Windows 10 New systems installed, can't find auxiliary drives

[Keith W]

Are you talking to me or Neemo ?

Let's assume it's me. I am not sure how best to get rid of the 100MB partition. There are utilities (some free) out there which can help you to get all of the spare space on this 3TB disk into one lump (i.e. get the 100MB partition to the end or the front of the disk. You can then make it one partition and allocate it a single drive letter. Try this freeware utility for on-the-fly partition management - Free Partition Manager Software Download Windows PC Server

At the end of the day it's a blank disk so experiment. You have nothing to loose.

 

[Keith W]

One last thought. I am fairly sure the EFI partition needs to be there with a GPT drive. I have it on all my GPT drives but not on my MBR drive. You might not be able to move it so you might be stuck with two partions. Let me know how you get on.

 

[Neemobeer]

The EFI partition is the boot partition on a UEFI booting operating system. You only need one of them, not one on each GPT disk.

From a rescue disk you can use diskpart to prepare the disk

diskpart
list disk
select disk # (where # is the number for the large disk)
clean
convert GPT
create part primary
list part
select part # (Where # is the partition number, should only be one)
format fs=ntfs quick
exit

Then reboot

 

[marcos9999]

Thanks a bunch! The free partition software you indicated worked well. My disk now is in one piece.