Windows Disk Partition Guide (Simple & Beginner Friendly)
Partition Size Examples (Based on Total Disk Size)
| Total Disk Size | Ideal C: | Ideal D: | Ideal E: | Notes |
|---|---|---|---|---|
| 256 GB | 120 GB | 70 GB | 60 GB | Light use |
| 512 GB | 150 GB | 150 GB | 200 GB | Balanced |
| 1 TB | 200 GB | 300 GB | 500 GB | Best for most |
| 2 TB | 250 GB | 500 GB | 1 TB | Power users |
Recommended C: drive size: 150–200 GB (250 GB+ for heavy users).
What Is Disk Partitioning?
Disk partitioning means dividing your hard disk into separate sections like C:, D:, and E:. It helps keep your operating system, software, and personal files organized.
How to Make a Disk Partition (Windows 10 & Windows 11)
Step 1 – Open Disk Management
Right-click the Start Menu and select Disk Management.
Step 2 – Shrink Your Main Drive (Usually C:)
Right-click the C: drive, click Shrink Volume, enter the amount of space you want to shrink, and click Shrink.
Step 3 – Create a New Partition
Find the Unallocated Space, right-click it, select New Simple Volume, choose the drive letter, format as NTFS, and complete the setup.
How Many Partitions Are Best?
For most users, three to four partitions are ideal:
- C: System Drive – OS and software
- D: Games or Large Apps
- E: Personal Files
- F: Backup or Extra
This setup keeps your system fast and organized.
Minimum Space for Windows C Drive
Recommended sizes for Windows 10 and Windows 11:
- OS files: 32–40 GB
- Essential software: 30–60 GB
- Updates and future apps: 40–80 GB