Photoshop scratch disk

Hi All,
I have photoshop CS2 on my desktop computer (XP). The hard drive is partitioned and I have photoshop scratch disk on its own partition (10GB).
I have photoshop CS3 on my laptop (Vista Premium, 2GB ram). There is only one hard drive in the laptop. It is already partitioned into three - C drive: windows + programs, S drive: system files, X drive: recovery.
My question is do I keep my scratch drive on the C drive or can/should I partition an external hard drive (250GB) and put my photoshop scratch disk on there? The external drive is via USB.
Thanks in advance.

Hi Dave & everyone,
Update on my external scratch drive.
When I bought the drive I ran all the way home with my new toy and quickly plugged it in to the notebook. Vista recognised it and I immediately transferred over 150GB of backup copies of my pics that I had burned to DVD's....I then read the instructions.
The drive was formatted as FAT32 and of course Vista is NTFS.
I promised myself that I would reformat it someday.
Today I burned my stuff to DVD's and formatted the drive as NTFS. I then partitioned it as a 200+GB (D)drive and a 34GB (F)scratch drive.
I ran DiskTT to see if there were any difference in the speed compared to what I wrote in message #17.
Here is the result.
Internal drive (C):
sequential write: 3036MB in 124.35sec = 24.4MB per second
sequential read: 3036MB in 95.57sec = 31.8MB per second
random access: 3036MB in 0.95sec = 3189.1MB per second
External drive (F):
sequential write: 3036MB in 173.49sec = 17.5MB per second
sequential read: 3036MB in 134.40sec = 22.6MB per second
random access: 3036MB in 0.97sec = 3136.4MB per second
bear in mind that the packet it wrote/read (3036MB) is less than the previous test (3563MB/3663MB)
Any thoughts?

Similar Messages

Photoshop Scratch Disk Error OSX 10.7.5

I had a Mac with CS5.5 installed. Suddenly i got an Error Message on Startup: "Could not open a scratch file because the disk is unavailable...."
Unable to solve the Problem I Updated to CS6.0 in hope of fixing the Problem that way. It did not.
So i deleted the User and created a new one which worked, for a while at least. Now i have the same Error again!
After searching around a bit i found this Thread: Re: Photoshop Scratch Disk Error OSX Lion 10.7.3
In this Thread FocusCreative22 found the answer to that Problem. He suggested checking "Ignore Ownership on this Volume" in the Volume Info.
My Problem now is that either through having a newer OS version or only having the Startupdrive i dont have the checkbox "Ignore Ownership on this Volume". How to fix this Problem then?

Chris,
Thank you for responding. I think you're onto something. I looked in disk utility to see if I could repair permissions on the scratch volume, as Lundberg suggested, however the option to do so was greyed out due to this message: "Not available because the selected disk is set to ignore ownership". So I went to the partition, pulled up the Get Info box and saw that the "Ignore Ownership on this Volume" box was not checked. I checked it to see what would happen, and although the option to repair permissions is still greyed out in disk utility, now Photoshop starts up perfectly, even with the problematic scratch partition set as the primary Photoshop Scratch Disk.
Is this the wrong way to get to the right answer?
Concerning your other suggestions, I was able to use Go To Folder to get to the /private folder, and I saw that it said I could only read. I was able to add my user account and give it Read/Write permission through the Get Info dialogue box (I fear Terminal unless I have explicit instructions). Is this what I want? I also looked into the /volumes folder and apparently there is nothing within it, unless the folders are hidden I suppose. I checked permissions of my main drive (startup disk, on which all my applications reside) and they claim that I have read/write privileges. However I'm only viewing this in the Get Info box; is that not the right place to see/alter it? Because this whole time the scratch partition also claimed that I have read/write permissions and that was obviously not true, as it only started working right once I checked "Ignore Ownership on this Volume". But it's incredibly confusing because I could save files to the scratch drive from Photoshop; I just couldn't choose it as a scratch drive.
The short question is: is it ok that I simply chose to ignore ownership on these disks, and that I messed with the /private folder, and/or do I need to do anything else?

