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no bootable device after changing GPT to MBR PLEASE HELP!


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#1 Arurian

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Posted 14 April 2016 - 06:51 AM

so i wanted to put windows 7 instead windows 8 on my Acer e3 111:

 

i entered BIOS - changed UEFI to Legacy - cause UEFI didnt saw my USB flash with windows 7 on it!

 

started Installing windows 7 and when i got to the partition part, i formated all the partitions (which probably was a mistake):

 

ONLY THEN i noticed that all partitions are in GPT and windows wont install on them, so i decided to change them to MBR through prompt (CMD): diskpart → list disk → select disk 1 (1 signifies the number of GPT disk) → clean → convert MBR. 

 

and so it did, only after restarting - it gives me:  no bootable device - insert boot disk and press any key 

 

it sees the USB flash in bios boot mode or in F12 boot menu but does nothing! 

 

PLEASE HELP!



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#2 dc3

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Posted 14 April 2016 - 07:40 AM

In order to boot from a USB device you have to change the boot order in the BIOS so that the USB device is the first device in the boot order and the HDD/SSD the second device.


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#3 Arurian

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Posted 14 April 2016 - 07:56 AM

In order to boot from a USB device you have to change the boot order in the BIOS so that the USB device is the first device in the boot order and the HDD/SSD the second device.

tried that! - didnt work!



#4 JohnC_21

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Posted 14 April 2016 - 08:06 AM

Windows 7 64bit can boot a GPT disk on a UEFI computer. What did you use to create the USB flash drive. I have had good success with Rufus.

 

I would start by deleting all partitions using the bootable iso of Partition Wizard created using Rufus. Initialize the disk as GPT using Partition Wizard then try the Windows 7 install, if 64bit, on the computer after changing the mode form Legacy to UEFI.

 

http://www.sevenforums.com/tutorials/186875-uefi-unified-extensible-firmware-interface-install-windows-7-a.html


Edited by JohnC_21, 14 April 2016 - 08:13 AM.


#5 Arurian

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Posted 16 April 2016 - 05:15 AM

Windows 7 64bit can boot a GPT disk on a UEFI computer. What did you use to create the USB flash drive. I have had good success with Rufus.

 

I would start by deleting all partitions using the bootable iso of Partition Wizard created using Rufus. Initialize the disk as GPT using Partition Wizard then try the Windows 7 install, if 64bit, on the computer after changing the mode form Legacy to UEFI.

 

http://www.sevenforums.com/tutorials/186875-uefi-unified-extensible-firmware-interface-install-windows-7-a.html

thanks! i created USB flash drive using Rufus! it worked! THANK YOU!






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