convert partition table gpt to mbr ubuntu

Convert Partition Table GPT to MBR in Ubutnu
Step 1: Install gdisk
apt update
apt install gdisk
Step 2: Check disk OS boot from UFI for BIOS
gdisk -l /dev/sdX
Step 3: Convert GPT to MBR
gdisk /dev/sda
recovery and transformation options (experts only) = Press “r”
convert GPT into MBR and exit = Press “g”
print the MBR partition table = Press “p”
write the MBR partition table to disk and exit = Press “w”
Step 4: Reboot Or partprobe
reboot
or
partprobe
Step 5: Re-install Grub
apt-get purge grub-common
apt-get instal grub-pc
Reboot Your System

[@lomasaldiasalejandro1981]

Your video gave me the solution i was looking for, Thank you very much. And no it does not erases data from other partition in the same disk.

[@lyura]

thanks a lot it saved my old laptop!

[@darktech7705]

You are a life saver bro thanks dude.
My pc doesn't support uefi system because it's too old but i tried to convert my hard disk to mbr to gpt. But still my bios doesn't have uefi option. Then i tried from boot from an another pendrive and i was stucked on an endless loop. Until i saw your video. Thanks

[@genjieching2016]

im experiencing the same problem as you, yet i cant still solve it😭
did u solved yours?

[@_panthera_tigris]

Same

[@YiminSun]

Actually works. Ignore the dmesg command

[@Igor_Grey]

Thanks a lot! You saved my Sony Vaio!

[@LinuxTopic]

:)

[@muffinology1014]

Does this wipe the drive that you are converting?

[@ereinon]

no : it doesn't erase the existing data :D

[@MaximPerepelitsyn]

Thanks mister. You saved my day.
Are there any downsides to switch gpt to mbr for SSD and in general?

[@9591r]

Me funciono, Gracias :D

[@pc1536]

Wonderful song track

[@theekshanasoftware1582]

Thanks machan..👊

[@g194g]

I wish I could like this a million times. Also, gdiks lol

[@aadhi5479]

Do I need bios setting to legacy mod

[@lavidaesimple7156]

Bro me estoy muriendo, como que MBR protective aaaaaaaa no lo logreeee aaaaaa como se supone que use el legacy mode si no tengo tiempooo Edit: he intentado hacer lo del video pero en modo live y sin ninguna partición creada, a lo mejor sí se logrará instalando ubuntu normal 🤔

[@TheAloyz]

Thank you VERY MUCH mate, thanks to you my server is still alive :))
PS - Your "spell" apt dmesg | grep -o "EFI v[^\ ]*" || echo BIOS^C not working, returns a message "Invalid operation dmesg BIOS^C" (but it seems unnecessary throughout the entire process)
Cheers

[@saisushanth2459]

Bro my hard disk not detecting

[@mxdscientist]

Thanks !!

[@LinuxTopic]

Welcome

[@ereinon]

thanks

[@LinuxTopic]

You're welcome!

[@rahulrdx17]

how to undo this,

[@LinuxTopic]

its risky, i did not tried