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From: | GNU bug Tracking System |
Subject: | bug#57802: closed (MBR problem) |
Date: | Wed, 14 Sep 2022 16:38:02 +0000 |
Your message dated Wed, 14 Sep 2022 09:37:02 -0700 with message-id <YyIDLrtpto9j9cxo@ohop.brianlane.com> and subject line Re: bug#57802: MBR problem has caused the debbugs.gnu.org bug report #57802, regarding MBR problem to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs@gnu.org.) -- 57802: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=57802 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems
--- Begin Message ---Subject: MBR problem Date: Wed, 14 Sep 2022 13:31:41 +0200 Hello,
I discovered that Gparted writes to the MBR (0 to 446 sectors) when it is empty.
Yesterday i used a live cd of ubuntu to delete a partition of my disk with Gparted. And my pc didn't boot after that.
My os is a Fedora server installed in UEFI. Note that Grub is not installed in the MBR or in the partition. I don't know how but it boots fine like that.
So i had to delete the code Gparted writed in the MBR (0 to 446 sectors) to boot again ("sudo dd if=/dev/zero of=/dev/sda bs=446 count=1").
I think Gparted should not touch the MBR (0 to 446 sectors) when it is not ask by the user.
Thanks
Thomas
--- End Message ---
--- Begin Message ---Subject: Re: bug#57802: MBR problem Date: Wed, 14 Sep 2022 09:37:02 -0700 On Wed, Sep 14, 2022 at 01:31:41PM +0200, Thomas wrote: > Hello, > > I discovered that Gparted writes to the MBR (0 to 446 sectors) when it is > empty. > > Yesterday i used a live cd of ubuntu to delete a partition of my disk with > Gparted. And my pc didn't boot after that. > > My os is a Fedora server installed in UEFI. Note that Grub is not installed > in the MBR or in the partition. I don't know how but it boots fine like > that. > > > So i had to delete the code Gparted writed in the MBR (0 to 446 sectors) to > boot again ("sudo dd if=/dev/zero of=/dev/sda bs=446 count=1"). > > I think Gparted should not touch the MBR (0 to 446 sectors) when it is not > ask by the user. parted is not gparted (see https://gparted.org/), and parted only writes the bootloader code when using a msdos disklabel. While it is possible to use a msdos disklabel with UEFI, it should be using GPT. I'm also not sure why a UEFI system wouldn't boot with the MBR written. It should just ignore it and use the ESP partition. Brian -- Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart
--- End Message ---
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