Convert From MBR to GPT without loosing installations?

Hello !
I have windows 8.1 on a standard MBR partition.
Is possible to convert to GPT without loosing the installations I made ?
( Of course the Bios support UEFI ).
Thank you !

Hi,
We cannot ensure the third-party tool safety.
For built-in tool, either using Windows interface or command line, back up or move the data on the basic master boot record (MBR) disk you want to convert into a GUID partition table (GPT) disk. It cannot remain your data.
For more information, please read this article:
Change a Master Boot Record Disk into a GUID Partition Table Disk
https://technet.microsoft.com/en-us/library/cc725671.aspx
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Hi,
Besed on my research, Microsoft supports a fileserver cluster if the disks have been converted from MBR to GPT using a third-party tool.
For more detailed information, please refer to the links below:
Convert MBR to GPT
https://social.technet.microsoft.com/Forums/en-US/3007346f-cf7b-4089-9628-36d394da8240/convert-mbr-to-gpt
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http://technet.microsoft.com/en-us/library/cc725671.aspx
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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

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TheMonark wrote:
I input that into mac terminal while running os? And then you'd like me to post the results on this discussion board?
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I'm about to head out to celebrate a birthday, but I will post back here in about 14 hours.
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cgdisk 0.8.5
Disk Drive: /dev/sda
Size: 312315562, 148.9 GiB
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Convert From MBR to GPT without loosing installations?

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