Error COMRESET failed (errno=-16) when installing Proxmox


New Member
Jan 22, 2020
Hi everyone !

I made a fresh Proxmox install yesterday. The system is installed on a SSD, no issue here. After that i created a mirrored Zpool (Raid1) with 2x 1To HDD (a Toshiba and a brand new WD). When creating the zpool, it failed and the error
ata6: COMRESET failed (errno=-16)
appears. The drive connected to the ata6 port is the new WD drive. Sometimes, after the zpool creation fails, the drive does not appear anymore on fdisk -l.

I try and change the Sata cable, the sata port, but nothing changes. If i connect the WD drive on a new sata port, with a new sata cable, the same error appears, with the new port number (ata5 instead of ata6).

Can it be the new drive that's faulty ? Or is it software side ?

Thanks everyone.
Last edited:


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!