In my case, I did not choose to blank out the MBR. You may need to delete an EFI GPT (0圎E) partition GPT data structures destroyed! You may now partition the disk using fdisk or Z zap (destroy) GPT data structures and exitĪbout to wipe out GPT on /dev/sdb. U Replicate partition table on new device H recompute CHS values in protective/hybrid MBR R recovery and transformation options (experts only)Į relocate backup data structures to the end of the disk O create a new empty GUID partition table (GPT) I show detailed information on a partition You should repair the disk!įound invalid MBR and corrupt GPT. Warning! Main partition table CRC mismatch! Loaded backup partition table Here is the command sequence that I used, my input is marked in red.Ĭaution: invalid main GPT header, but valid backup regenerating main headerĬaution! After loading partitions, the CRC doesn't check out! You run it on the command line by specifying the HDD device as a parameter, in my case the disk is the second hard drive /dev/sdb. The command-line program from GParted, which I will use here, is named gdisk. It can be installed on Ubuntu and Debian with the command: sudo apt-get install gpartedĪnd on CentOS with: yum install gparted Remove GPT partition table with GParted The tool to remove GPT on Linux is GParted. Or like in my case, when you want to add an HDD into a RAID where the other disks use the traditional MBR partition table.

when you install another OS like Windows which can't cope with GPT.

Sometimes you might have to remove an existing GPT partition table from a hard disk.

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