When you open Disk Management, the volume size (i.e., capacity) may be misreported in the top pane. The bottom pane, which shows the graphical view, may report the capacity correctly for each volume.Read more
diskpart
REAGENTC.EXE: Operation failed: 3
When you attempt to enable Windows RE by running the reagentc /enable command, the following error may be shown: REAGENTC.EXE: Operation failed: 3 REAGENTC.EXE: An error has occurred. When you attempt to create a USB recovery drive, the following error occurs: We can’t create a recovery drive on this PC Some required files are missing. … Read more
Bcdboot “Failure when initializing library system volume”
When you run the Bcdboot command to copy boot files to the EFI system partition, the following error may occur:
Failure when initializing library system volume.
How to Move EFI System Partition to Another Drive in Windows 10 or 11
The EFI partition is created automatically when you install Windows. However, after adding a second HDD/SSD and installing Windows on that disk, you may realize that the EFI system partition remains on the old hard disk. You wonder how to move the EFI partition from the old hard drive to the new one.Read more
How to Fix the EFI Boot Partition’s ID Using DiskPart
Each partition type is strictly identified by a GUID number. For example, the data partitions (“Basic data partition”) are identified by the GUID ebd0a0a2-b9e5-4433-87c0-68b6b72699c7. The EFI partition has the GUID c12a7328-f81f-11d2-ba4b-00a0c93ec93b.
However, on some systems, the EFI partition may have an incorrect ID assigned for unknown reasons. As a result, the EFI partition may appear as a “basic data partition” when you open Disk Management.Read more
Why is “Extend Volume” Grayed out in Disk Management
When you try to extend a volume in Disk Management, the Extend Volume option may be grayed out even though there is unallocated space on the disk.Read more
[Fix] EFI System Partition Appears in Explorer
The EFI system partition, which contains your boot files and boot configuration database, is hidden by default. However, on some systems, the EFI partition may show up with a drive letter in File Explorer.
How to Find if a Disk Uses MBR or GPT
Knowing how your disks were set up (MBR vs. GPT) is essential for troubleshooting boot issues and Windows Update errors. Master Boot Record (MBR) disks use the standard BIOS partition table. GUID partition table (GPT) disks use the Unified Extensible Firmware Interface (UEFI).Read more
How to Rebuild the EFI Boot Partition, BCD and Boot Files
The EFI boot partition is a FAT32 partition that stores the boot files and the boot configuration data (BCD) to load Windows. Sometimes, the boot partition or the BCD may get corrupted, and the boot files remain unserviceable by the Windows Setup process. In that case, rebuilding the EFI partition and recreating the BCD & boot files should resolve the issue.Read more
“Delete Volume” Grayed Out for USB Drives in Disk Management
In the Disk Management console, the “Delete Volume” option may be dimmed out in the right-click menu for USB flash drives. So, users may be wondering how to remove one or more partitions in the external USB drives.
Cause
The “Delete Volume” option may be missing if the page file (pagefile.sys) exists in the partition, or the disk contains an Operating System.
If you look at the image above, you can see that a Page File exists in the D: drive — denoted by the line Healthy (Page File). Hence the Delete Volume option is grayed out.
This article explains how to delete the volume on a USB drive if the option is missing in Disk Management.Read more