UEFI boot manager, Windows To Go Creator, All-in-One Microsoft Windows Setup software - The EasyUEFI Development Team