How can I divide one partition into two in Windows 10

When dividing a partition in Windows 11 or Windows 10 (i.e., shrinking an existing volume to create a new one), here are some important things to note.

1. Backup Important Data First

Even though partitioning tools are generally safe, there's always a small risk of data loss if something goes wrong. Always back up important files before modifying disk partitions.

2. You Must Have Administrative Rights

Partition changes require administrator privileges. Make sure you run Disk Management, Command Prompt, or third-party disk manager tools as an administrator.

3. System Partition Limitations

You are unable able to shrink or split the system (C:) partition very much due to unmovable system files. Third party disk partition software can sometimes bypass this better than Windows' built-in tools.

4. Don't Modify Partitions During Critical Operations

Avoid partitioning while running system updates, large file transfers, or backup operations. It could lead to system errors or corruption

Tip: When you finished partitioning one partition into two, Windows automatically assigns a drive letter to new partitions, but you can change it in Disk Management if it conflicts with another device or preference.