Scratch Disk Problem after macOS High Sierra Update

Community Beginner ,
Sep 30, 2017

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After updating my MacBook Pro to macOS High Sierra launched my Photoshop and was working on it and I was notified that my SSD is full (I have 2 drives in my MacBook one is 64GB SSD which contains apps & macOS and the other one is 1TB SSHD aka fusion drive which holds all my data and home user folder). Now for some reason, Adobe Photoshop only uses startup drive as a scratch disk and it becomes full very fast because of only 10gb free in it. I went into preference to check my settings but there was no listing of drives + I was unable to change anything there. it only suggests me to relaunch the photoshop with holding option+command keys which I did but it only provides the choice of startup only screenshots are attached below. I have already reset my Photoshop preferences via holding Shift+Option+Command method but still the same. Adobe Illustrator is however not affected by macOS update only Photoshop... Strange! see screenshots attached below...

Please help me solve this. I will also chat with Adobe support about this issue but they are closed for today.

Screen Shot 2017-09-30 at 1.17.56 PM.png

Screen Shot 2017-09-30 at 1.19.04 PM.png

Screen Shot 2017-09-30 at 1.19.16 PM.png

Screen Shot 2017-09-30 at 1.17.13 PM.png

Photoshop CC 2017 does not recognize APFS volumes as valid scratch disk destinations.

The exception is the boot volume, which you can set to be the scratch disk by holding down the command and option keys while you are launching Photoshop. In the "Scratch Disk Preference" dialog you can choose "Startup" and that will set the boot volume to be the scratch disk even when it is an APFS volume.

If you need further scratch disks, then you will need to point Photoshop to one or more HFS(+) volumes.

This is something that we are working on improving.

Jesper

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Scratch Disk Problem after macOS High Sierra Update

Community Beginner ,
Sep 30, 2017

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After updating my MacBook Pro to macOS High Sierra launched my Photoshop and was working on it and I was notified that my SSD is full (I have 2 drives in my MacBook one is 64GB SSD which contains apps & macOS and the other one is 1TB SSHD aka fusion drive which holds all my data and home user folder). Now for some reason, Adobe Photoshop only uses startup drive as a scratch disk and it becomes full very fast because of only 10gb free in it. I went into preference to check my settings but there was no listing of drives + I was unable to change anything there. it only suggests me to relaunch the photoshop with holding option+command keys which I did but it only provides the choice of startup only screenshots are attached below. I have already reset my Photoshop preferences via holding Shift+Option+Command method but still the same. Adobe Illustrator is however not affected by macOS update only Photoshop... Strange! see screenshots attached below...

Please help me solve this. I will also chat with Adobe support about this issue but they are closed for today.

Screen Shot 2017-09-30 at 1.17.56 PM.png

Screen Shot 2017-09-30 at 1.19.04 PM.png

Screen Shot 2017-09-30 at 1.19.16 PM.png

Screen Shot 2017-09-30 at 1.17.13 PM.png

Photoshop CC 2017 does not recognize APFS volumes as valid scratch disk destinations.

The exception is the boot volume, which you can set to be the scratch disk by holding down the command and option keys while you are launching Photoshop. In the "Scratch Disk Preference" dialog you can choose "Startup" and that will set the boot volume to be the scratch disk even when it is an APFS volume.

If you need further scratch disks, then you will need to point Photoshop to one or more HFS(+) volumes.

This is something that we are working on improving.

Jesper

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Sep 30, 2017 0
Adobe Community Professional ,
Sep 30, 2017

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Is your scratch drive HFS+ Journaled? It seems Photoshop CC 2017 under High Sierra will not recognize any other format, even AFPS.

While my AFPS SSD will be labeled  as the Startup in the First scratch, I can't assign it as a Second,Third, or Fourth scratch

I'm using a flash drive as a scratch disk. OSX 10.13 on a mid-2012 MBP.

Gene

Screen Shot 2017-09-30 at 4.49.36 PM.png

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Sep 30, 2017 1
Adobe Community Professional ,
Sep 30, 2017

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Sep 30, 2017 1
Adobe Community Professional ,
Sep 30, 2017

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The other thing I should point out, that Adobe apps are developed by different teams in different locations and what may affect Photoshop, might not affect Illustrator.

