I have set up a RAID5 device with three 2TB hard drives using
mdadm. The device was successfully created, but I cannot seem to create a partition on the device.
When I try to make an ext3 or ext4 partition via Disk Utility, I get the following error
Error creating partition: helper exited with exit code 1: In part_add_partition: device_file=/dev/md0, start=0, size=4000526106624, type= Entering MS-DOS parser (offset=0, size=4000526106624) MSDOS_MAGIC found found partition type 0xee => protective MBR for GPT Exiting MS-DOS parser Entering EFI GPT parser GPT magic found partition_entry_lba=2 num_entries=128 size_of_entry=128 Leaving EFI GPT parser EFI GPT partition table detected containing partition table scheme = 3 got it got disk new partition guid '' is not valid type '' for GPT appear to be malformed
I have seen this question, but that seems to suggest using
gparted to do the partitioning. I'm fine with doing that, but my RAID device doesn't show up in the list of
gparted devices. I suspect because this is a RAID and not a regular disk.
I have already created a GPT partition table on the device. How can I add a partition to my device?