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schard

Forum Moderator

From: Hannover

Registered: 2016-05-06

Posts: 1,983

Website

[solved] Wipe syslinux from MBR on GPT

I installed syslinux for legacy boot tests via

syslinux-install_update -iam

to the MBR of my GPT formatted disk.
Since I don't need it any longer, I want to remove it entirely from my system. After a

pacman -Rncs

I dd'ed the first 446 bytes of the disk.
My question is, since GPT stores a copy of the MBR also at the end of each disk, do I need to remove any possible remainder of syslinux there as well?

Last edited by schard (2019-04-02 07:27:07)

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macro_rules! yolo { { $($tokens:tt)* } => { unsafe { $($tokens)* } }; }

Ropid

Member

Registered: 2015-03-09

Posts: 1,069

Re: [solved] Wipe syslinux from MBR on GPT

According to the Wikipedia article about GPT, the copy at the end of the drive is without the sector where the MBR boot loader is.

schard

Forum Moderator

From: Hannover

Registered: 2016-05-06

Posts: 1,983

Website

Re: [solved] Wipe syslinux from MBR on GPT

@Ropid:
You're absolutely right.
I must have had this wrong in my mind.
Should have googled the GPT structure before asking here.
*facepalm*

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macro_rules! yolo { { $($tokens:tt)* } => { unsafe { $($tokens)* } }; }