The active command is critical – without it, the MBR bootstrap code will not find the boot sector.
list disk
Insert your USB drive, restart your PC, and boot from it. You may need to press F12 , ESC , Del , or F2 (depending on your motherboard) to select the USB drive as the boot device. diskpart windows 10 install
: Type list disk to see all connected drives. Note the number of your target drive (e.g., Disk 0). The active command is critical – without it,
Close the "Choose an option" window, then click . When you reach the "Where do you want to install Windows?" screen, you’ll see your clean, unallocated space (or the fresh C: partition). Select the primary partition (C:) and click Next . The installer will automatically use the existing EFI and MSR partitions. : Type list disk to see all connected drives