Photoshop Scratch Disk Error OSX Lion 10.7.3

I have had Photoshop CS5 installed on my system for over a year, and it worked fine all this time under Snow Leopard. Now that I've upgraded to Lion, Photoshop will not open due to these messages:
Could not open a scratch file because the disk is unavailable.
Could not initialize Photoshop because the disk is unavailable.
The scratch disk in question is an 80gb partition of a 1tb internal hard drive. If I delete the preferences file (by holding down cmd-shift-opt when starting PS) then it starts up just fine. If I go into preferences and reset it to use the scratch disk, then next time I try to reopen the program I get the same 2 error messages and I have to ditch the preferences again.
There is nothing wrong with the disks, I verified them. And anyway, I've been using that scratch disk with Photoshop for the last year with no issues. It was only after I switched to Lion that this started happening.
I need to be able to take advantage of the performance increase that a scratch disk offers. Anybody have any ideas on what's happening or how to solve this?

Chris,
Thank you for responding. I think you're onto something. I looked in disk utility to see if I could repair permissions on the scratch volume, as Lundberg suggested, however the option to do so was greyed out due to this message: "Not available because the selected disk is set to ignore ownership". So I went to the partition, pulled up the Get Info box and saw that the "Ignore Ownership on this Volume" box was not checked. I checked it to see what would happen, and although the option to repair permissions is still greyed out in disk utility, now Photoshop starts up perfectly, even with the problematic scratch partition set as the primary Photoshop Scratch Disk.
Is this the wrong way to get to the right answer?
Concerning your other suggestions, I was able to use Go To Folder to get to the /private folder, and I saw that it said I could only read. I was able to add my user account and give it Read/Write permission through the Get Info dialogue box (I fear Terminal unless I have explicit instructions). Is this what I want? I also looked into the /volumes folder and apparently there is nothing within it, unless the folders are hidden I suppose. I checked permissions of my main drive (startup disk, on which all my applications reside) and they claim that I have read/write privileges. However I'm only viewing this in the Get Info box; is that not the right place to see/alter it? Because this whole time the scratch partition also claimed that I have read/write permissions and that was obviously not true, as it only started working right once I checked "Ignore Ownership on this Volume". But it's incredibly confusing because I could save files to the scratch drive from Photoshop; I just couldn't choose it as a scratch drive.
The short question is: is it ok that I simply chose to ignore ownership on these disks, and that I messed with the /private folder, and/or do I need to do anything else?

Question about Photoshop scratch disk and specific setup

Hi Folks
Thanks for the help in advance.
I'm a novice and need help finding a solution to a new PC Build. (Windows 7 Pro 64bit with Photoshop CS6)
I only recently found out about having a scratch disk dedicated for photoshop (very novice i know ), and was wondering if a 120-128GB SSD would be enough? (Please bear in mind I can't fit large SSD raid configs to my budget, plus I live in New Zealand, so prices are higher for SSD at the moment).
I only edit single camera RAW files at a time around 25mb per file, with no large amount of layers and very rarely do large images i.e. Panorama etc. I have searched the forums but could not find a concrete answer.
My setup was originally meant for a HTPC (I don't intend to overclock), but I will also be using it for light photography projects. Specs below:
CPU: Intel i7 3770
Mobo: Asrock B75 Pro3-M (or Asus P8H77m Pro, depending on budget)
16gb Ram (maybe bump up to 32gb later)
120-128gb SSD for OS and apps
120-128gb SSD scratch disk
2 TB HDD for storage
If anyone knows, the motherboards I've listed have 3x Sata3 ports, Asrock has one Intel chip and two Asmedia controlled Sata3 ports, while Asus has 2x Intel controlled and 1x Marvell controlled Sata3 port. If I went with the Asrock, would it be okay to connect the OS/Apps SSD to the intel controlled sata3 port and have the scratch disk and storage HDD to the Asmedia sata3 ports?
And one more novice question, when I begin to edit my images, is it best to transfer my photos from memory card to storage HDD then work from there? Or would it be quicker opening images direct from a USB 3.0 card reader / USB 3.0 external hard drive?
Thanks again everyone, really appreciate it

