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Delete EFI partition for installing new OS?


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#1 MV730

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Posted 05 April 2015 - 01:24 AM

I must format HDD of my laptop with OEM OS Windows 8 for installing my own personal OS Windows 8 (I have my personal Product Key). Original disk has five partition in this order: EFI System (100 MB), Recovery Partition (900 MB), C/Primary Partition (95 GB), D/Primary Partition(122 GB),Recovery Partition (20 GB) (see attached).
I must delete all partition, including EFI, before I proceed with installing new OS?

Thanks for reply.

Attached Files


Edited by MV730, 05 April 2015 - 01:36 AM.


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#2 Aura

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Posted 05 April 2015 - 09:26 AM

Hi MV730 :)

If you are to reinstall Windows 8.1 from a clean installation, you can delete all the partitions present on the drive, then merge them into a single big one and install Windows on it. Windows will create its own EFI partition that it'll use to boot the OS so you don't have to worry about it. Just be aware that if you go down that road, you won't be able to do a Factory Reset on your Windows since you'll have deleted the built-in Recovery partition. But if you don't need it, its safe to do. You can delete all of these partitions and merge them in a single one during the installation, by calling up a command prompt and using diskpart.

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#3 MV730

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Posted 05 April 2015 - 05:14 PM

Hi Aura.
I understand all, thanks.


Edited by MV730, 05 April 2015 - 05:15 PM.


#4 Aura

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Posted 05 April 2015 - 05:17 PM

No problem MV, good luck with the reinstall and let me know if you have any questions during the process :)

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