I have a HDD that which has GPT that was created for a BIOS motherboard (not UEFI!) This drive used to house my Debian installation. Since I bought an SSD and a new UEFI motherboard, now I would like to use this HDD as only storage (no boot from it) I will delete my root, /home and swap partitions. But the remaining partitions on it that has data that I would like to keep. So I can't just create a new GPT and lose all my data. How can I remove GRUB without nuking the entire disk?PS: here is how the HDD looks currently:$ sudo gdisk /dev/sdcGPT fdisk (gdisk) version 0.8.8Partition table scan:  MBR: protective  BSD: not present  APM: not present  GPT: presentFound valid GPT with protective MBR; using GPT.Command (? for help): pDisk /dev/sdc: 1953525168 sectors, 931.5 GiBLogical sector size: 512 bytesDisk identifier (GUID): 2758BB06-C7E7-451B-9C92-F1B278721BB6Partition table holds up to 128 entriesFirst usable sector is 34, last usable sector is 1953525134Partitions will be aligned on 2048-sector boundariesTotal free space is 3437 sectors (1.7 MiB)Number  Start (sector)    End (sector)  Size       Code  Name   1            2048            6143   2.0 MiB     EF02     2            6144         8394751   4.0 GiB     8200     3         8394752        76754943   32.6 GiB    8300   4        76754944       174409727   46.6 GiB    0700     5       174409728      1346283519   558.8 GiB   0700     6      1346283520      1953523711   289.6 GiB   0700  and what partition is what:$ sudo lsblk -fNAME   FSTYPE LABEL           MOUNTPOINT         sdc                           sdc1                        sdc2 swap                   [SWAP]sdc3 ext4                   /sdc4 ext4                   /homesdc5 ext4   store1          sdc6 ntfs   store2           PPS: Would this command delete GRUB on my HDD?: :~# dd if=/dev/zero of=/dev/sda bs=446 count=1(found this from another topic)
Remove GRUB on a GPT disk
partition;grub2;gpt