How to Convert Hardisk from GPT to MBR without Losing Files | Windows 7/8/8.1/10

Trick: How to Convert Hardisk from GPT to MBR without Losing Files

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About MBR and GPT Disk

MBR - Master Boot Record: it is a guide sector in the very front of drive. It was named in 1983 when partitioning the hard disk or flash disk of IBM compatible personal computer.
At that time, PC DOS 2.0 was able to support hard disk. MBR describes the information of logical, including file system and organization type. Besides,
MBR also contains the executable code produced when computer loads operating system in the second stage of start or the boot record connecting every partition (VBR).
Such MBR is usually called boot routine.
GPT - GUID (Globally Unique Identifiers) Partition Table: it is a new standard of disk partition table originating from EFI (Extensive Firmware Interface). Compared with MBR,
it provides a more flexible disk partition principle.
When Need to Convert MBR/GPT Disk?
As mentioned above, MBR disks only support up to 2TB partition size, so if you have a disk which is MBR formatted and larger than 2TB, you could only use 2TB disk size among it, but the reset of it could not be used. Converting MBR disk to GPT disk is necessary to make full use of the disk space.
On the other hand, since Windows 95/98/ME, Windows NT4, Windows 2000, Windows 2003 32-bit, or Windows XP 32-bit version does not support GPT partitions, a GPT disk will display as GPT protective partition in these systems, thus you could not access the data until you convert it back to MBR disk. In such situation, you have nothing to do but to convert GPT to MBR disk.

With its help, It is easy and reliable to Resize and Move Partition, Repartition Hard Disk, Align Partition, Quick Migrate OS to SSD, Copy Partition/Disk, Fix System/Partition, Convert primary to logical partition and vice versa, Convert disk from MBR to GPT without initialize disk and vice versa.

AOMEI Partition Assistant Pro Edition supports all the storage devices which can be recognized by Windows, such as IDE, SATA, SCSI, SSD, USB external disks, flash drive, Fire wire disk, Hardware RAID and Flash drive and so on.

[rubyzeng]

will not on my disk, cannot convert with system disk while i found AOMEI partition can do this

[danielfennock]

I converted with aomei partition assistant, it worked well for me.

[Vicky-zduv]

Aomei is really convenient when compared with this way.

[hunterjoy]

thank you for your clear explanation this is helpful to me.

[keyiwan]

thank you for your tutorial, I also achieve with aomei

[NoxideAlt]

I Have just tried this on my laptop now it won’t let me boot into windows and it has removed my bios.

[stevenlove]

Thanks for this exactly what I needed.

[onlinecomposer]

This one not was works. I look a old video and there was need to use diskpart. And after need to use Aomei. When I try with Aomei, the partition is was empty and loose all data.

[deadpoollane]

Unfortunately, it cleaned out half of my 4TB HD but left the other half the way it was :(

[Ysecond]

Shows there is not enough disk space when converting to gpt.. But i have 300gig free space of my 2 terabyte

[thenonexistinghero]

Didn't work for the 'without losing files' part. Broke my windows and was forced to format. Not only that, but I can't reinstall W10 since it's now MBR format and it will only install on GPT, so I have to figure out how to make it GPT in the BIOS before I can do that. Nope, they definitely couldn't be bothered to just make that a simple click option while installing W10.

[zzzyo]

Hello i did everything like in thr video and it worked, i installed the windows 7 but now my laptop doesnt want to boot from mbr help!!!

[mohammadshaban]

the keys are not working it said invalid for all of them

[teodortodorov]

My harddrive cannot switch from GPT to mbr without losing data :( can you help me

[AatifAneeq]

I have lost my all data 300+Gb during GPT to MBR conversion using Aomei Assistant Partition 6.0 Tool... Right now doing data recovery "Stellar Data Recovery"

[surendrababuindla]

is there any loss of data while doing this??

[PrettyLady]

2021, Key is Invalid :(. please let me know when you got a new key update. thanks!