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DrN8r
Paper Tape
Posts: 1
Location: RO
Views: 833
Message 1 of 3

Lenovo Legion Y720 can't upgrade bios

Hello, i own a Lenovo Legion Y720 15lKB laptop, and when i try to update bios with the system update utility the following error pops-up : mount the efi system partition failed. I've tryed to convert my SSD from mbr to gbt but it says that if i do that i won't be able to boot , because i have windows installed on SSD.

Please help, Thank you.

CyberSimian
Bit Torrent
Posts: 665
Location: GB
Views: 809
Message 2 of 3

Re: Lenovo Legion Y720 can't upgrade bios


@DrN8rwrote:

I've tried to convert my SSD from mbr to gbt but it says that if i do that i won't be able to boot, because i have windows installed on SSD.


As far as I know, no one has discovered a short way of doing this.  This means that you will need to use the long way:

 

(1) Copy all of your personal files from the SSD to an external USB disk.

(2) Change the partition table of the SSD from MBR to GPT. 

Note: this destroys ALL partitions on the disk.

(3) Re-install Windows in UEFI mode.

(4) Copy your personal files from the USB disk to the SSD.

(5) Update the BIOS.

 

The alternative is to choose NOT to update the BIOS.  Do you need to update the BIOS?

 

-- from CyberSimian in the UK

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aldumas
Token Ring
Posts: 31
Location: CA
Views: 790
Message 3 of 3

Re: Lenovo Legion Y720 can't upgrade bios

I ran into the same bios update issue. Lame. I converted without loosing data with this Microsoft tool: https://docs.microsoft.com/en-us/windows/deployment/mbr-to-gpt
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