Unable to use WD disks: Error: [Errno 16] Device or resource busy: '/dev/sda'

TrueNAS General
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1

I am unable to create a pool, nor can I wipe any of my 4 disks.
The message I get:
image

Disk Type:
HDD

Description:
N/A

Model:
WDC_WD40EFPX-68C6CN0

Transfer Mode:
Auto

Rotation Rate (RPM):
5400

HDD Standby:
ALWAYS ON

Adv. Power Management:
DISABLED

Enable S.M.A.R.T.:
true

S.M.A.R.T. extra options:
N/A

lsof | grep /dev/sda

has no output.
The disk was used before in another configuration. Not sure how to format it in truenas.

Hardware used is Ugreen DXP 4800 Plus

2

Take it out, put it in a windows box and use diskpart / “choose disk” / clean on it

1 Like
3

Thanks this worked but I am bit surprised that truenas does not have this basic tools on board.

4

It does, you just have to use the command line.