KB450003 – Fixing FreeNAS Operation Not Permitted when Wiping or Adding a Disk

Last modified: February 25, 2019
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On step 3 be sure to replace ‘/dev/ada4′ with your drive reference. In the ‘view disks’ tab it will be the ‘name’ prepended with ‘/dev/’.

  1. Login via SSH
  2. sysctl kern.geom.debugflags=0x10
  3. dd if=/dev/zero of=/dev/ada4 bs=512 count=1 && dd if=/dev/zero of=/dev/ada5 bs=512 count=1
  4. Log into web interface and use “View Disks” to wipe the drives in that interface.
  5. Create new ZFS volume including these disks.
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