Active Partition Recovery Full Apr 2026

fdisk /dev/sda # Use 'a' to toggle active flag on the correct partition

From Windows PE command prompt:

# Mount root partition mount /dev/sda1 /mnt # Reinstall GRUB grub-install --root-directory=/mnt /dev/sda update-grub Using fdisk (Linux): active partition recovery full

diskpart select disk 0 select partition 1 active exit After restoring structure, check for file system corruption: fdisk /dev/sda # Use 'a' to toggle active