priddye wrote:
Just to clarify, if/when I get one 256gb SSD for my main C: drive, I can load the OS/Apps and store some data for the time being (until I get another SSD) and use the 2TB HDD for scratch disk only?
Yes, that's what I meant. You could try putting Photoshop scratch on C: at least temporarily, and watch your free space carefully. If you don't work on big documents or set your history states to be very large, it might be workable. But be careful. The safe "set it and forget it" configuration is to make your HDD the one and only Photoshop scratch drive.
When I do get around to getting the second 256gb, I will look at installing the two SSD's in RAID configuration. If i were to do this, can I load the OS/Apps to the RAID SSD's as well as using them for scratch disks and have the 2TB HDD for storage? I hope that makes sense.
Sounds about right; with 512GB on tap you should be able to run just about everything from C:, as long as you don't keep your entire photo library on there. Realistically, on a big system that's got a lot of apps installed and has been used for some time, Windows and your apps may end up consuming 100 to 150 GB, so that would still leave you a lot of breathing room.
Keep in mind that what you describe may require 3rd party re-partitioning software and/or backup and restoral, or a complete reinstallation of Windows and everything (usually the latter is what is recommended when moving up to a RAID system volume).
By the way, SSDs stay in best working order if you overprovision - i.e., maintain a fair amount of free space. The internal controllers need the free space to keep the data organized well and maintain top performance.
-Noel

Adobe Photoshop Scratch Disk Full/Startup Disk Full error - PLEASE HELP

Dear ALL,
I have started to notice recently that when I run Photoshop CS on my Mac OSX Tiger, I am getting the Startup Disk Full error message. Never happended before.
Since my initial post I downloaded Macaroni (utility) and have run the daily/weekly/monthly backups, checked the /private/var/vm and /private/var/log and /Volumes. Nothing unusual there...
When I started getting this error I had 32GB left on a looked at my HD and I seem to have 32GB available on a 152GB drive. Now after deleting I have 76GB capacity left.
But when I tried to open a Photoshop PSD or TIFF file and do a crop I still get tge Startup Disk is Full error followed by the Adobe Photoshop error Scratch Disk is Full.
I am thinking of running the Disk Utility from the Applications/Utilities/Disk Utility and doing a Verify Disk and Verify Disk Permissions followed by Repair Disk Permissions. I will be logged into the machine whilst doing this. Is there any danger in this as I have read elsewhere that I need to do this from a bootable volume. If that is the case how do I create a bootable disk/cd? If not then what is the cure to my Disk Full as surely there is now nearly 50% FREE!!!!!
Please help.
Max

PS will always use the boot disk for scratch to some extent even with an alternate primary scratch disk.
Be sure to turn off Spotlight as it causes problems.
4GB of RAM would be nice, I understand small files don't work well if there is more than 4GB RAM but large files will. OS X uses free RAM as cache and RAM disk before using disk drives.
How much RAM is allocated to PS? More RAM would help.
A dedicated lean boot drive helps. Install just what is needed for your work, use a separate drive for data, and yet another RAID volume for scratch.
When in doubt, backup with SuperDuper, and do an erase and then restore. Always backup before repairing; and never, ever, use an old version of Tiger CD/DVD - like 10.4.2 on 10.4.7/.8. Use "fsck" instead, or your emergency boot drive.
Also, give Applejack a shot and delete the cache folders and swap files from time to time to keep a system humming. CS/CS2 and Tiger benefit nicely from more RAM.

Lacie Firewire external HD as Photoshop scratch disk

Hi, I bought a 250Gb Lacie External HD to backup my iBook stuff, and was planning on using it as Photoshop CS2 scratch disk.
The problem is that on menu Photoshop>Preferences>Plugins&Scratch Disks there's no option to choose the Lacie HD, only Startup and Macintosh HD, that are the same HD by the way...
I can actually open, save and do whatever I want on the Lacie HD, the only problem is that Photoshop doesn't think it deserves to be a scratch disk.
Any advice?

Hi, Stephen. I suspect that what Apple System Profiler is seeing (and telling you about) is the FireWire bridge chipset in the enternal enclosure, which obviously must be capable of FW800 since it has a FW800 port. ASP isn't telling you how the drive is actually connected, but what sort of bridge chipset it's detecting. The chipsets are different for FW 400 and FW800, but I imagine the FW800 chipset is backward-compatible, and so there's no FW400 chipset for ASP to detect and report.
Since the chipset is there and recognized by ASP, I presume that the problem you're having may be related to the drive mechanism itself. Not being familiar with the drive in question, I don't know what the blue light you speak of is supposed to signify. Can you hear the drive spin up when you turn it on? Does Disk Utility see it? And if so, does its Repair Disk routine report any unfixable problems, or can't you run it at all?

