Convert Partition Table Style

PartitionGuru support traditional MBR partition table style and GUID partition table style. If necessary, you can do a lossless conversion between these two partition table styles.

Note: The conversion is lossless. That is, no partitions and files will be removed. But if your operating system do not support the GUID partition table style, the partitions and its files will become inaccessible!

1. Convert Partition Table to GUID Style. This function can be used for converting the MBR partition table style to GUID style (GPT disk). To realize this conversion, there must be some free sectors (several dozens) existed on the beginning and the ending of the disk. These sectors will be used for saving GUID partition table information. To do this conversion, select the disk to convert at first, then click the menu "Disk" -> "Convert to GUID Partition Table". The following warning message will display:

Convert Partition Table to GUID style

Make sure the operating system the disk will be installed on supporting the GUID partition table style. Other wise, all partitions on the disk will be inaccessible after converting. Press "Ok" button to start the conversion, "Cancel" button to cancel the conversion.

2. Convert Partition Table to MBR Style. This function can be used for converting the partition table back to the traditional MBR style. Because of the limitations of the MBR partition table such as the number of primary partitions could not exceed four, while converting, PartitionGuru will try to convert some partitions to logical partition. If failed on converting to logical and the total number of primary partitions is more than four yet, the conversion will be canceled.

To do this conversion, select the disk to convert at first, then click the menu "Disk" -> "Convert to MBR Partition Table". The following warning message will display:

Convert Partition Table to MBR Style

After this conversion, if the capacity of the disk is more than 2TB, the spaces more than 2TB will be unusable! In addition, if there is an operating system based on EFI architecture installed on this disk, the operating system can not be startup after this conversion.

To prevent data loss due to improper manipulation, this operation will not be saved to disk immediately, it only be kept in the memory until you carry out the command of "Save Partition Table".