# Harddisk unknown

**URL:** <https://forum.freenas-community.org/t/harddisk-unknown/126>\
**Category:** Help & Support\
**Created:** [April 1, 2021, 12:42pm UTC](https://forum.freenas-community.org/t/harddisk-unknown/126 "2021-04-01T12:42:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![TerryVog](https://forum.freenas-community.org/user_avatar/forum.freenas-community.org/terryvog/32/87_2.png) [@TerryVog](https://forum.freenas-community.org/u/TerryVog)\
**Post date:** [April 1, 2021, 12:42pm UTC](https://forum.freenas-community.org/t/harddisk-unknown/126/1 "2021-04-01T12:42:43Z")

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One of my harddisks is no longer recognized somehow.

I’ve been having problems with it from the start. In February I added 2 new HDs, bringing the total to 6. Since I only had 5 SATA power connectors on my power supply, I used a splitter, with no success. Recently I brought the server to a computer repair shop. They investigated the problem: the power supply was only 500W, which is not sufficient for 6 disks. They replaced it, so now it supports 750W and I no longer need a splitter.

Still, one of the new disks is not doing anything. FreeNAS doesn’t even recognize it as a harddisk. What should I do? Is it the factory’s fault? Or did it become corrupted due to the previous issues? Or can I just run some commands to restore it?

I probably don’t have to worry much about the data on it. It is mirrored on the other new drive anyway.

 ![Schermafbeelding 2021-04-01 om 14.22.51](https://discourse-freenas-community.s3.dualstack.us-east-1.amazonaws.com/uploads/original/1X/c89c13c9e2dc52860c963a43115ca3d6fa4e5dee.png)