Physical Disks are Missing in Disk Management

Fixing a situation where most of my Storage Spaces JBOD disks were missing in Disk Management and Get-PhysicalDisk showed their Operational Status as being stuck on “Starting”/"Error".

Most of the disks disappeared in Disk Management and thus couldn’t be added to a new Storage Spaces pool, however in Device Manager they should be listed. I removed the devices and rebooted but the disks didn’t appear in Disk Management. I then ran Get-PhysicalDisk and this came up:

The solution may be to run Reset-PhysicalDisk:

$phydisk = (Get-Physicaldisk | Where-Object -FilterScript {$_.HealthStatus -Eq “Unknown”})

foreach ($item in $phydisk)

{

Reset-PhysicalDisk -FriendlyName $item.FriendlyName

}

A few seconds later, things looked a lot better: