When it comes to converting MBR disk to GPT, you can turn to Windows built-in disk management tool as well as third-party free partition tool.

Now, in order to use and manage the 3TB hard drive, you should change it to GPT disk.

GPT Disk to get more information about the two kinds of disks. However, do you know the difference between MBR and GPT? For instance, MBR disk can only support 2TB hard drive. Hard drives are, as you know, typically formatted in MBR (Master Boot Record) or GPT (GUID Partition Table). Reason 1: You Format 3TB Drive in MBR by Mistake Knowing the exact reason, you can solve the problem with ease. Now, 3 major reasons, as well as corresponding solutions, will be introduced. Here, please take a look at free western digital hard drive recovery to be well prepared for any data loss accidents. However, do you know how to solve this issue in Windows 10? In general, whether you are using Hitachi, Western Digital, Seagate, or Samsung drives, you might encounter this problem. And most people blame on their drive manufacturers since they think they bought the wrong hard drive. How to Fix: 3TB Drives Only Shows 746GBĪccording to a survey, we find many users don't know what causes this to happen. Need the data back from Seagate hard drive? Please follow the advice given in this Seagate data recovery article. Is it possible to solve this problem effectively and easily? Why we cannot see the full disk of the 3TB hard disk? Does anyone know how to have my computer realize that the Seagate drive is 3TB?' I am using the 3TB Seagate drive in my Rosewill RX-358-U3B enclosure, and I have read that a Hitachi 3TB had no compatibility issues in that particular enclosure.

I have asked this problem at Seagate forum and the one guy who replied didn't know how to solve it. 'I bought the Seagate barracuda 3TB and it shows as 746GB on my Windows Vista SP2 32-bit in GPT mode.

I'm sure that many people like me have encountered the following issue: when I install a new 3TB hard disk into the computer, I can only see 746GB (not 745GB or 747GB, but exactly 746GB) in my Windows Explorer as well as Disk Management.Īnd here, if we Google ' 3TB drive only shows 746GB', we will find many users have encountered the same issue. How to Fix: 3TB Drives Only Shows 746GB.Are you using a 3TB hard drive but it is only showing 746GB in Windows 10? Read this post to search the reasons for this issue and solutions to fix 3TB HDD not showing full capacity issue right now.

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