Type convert gpt and press . This sets up the drive for modern UEFI firmware compatibility. Option B: Prepare Drive for Legacy BIOS Boot (MBR)
Modern computers using UEFI firmware require the GUID Partition Table (GPT) format to boot Windows 10 properly. Older systems using Legacy BIOS require Master Boot Record (MBR). For UEFI systems, type convert gpt and press . For Legacy BIOS systems, type convert mbr and press Enter . 5. Create the Primary Partition
Identify your target drive based on the column (e.g., a 500 GB SSD will show roughly 465 GB of space). diskpart windows 10 install
When installing Windows 10, most people are content to click "Next" through the graphical installer. But sometimes, the standard installer isn't enough. Maybe you have a corrupted drive, a stubborn partition that won't delete, or you simply want to ensure your new OS is installed on a completely clean slate without leftover data clutter.
Before modifying your drives, you must understand the basic commands used to navigate and alter your storage configuration. Type convert gpt and press
create partition efi size=100 format quick fs=fat32 label="System" assign letter="S"
This command erases all partition data, hidden sectors, and partition tables from the selected drive. clean Use code with caution. Older systems using Legacy BIOS require Master Boot
If you want to manually create partitions instead of letting the Windows installer do it automatically: Create Primary Partition create partition primary size=30000 (size in MB). Format Drive format fs=ntfs quick (applies the NTFS file system quickly). Assign Letter assign letter=C (makes the drive accessible). Set Active (marks a partition as bootable; only for MBR/BIOS systems).