Steam "Disk Write Error" When downloading anything

[Tuna Terrorist]

I am trying to install and update some games and everything I try gets a Disk Write Error. I deleted local content for Rainbow Six Siege and that didn't do anything, and reinstalled Steam. Still nothing. Pls help 

[Electronics Wizardy]

permissions?

[Tuna Terrorist]

The data pool i created with a 1tb and 1.5tb drive disappeared.

[Sir Asvald]

5 minutes ago, Tuna Terrorist said:

I am trying to install and update some games and everything I try gets a Disk Write Error. I deleted local content for Rainbow Six Siege and that didn't do anything, and reinstalled Steam. Still nothing. Pls help 

Is it a new HDD? If so you'll need to create it

[Tuna Terrorist]

1 minute ago, Electronics Wizardy said:

permissions?

I've just realized its a problem with the drive pool because it disappeared from my pc

[Tuna Terrorist]

Just now, Abdul201588 said:

Is it a new HDD? If so you'll need to create it

No its a pool that has been running for a while. Just disappeared from my pc.

[Sir Asvald]

2 minutes ago, Tuna Terrorist said:

No its a pool that has been running for a while. Just disappeared from my pc.

Restart your PC? 

[Tuna Terrorist]

1 minute ago, Abdul201588 said:

Restart your PC? 

Lol tried that. This problem is definitely to do with a drive.

[Sir Asvald]

2 minutes ago, Tuna Terrorist said:

Lol tried that. This problem is definitely to do with a drive.

Go to disk management and see if it's there.

[Tuna Terrorist]

Ok, one of my drives is "Missing" according to Disk Management. I'm going to go into my bios and see if it shows up.

[Tuna Terrorist]

4 minutes ago, Abdul201588 said:

Go to disk management and see if it's there.

I restarted and the drive shows up in disk management and the pool is back together, but I dont know what triggered it to go offline because it was online minutes before. I'm going to backup my files just in case.