Photoshop scratch disk question

Hi All,
I do a lot of work with photoshop elements, and currently have an external drive with a 2GB partion as my scratch disk - connected via firewire.
However I am beginning to find this set up a little annoying as it means I am stuck to one location unable to move when using photoshop.
I was thinking about partioning the internal hard drive on my PB instead and so having the scratch disk available wherever and also the transfer speed would be by the Gb instead of 400Mb. (am I right?)
Is it a good idea to partion a hard drive on a portable? is it worth all the hassle of reinstalling and also has anyone had any problems after partioning? like battery life decreasing?
Thanks in advance,
Naj

you seem have to put this question in the software session but fine. well, actually, you don't need to specifically partition you drive for photoshop and just let it choose your start-up disk or other connected drive you choose. but, for external drive, you have to connect while you start up you system. if not, your ps will always switch back to your start-up disk when you start your ps.

I am getting a Photoshop CC "scratch disk full" error, but my scratch disk is C:/ and I have 40 gigs of free space - help!?!

Why is Photoshop giving me this error when I'm not working on files that are that big given the amount of free space on my computer? They're around 1.5 megs each, .jpeg files (not even PSD files) and I'm only trying to resize them to smaller, nothing fancy at all. Can't even open and do one without getting the scratch disk full error - but it's not full when I look at my C:/ drive (even in PS when I check the scratch disks under Preferences you can see the multiple gigs free).
Help anyone?
Thanks!
C

The rule of thumb I follow to figure out scratch space says to figure on 50 to 100 times the size of your largest file ever multiplied by the number of files you have open. I have seen the scratch file exceed 800 GB once, an admittedly rare occurrence, but it often exceeds 200 GB when stitching large panoramas and the like.
As an example—and stressing that I'm aware that others have even more scratch space than I do—I keep two dedicated, physically separate hard drives as my primary and secondary Photoshop scratch disks and a lot of GB free on my boot drive for the OS. I also have 16 GB of RAM installed.
Additionally, if you only have a single HD, i.e. your boot drive, you'd need it to be large enough to accommodate both the swap files of the OS as well as Photoshop's scratch.

Why photoshop shows "scratch disk full" error, while in preferences I see that my extra harddrive with free disk space of 216GB is active?

"Could not update smart object files because the scratch disks are full". Please help, I though I connected my huge drive to photoshop?

The rule of thumb I follow to figure out scratch space says to figure on 50 to 100 times the size of your largest file ever multiplied by the number of files you have open. I have seen the scratch file exceed 800 GB once, an admittedly rare occurrence, but it often exceeds 200 GB when stitching large panoramas and the like.
As an example—and stressing that I'm aware that others have even more scratch space than I do—I keep two dedicated, physically separate hard drives as my primary and secondary Photoshop scratch disks and a lot of GB free on my boot drive for the OS. I also have 16 GB of RAM installed.
Additionally, if you only have a single HD, i.e. your boot drive, you'd need it to be large enough to accommodate both the swap files of the OS as well as Photoshop's scratch.

Scratch disk full and cannot open photoshop to fix it...

I cannot open photoshop because it says the scratch disk is full. I have been using photoshop (cs5) for 10 years and never had this problem. I recently installed cs5 on my Windows 7 computer and it worked for a few weeks, then this problem arose. I cannot afford a new version at this time but would like to use cs5 on this computer and I know it can work because it did for several weeks but now it won't and I can't follow the typical steps to remedy this situation because I cannot open photoshop. Please help!

