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lnx

Member

Registered: 2009-11-04

Posts: 101

[Solved] setting bootable flag on EFI System Partition

In the UEFI/GPT example layout in the Partitioning wiki a bootable flag is set on the EFI Ssystem Partition. In gdisk's extra functionality I found a 'legacy BIOS bootable' option. Do I use this to set the bootable flag on the EFI System Partition?

Last edited by lnx (2016-11-19 15:09:07)

Head_on_a_Stick

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From: London

Registered: 2014-02-20

Posts: 7,732

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Re: [Solved] setting bootable flag on EFI System Partition

No, the "boot flag" is defined by the GUID partition code of 0xEE -- this shows as "boot, esp" in gparted (I think).

The flag you have found is for a BIOS boot partition and will render your system unbootable.

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lnx

Member

Registered: 2009-11-04

Posts: 101

Re: [Solved] setting bootable flag on EFI System Partition

I used the ef00 code to make it an EFI System partition. Does using this code in gdisk make it bootable as well?

Head_on_a_Stick

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From: London

Registered: 2014-02-20

Posts: 7,732

Website

Re: [Solved] setting bootable flag on EFI System Partition

Yes, is it the same as the 0xEE code that I quoted.

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Are you infected with Wetiko?

lnx

Member

Registered: 2009-11-04

Posts: 101

Re: [Solved] setting bootable flag on EFI System Partition

Thank you for the quick reply, Head_on_a_Stick.