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Inspiring
December 31, 2024
Answered

Scratch disk

  • December 31, 2024
  • 1 reply
  • 3911 views

I have just upgraded PS to the latest version and now I only have one scratch disk. How do I assign another one? I had two in the previous version. Holding down command/option when I start up does not help.  Using Mac Sequoia 15.2

Correct answer Redhartotter

For a scratch disk, don’t choose Case Sensitive or Encrypted.

 

Adobe applications don’t work with case sensitive volumes:

https://helpx.adobe.com/creative-suite/kb/error-case-sensitive-drives-supported.html

 

Encryption isn’t needed on a scratch disk, and it might slow it down.

 

On a volume you use for normal everyday computing, encryption is recommended if you need to protect others from accessing personal data on that drive if it’s lost or stolen. I use encryption on internal and external volumes that store my files. But don’t use encryption for a scratch disk, which will contain only temporary, expendable files.


Thank you.  All good to go now.

1 reply

Chuck Uebele
Community Expert
Community Expert
December 31, 2024

You can set up scratch disk in your preferences: cmd-k, under the scratch disk tab.

Inspiring
December 31, 2024

Thanks Chuck but this is what I get.........

Only one scratch disk available - how doo a assign another?

Conrad_C
Community Expert
Community Expert
January 1, 2025

I haven't done this before.  I have attached  screen shots of the options I get:

One for APFS and one for macOS Extended.

Which one should I choose?      


According to the Adobe help article I linked to earlier, Photoshop will accept either APFS or macOS Extended for a scratch disk.

 

Between those, you can choose based on the type of volume. If the volume is an SSD (solid state drive), for performance reasons the newer APFS format is preferable. If it’s an HDD (hard disk drive), the older macOS Extended format might work better.