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