Or you can just follow the screenshots genet provided. Remove the Windows installation media and restart the computer. List volume Note: Note the volume letter where the Windows OS is installed.īcdboot X:\windows Note: Replace "X" with the volume letter of the Windows OS partition.īCDBoot copies the boot files from the Windows partition to the EFI System partition and creates the BCD store in the same partition. Select partition # Note: Select the Windows OS partition or your data partition. Select disk # Note: Select the disk where you want to add the EFI System partition. Run the following commands at the command prompt. On the first screen, press SHIFT+F10 to bring up the command prompt. Boot the computer using the Windows 7/8/8.1 installation media.
#Diskpart create efi system partition how to
How to create the missing EFI System partition, if you do NOT have the unallocated space available for the EFI System partition. Genet, another member of provides 3 options for us to choose in case we have a different disk map, but I think the third option will be just the general solution, no matter there's unallocated space on the disk or not, we can shrink any partition to create some space unallocated: I saw various instructions on how to reconstruct the EFI partition, but they all assumed that the EFI partition is still there, which in my case it isn't.ĭoes anyone know what I could try, or at the very least how I can get my data off that drive and re-install Windows? Windows repair using the original install media didn't work. To complicate matters the Windows install is on a RAID0 array. I accidentally deleted the EFI partition, required to boot into my Win 8.1 installation - unbeknownst to me that EFI partition was on a different disk to where my Windows is located.
user naujoks accidently deleted the EFI partition and fails to boot.
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