Is this left over ZFS data that I need to remove ? If so, how can I remove it ? I can no longer access the old Zpool. Rest should be very similar to gdisk (n to create partition, t to set partition type etc.). It is also possible to load an sfdisk-script into cfdisk if there is. The script files are compatible between cfdisk, fdisk (8) sfdisk (8) and other libfdisk applications. u Dump the current in-memory partition table to an sfdisk-compatible script file. You can create a GPT partition table with g with fdisk. By default, new partitions are created as Linux partitions. In the Disks tab they're all listed at 465GB but when i create a filesystem on OMV they all appear as 457GB and they've already got roughly 100MB of used space on them despite being a fresh partition. Partitioning tools usually don't wipe the filesystem signatures, fdisk also doesn't do that when deleting the partition, you should use wipefs. Trying to clear a disk while doing the installation or to ensure other disks can be cleaned to use for Longhorn Describe the solution you'd like Include fdisk, parted, wipefs. I've tried using the shred -f command but it still doesn't change anything, I also can't access them in RAID management so I know it's an OMV issue rather than just the ZFS plugin. This division is recorded in the partition table, usually found in sector 0 of the disk. ddpart delpart dmesg eject fallocate fdformat fdisk findfs findmnt flock. When used without options -a or -o, it lists all visible filesystems and the offsets of their basic signatures. wipefs does not erase the filesystem itself nor any other data from the device. Block devices can be divided into one or more logical disks called partitions. wipefs can erase filesystem, raid or partition-table signatures (magic strings) from the specified device to make the signatures invisible for libblkid. It understands GPT, MBR, Sun, SGI and BSD partition tables.

I still can't create a Zpool with them they just don't show up in the ZFS menu. fdisk is a dialog-driven program for creation and manipulation of partition tables. So, the only thing it guarantees is that after wipefs, the blkid command (or anything else that uses. I went into Gparted and deleted all of the partitions and created a new partition table, and reformatted in ext4. wipefs can erase filesystem, raid or partition-table signatures (magic strings) from the specified device to make the signatures invisible for libblkid.

So, examining your output of sudo fdisk /dev/sda2: Device /dev/sda2 already contains a ext4 signature. On your partition, you created a filesystem with. Your disk is /dev/sda, your partition is /dev/sda2. I did a Quick wipe in OMV on all the disks but then I couldn't create a new pool in ZFS. As the comment by frostschutz said, you are trying to create a partition in a partition. Is a command line interface to the libmount library for work with mountinfo. On my old installation of OMV I had a ZFS pool running, ran into loads of issues so I backed up all the important Data externally and said I'd just wipe them. Installed libraries: libblkid.so, libfdisk.so, libmount.so, libsmartcols.so.

Fdisk using wipefs