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Cannot convert to primary/logical partition

Situations in which a partition cannot be converted to primary/logical.

By Ivy    Updated on December 1, 2025

Sometimes when you want to convert a partition to primary or logical, you may find out that the convert option is greyed out. Why is that?

The following are cases where this may occur.

Situation 1: The partition is labelled "system", so cannot convert to logical.

 

Situation 2: The partition is on a GPT disk, which only supports primary partitions. So cannot convert to logical.

Situation 3: MBR partition style only supports 4 primary partitions or 3 primary partitions + 1 extended partition (which contains many logical partitions). If there are already 3 primary partitions + some logical partitions on the disk, then cannot convert to primary.

If there is still any problem, please feel free to contact our AOMEI Support Team.

Ivy · Editor
Ivy, our dedicated editor at AOMEI Technology, is committed to providing valuable insights and guidance in data protection. Her mission is to empower everyone with her knowledge of computer backup and recovery, disk cloning, file synchronization, and more. Ivy's goal is to do her best to ensure your digital world remains safe and secure.