[SOLVED] Recover deleted partition table - Guys, i need help!

My disk was dos labelled (MBR). So I 'fdisk'-ed my disk and entered 'o' to convert it to GPT and wrote it to the disk. Now all the partitions are gone. I want those back. I care about the data rather than the partitions

Edit 0:

Solution:

• install testdisk
• run testdisk
• choose "Create" log
• choose target disk. Eg: /dev/sda
• Choose appropriate partition type. Mine was MBR and I chose "Intel" and select "analyze"
• Now you'll see deleted partitions. Giveem appropriate flags like "*" for boot (efi partition) and "P" any other using space or arrow keys and press enter
• choose "write" and press y on the prompt to write those found partitions to the disk.

Thanks guys for the help