External hard drive not appearing?

[Joel Conison]

I was checking my scratch disc in PS preferences & noticed that my external hard drive which I use as my primary scratch disc is NOT showing up in the scratch disc preference section. I use one empty external hard drive as my #1 selection for scratch disc. #2, & #3 are other  external hard drives. I opened up the empty hard drive  to be sure it didn't crash & it did open. My question is : Why does it not appear in the scratch disc section while the other drives do appear?

Thanks

[Emilia24960783u7dz]

I've had the same issue and have tried all of the above - did you find a solution?

[SKmar2417863391d0]

Not sure if you're having the same problem but mine wasn't working because I was using a 2.0 external hard drive, i ended up buying a new one which is 3.0 and it worked perfectly.

[Glenn P Martin]

I had save a Photoshop file from within Photoshop onto the external drive first, then it appeared in the scratch disk list.

[UBABTechSupport]

I was having an issue where the only drive listed was my main HDD, as soon as I tried saving a file to the drive I use as a scratch disk it became listed.

[tylerjpoole]

Hi! Another thread helped me out. Which is to check and see if photoshop has permissions.  Posting this here for others to find. https://community.adobe.com/t5/photoshop-ecosystem-discussions/scratch-disk-not-recognized-with-phot...

[MarthaKaren25883236x8yb]

My new external hard drive is a T7 Samsung Portable SSD - it formatted to Mac automatically. I don't see a way to change the format to "OS Extended" or Journaled as stated in a correct answer. Can someone please advise?

[donm99]

Driving me crazy for days - For me, (Windows server 2019 on AWS), I had attached a new Volume to my EC2 to be used as a scratch disk, but I hadn't set the permissions correctly for users (i.e., Photoshop without Admin elevation).  Make sure you have read/write/modify set for your user - if you can save a .psd file to the scratch disk root from Photoshop, you're probably ok.

[MarthaKaren25883236x8yb]

Thank you. I called Apple Support and they walked me through a process to
reformat the new drive. I wish I could remember all the steps because it
will need to be done with each new drive.

[nicholasw52485545]

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