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
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[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