Hi there,
The tips outlined below came from this site.
First, if you can open Photoshop, check to see what hard drive is set up as your Photoshop scratch disk. To do this, go to Photoshop > Preferences > Performance. Then look under Scratch Disks to see which one you are using and how much free space it has. (FYI—I've included these steps for future visitors to this thread.)
Option 1: Delete some files
If your scratch disk is very full (or the free space is low), try deleting some unwanted files from the drive (for me, "Macintosh HD" as seen in the image above) to make room for new ones.
Option 2: Delete temp files
Search your computer for temporary files. These files are typically named ~PST####.tmp on Windows and Temp#### on Macintosh, where #### is a series of numbers. These are safe to delete.
Option 3: Defragment your Hard Disk
Instructions for Windows
Instructions for Mac
I hope one of these methods works for you!

Where within CS6 Photoshop will I find the folder and file to clear the scratch disk on my harddrive ???

Where is the folder (and file) to erase the scratch disk ...

There is no such folder.
The scratch file gets erased as soon as you close the file that was using it.
The rule of thumb I follow to figure out scratch space says to figure on 50 to 100 times the size of your largest file ever multiplied by the number of files you have open. I have seen the scratch file exceed 800 GB once, an admittedly rare occurrence, but it often exceeds 200 GB when stitching large panoramas and the like.
As an example—and stressing that I'm aware that others have even more scratch space than I do—I keep two dedicated, physically separate hard drives as my primary and secondary Photoshop scratch disks and a lot of GB free on my boot drive for the OS. I also have 16 GB of RAM installed.
Additionally, if you only have a single HD, i.e. your boot drive, you'd need it to be large enough to accommodate both the swap files of the OS as well as Photoshop's scratch.

Scratch disk suddenly full after making tiny adjustments to photoshop file

Whilst working on a photoshop file the space on my hard drive suddenly drops from 12 Gb to a few hundred megabites, even after minor adjustments!! I then cant save my progress as the scratch disks are full!!! Ive tried looking all over the web and cannot fix this problem. Im an architecture student and I have a deadline fast approaching!

The rule of thumb I follow to figure out scratch space says to figure on 50 to 100 times the size of your largest file ever multiplied by the number of files you have open. I have seen the scratch file exceed 800 GB once, an admittedly rare occurrence, but it often exceeds 200 GB when stitching large panoramas and the like.
As an example—and stressing that I'm aware that others have even more scratch space than I do—I keep two dedicated, physically separate hard drives as my primary and secondary Photoshop scratch disks and a lot of GB free on my boot drive for the OS. I also have 16 GB of RAM installed.
Additionally, if you only have a single HD, i.e. your boot drive, you'd need it to be large enough to accommodate both the swap files of the OS as well as Photoshop's scratch.

Work stoppage because of scratch disk error. The torture continues! Please help!

Hi, everyone:
I would greatly appreciate help.
In December, I began receiving the error message Could not initialize Photoshop because the scratch disks are full. I deleted all the large files from my hard drive, and the problem went away.
Now, I am working on a large Photoshop file (i.e., 585,155kb). I am working at 300 ppi for print reproduction, using multiple layers. I am opening each new image to be added to the master document in a separate Photoshop window. I set the resolution of each at 300 ppi, then crop and transfer to its new layer in the master file (using drag and drop). After I crop and transfer, I close the open window of the file I just cropped and transferred. No other programs are running. This seems to be fairly standard stuff.
All was fine (although very slow) until two nights ago. When cropping, I received the error Could not complete your request because the scratch disks are full.
Once again, I researched scratch disk error messages, and I came to the conclusion I had no choice but to increase my RAM. So, I upgraded from 512MB to 2 GIG. (I successfully opened my PC and installed the RAM myself, confirming it on the Properties window. A major success, as the RAM was costly, and difficult to find, so I saved some money and time by installing it myself!)
With great enthusiasm and excitement, I opened the master Photoshop file again and the next image to be set to 300 ppi, cropped, and transferred over to a layer. But, when I tried to crop, I received the SAME sickening message, Could not complete your request because the scratch disks are full.
How can this be? I have four times the RAM I had before, which was costly, and I expected Photoshop to work swift and smooth with this new, more efficient increase in RAM. I am simply bewildered.
I tried changing my Scratch Disks to C: rather than Startup, but then I received the error message You currently have Adobe Photoshops primary Scratch and Windows primary paging file on the same volume, which can result in reduced performance. It is recommended that you set Adobe Photoshops primary Scratch volume to be on a different volume, preferably on a different physical drive.
More scratch disk torture.
None of this makes any sense, and, while Photoshop error messages are upsetting, they dont explain what you should do. I am not a programmer, and I am totally stumped.
I know that someone somewhere upgraded their RAM and still received a Scratch disk error too, so I hope someone can advise me on what I need to do next. I cannot continue my work and just spent a lot of money on RAM.
Thank you!

