If there are files or partitions on the 4TB hard drive, you need to delete all the existing volumes at first. Convert MBR to GPT Using Disk ManagementĬonvert to GPT Disk option in Disk Management only works when your disk is empty, or you will see the Convert to GPT Disk greyed out. This disk management tool also allows you to convert GPT to MBR in vice versa.ĭownload EaseUS partition management tool to convert MBR to GPT with a few clicks. No matter whether your disk has files or not, you can use EaseUS Partition Master to convert MBR to GPT without any restrictions and data loss. Convert 4TB MBR Drive to GPT with EaseUS Partition Master To restore the full capacity, you can convert MBR to GPT in the following three ways. If your disk capacity is larger than 2TB, but in MBR, you will encounter a 4TB hard drive only showing 2TB issues. MBR supports the maximum hard drive capacity of 2TB, while GPT allows for a more flexible disk scheme of an even larger size. There are two prevailing styles of the partition table in Windows, MBR and GPT.
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The hard drive driver or firmware is out of date.