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Sep 30, 2017 0
Community Beginner ,
Sep 30, 2017

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I went through Conrad Chavez blog, It seems that first mistake was I updated to High Sierra without knowledge of compatibility issues but as I'm a subscribed member I was thinking that Adobe already went through these issues while doing beta testing of there products. The second mistake will be conversion to APFS file format because according to blog Photoshop is having trouble with APFS. only workaround until Adobe fix will be using an external drive with HFS file format prior to APFS...

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Sep 30, 2017 0
Adobe Community Professional ,
Sep 30, 2017

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Well at least you know how to work around it and you should be able to get back to work.

Noel Carboni was a valued Windows OS contributor to these forums. I have kept his upgrade advice in my notes:

Upgrading  advice

Conscientious folks who need critical things to keep working don't just change out a working OS and complain to application makers that their having done so breaks their applications.  They test, they research.  THEN they migrate when it's safe to do so.

-Noel

So my main MBP is 10.12.6 and the secondary is running 10.13 for help in providing High Sierra advice.

Gene

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Sep 30, 2017 0
Community Beginner ,
Sep 30, 2017

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Both drives are now converted to APFS...

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Sep 30, 2017 0
Adobe Employee ,
Oct 02, 2017

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Photoshop CC 2017 does not recognize APFS volumes as valid scratch disk destinations.

The exception is the boot volume, which you can set to be the scratch disk by holding down the command and option keys while you are launching Photoshop. In the "Scratch Disk Preference" dialog you can choose "Startup" and that will set the boot volume to be the scratch disk even when it is an APFS volume.

If you need further scratch disks, then you will need to point Photoshop to one or more HFS(+) volumes.

This is something that we are working on improving.

Jesper

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Oct 02, 2017 4
Community Beginner ,
Oct 02, 2017

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Thanks Jesper, glad to hear that Adobe is working on the issue.

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Oct 02, 2017 0
Adobe Community Professional ,
Oct 15, 2018

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Jesper,

Is this still the case with the just released photoshop cc 2019 on macOS?

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Oct 15, 2018 0
Adobe Employee ,
Oct 15, 2018

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No - this is not a problem with Photoshop CC 2019.

Jesper

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Oct 15, 2018 0
New Here ,
Nov 28, 2020

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Jesper, any updates on APFS scratch drive compatibility?

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Nov 28, 2020 0
Most Valuable Participant ,
Nov 28, 2020

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Yes, there were updates 2 years and : versions ago. 

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Nov 28, 2020 0
New Here ,
Oct 20, 2017

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This process allowed me to select the start up (an sdd) as the scratch disk but when I relaunch PS the disk does not show up in the scratch disk box so not sure if its using it or not at this point.

Screen Shot 2017-10-20 at 6.14.44 PM.png

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Oct 20, 2017 0
Community Beginner ,
Oct 21, 2017

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Hi Tymataus, which version of photoshop and OS you are using? if you are member of Adobe CC then simply update to Photoshop 2018 (Release 19.0) which will solve all the problem related to APFS formated drives in new macOS High Sierra.

Zeeshan

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Oct 21, 2017 0
New Here ,
Oct 21, 2017

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I'm still running CS 5.1 on High Sierra, I'm guessing thats not going be supported?

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Oct 21, 2017 0
Community Beginner ,
Oct 21, 2017

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Tymotaus, CS 5.1 is not supported because according to Jesper Photoshop CC 2017 doesn't recognise APFS so CS 5.1 will be certainly not supported...

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Oct 21, 2017 1
Adobe Community Professional ,
Oct 21, 2017

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You still can use HFS+ formatted drives as scratch.

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Oct 21, 2017 0
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New Here ,
Jan 09, 2021

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I still can't use my external SSD as a scratch drive for Photoshop 22.1.0 reguardless of the format.. APFS or OS Extended. It's a pain in the backside.

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Jan 09, 2021 0