Many Mac users meet this problem when we open photoshop software, the pop up window telling me my Scratch disk (Photoshop Cache) are full, this make the software can’t works well, today we sharing the tips will teach you how to fix this problem with two methods, free up ccratch disk manually and setting up scratch disks. By the way, what is Scratch Disk. please check the following information.
when you watch tv, install apps or delete softwares, the computer will create a lots of temporary files, such as Adobe Photoshop. When you are using those programs, a working space called virtual memory or cache memory, where temporary files are stored in, is needed. If you only have only one hard drive on your Mac, then the scratch disk would be the drive where OS system is installed in.
If your scratch disk is overloaded, you would be prompted with the message like “scratch disk is full” when you open some files with programs such as Adobe Photoshop. With the error popping up, you would fail to open the files or use the graphic design programs in a normal way. And I think it is reason why you looking for a solution. Now let’s talk about how to fix scratch disk gets full error.
How Do I Clear Full Scratch Disks or Photoshop Cache on Mac
Actually, if you want to solve the full scratch disk problem, you would need to delete temp files and clear the disk space. Some people may assign a new scratch disk(change a hard drive you want and set it as your scratch disk) to fix the error, but you are not recommended to do so as the problem has not been actually solved. And the other problem is, when you assign a new scratch disk, it can also get full after some times using. And for some Mac users, there is only one hard drive in it. In this way, please check the following two methods to solve the problem correctly.
Free Up Scratch Disk Manually
- Clear Your Disk Space
Please go to your Mac drive and find out the contents which are useless or you don’t want to keep any more, delete them to free up the space. For the media files such as old videos, photos or audios you don’t want to use recently, you can transfer them to a external drive or the cloud storage.
- Delete Temp Files
The caches from the graphic design programs such as Adobe Photoshop can take up a lot of space on your scratch disk if you don’t remove them. Now let’s take Photoshop program as an example to see how to delete temp files create from it. To find out the temporary files, please search your computer and look for files with extension “.tmp” and them delete them off your Mac.
How to Fix Photoshop Scratch Disk Full Errors
Setting Up Scratch Disks
You can change the scratch disk location and establish addition scratch disks from Photoshop Preferences (On Windows: Edit > Preferences > Scratch Disks, On Macintosh: Photoshop CC Menu > Preferences > Scratch Disks). Many power users like to create a dedicated hard drive partition for the Photoshop scratch disk. Although Photoshop will function with a single scratch disk on the system partition, you can improve performance by setting the scratch disk to be the fastest drive in your system. Other useful guidelines for setting scratch disks are to avoid using the same drive where your operating system is installed, avoid using a drive where the files you edit are stored, and don’t use network or removable drives for a scratch disk.
Delete Photoshop Temp Files
If Photoshop is shut down improperly or crashes in the middle of an editing session, this improper shutdown may leave fairly large temporary files behind on your scratch disk. Photoshop’s temp files are typically named ~PST####.tmp on Windows and Temp#### on Macintosh, where #### is a series of numbers. These are safe to delete.
Clear Disk Space
If you’re getting an error message that the scratch disk is full, it usually means you need to clear some space on whatever drive is defined as the scratch disk in Photoshop Preferences, or add additional drives for Photoshop to use as scratch space.
Defragment Your Hard Disk
It is also possible to get the “scratch disk is full” error, even if the scratch disk drive has free space. This is because Photoshop requires contiguous, unfragmented free space on the scratch disk drive. If you are getting the “scratch disk is full” error message and your scratch disk drive does show a good amount of free space, you may need to run a disk defragmentation utility.
Scratch Disk Errors When Cropping
If you are getting a “scratch disk full” error when attempting to crop an image, it’s likely that you inadvertently have size and resolution values entered in the options bar for the crop tool, or you entered values in the wrong units. For instance, entering dimensions of 1200 x 1600 when your units are set to inches instead of pixels is going to create a huge file that could trigger the scratch disk full message. The solution is to press Clear in the options bar after selecting the crop tool but before dragging a crop selection.
Switch Scratch Disks
If you open Photoshop Preferences you can select the Scratch Disks category to open the Scratch Disk preference pane. Here you will see a list of all of the drives currently connected to your computer. Select one of the drives to switch from the current Scratch Disk. You can also press Command-Option (Mac) or Ctrl-Alt (PC) when launching Photoshop to change the Scratch Disk.