28.10.2020 23:17, steve finkel via Support requests for the GRand Unified Bootloader пишет: > At times I have removed GRUB from the MBR by overwriting the first 446 > bytes of the MBR using > > |dd if=/dev/zero of=/dev/sdX bs=446 count=1| > > |My understanding is removing just the first 446 bytes will leave the > partition table, 64 bytes, and the signature, 2 bytes, in tact. > | > > |However, I see in the GRUB manual that the boot.img file is 512 bytes. > | > > |Wouldn't this boot.img file overwrite the partition table?| > > | > | >
grub-setup copies current partition table from disk into this image before writing it back.
