How to make the main drive bootable?
How to make the main drive bootable?
I previously used a 512 GB SSD as my main Windows boot device. I replaced it with a new 1TB NVMe SSD and installed Windows there. Now the old 512 GB drive remains unchanged, still running Windows alongside it.
Currently, when I remove the 512 GB drive, the system won’t boot into Windows. Instead, it starts from the 512 GB drive. I think this might be because the older drive has an EFI partition while the new one doesn’t. I can see my current setup here. The drive I want to boot into is C: (top drive in pic).
I’m using an ASUS X99-DELUXE with UEFI BIOS. Can I make the C: drive bootable in PIC format? Is there a way to do this through Windows? I believe adding an EFI system partition would be necessary; if so, could you explain how to do that without performing a full OS installation?
My aim is to completely remove the 512 GB drive, but doing so makes the system non-bootable. I want to use the 1TB drive as both my system and boot drive, and have my D drive for storage. Therefore, I need to create a UEFI partition on the 1TB drive (see pic) and would like to know if this is feasible without a clean install.
It is recommended to disconnect all drives not intended for OS installation. Back up mission-critical data from both drives, then format and erase them. Remove the bigger drive, install the OS on the smaller one. After the installation finishes, you can manually add all drivers to your laptop and later install the larger SSD as your storage device.
I aim to completely eliminate the 512 drive. I already have my D drive (2 TB) available for storage. The person updating me mentioned this. I'm seeking a method that doesn't require a full Windows reinstall. I just want to know if it's feasible to add a UEFI partition to my current main drive, which currently runs Windows 10, so the system can boot from it.
This process can be carried out using an elevated command prompt. If any issues arise, halt execution right away. (Display output screenshot.)
diskpart
list disk
select disk 0
select 1TB OS disk
list partition
select partition x
(select 931GB C: partition, x=1 or x=2, replace x with appropriate number)
shrink desired=500
create partition efi
format fs=fat32 quick
assign letter=H
exit
bcdboot C:\windows /s H: /f UEFI
Last message should be "Boot files created successfully".
What is an Elevated Command Prompt?
Computer dictionary definition for what Windows elevated command prompt means including related links, information, and terms. www.computerhope.com