Hi, everyone: Thank you for your help with my problem. I appreciate everyones time and feedback, as well as the openness to help and explain (and further explain) what I do not fully understand. I learned a lot more, as Photoshop always introduces new things to learn and figure out. (One has to be part programmer to make PS work!) I appreciated the clear instructions and simple analogies too (for example, the head vs. suitcase was great).
Good news: The Scratch disk error has subsided for now!
I believe (although I am not certain) that the problem was something very simple after all, and I am embarassed. Only time will tell if this was really the culprit, for, if the Scratch disk error reappears later, it may be something else all together that is lurking in the background.
For now, it seems to have been a problem that Peter K.s advice helped me discover...
Peter's advice was to check the crop settings in the option bar for the common mistake of specifying pixels/cm rather than pixels/inch. My setting was correct (pixels/inch). However, I inadvertently used my pixel width number as inches in the Width setting, causing a MUCH bigger file than intended. When I changed the number, the Scratch disk error disappeared, putting me back in business! Thanks, Peter, for pointing me the direction that eventually revealed the problem.
Could it be this simple?
I kept working most of the night to test drive, free of the Scratch disk error for now! I hope the good fortune continues.
The lesson for others may be to check simple settings carefully first, before diving into the deep end of Photoshop.
Meanwhile, the new RAM is speeding up Photoshop considerably, so I feel like it was a good investment and will probably help safeguard against further Scratch disk errors, which I have had in the past. Also, Ive taken everyones advice to consider a dedicated, separate HD for Photoshop Scratch disk use. Ill plan that as a future/next investment. However, technical notes say an external HD isnt a good idea, but I dont have capacity for an internal HD, so it will have to be an external one. I would appreciate any words of wisdom here. Also, I still have to research SATA-II drives too (which are new to me) and ascertain if I can utilize one on my system. It may simply be too old for this technology, if it is new?
If interested, I also tried several things:
(1) Checking the space available on my HD again The pie chart indicated it was approximately half full (there was 46% free space, or 34.38 GB free space). I'll look for more to remove, but it seems reasonable to have 46 percent available, I think.
(2) Checking the need to DEFRAG The Analyzer said a DEFRAG was not needed, and, indeed, the color chart that plotted the files showed only a thin red line or two (red indicates fragmentation).
(3) Searching for more TEMP files to delete. I found 750 MB in TEMP files to delete, so, while not a lot, there were some still there. Previously I followed these directions to safely delete temporary Internet files: Ctrl Panel > Internet Options > General > Delete Files > Delete all offline content. But, when I navigated to C:\Windows\Temp, sure enough, I found more. Directly opening C:\Windows\Temp seems to be more effective. (I have done it that way in the past too, but lately I was trying to follow the "safe" way I had stumbled across recently.)
(4) Checking my Photoshop Memory Allocation, which was already set at 85% (which may be too high, so I may back it down later, but I did not change it for now). I remembered adjusting it some time ago, but I had forgotten by how much!
I also read the links that everyone recommended, as well as numerous other documents I found across the Web. Some introduced still more to learn/understand, of course.
Thank you once again. Ill resurrect or repost if the Scratch disk error haunts me again later, but, for now, a happy ending.

Laptop users: Any recommendations for a scratch disk for Illustrator CC?

Hello everyone.
I have been reading into scratch disks and their use with Illustrator, Photoshop, etc. It seems most of the discussions have been about desktop systems though. I am currently using just a 13" late 2013 Macbook Pro w/retina. 256GB SSD and 8GB of RAM.
I actually have a new 1 TB external USB 3.0 WD drive, but I believe it's a 5400rpm and might not be fast enough to be used as a scratch disk? If not, I was thinking of either getting a 7200rpm USB 3.0 external drive, or a USB 3.0 external SSD. Perhaps something like these?
Amazon.com: U32 Shadow™ 240GB External USB 3.0 Portable Solid State Hard Drive SSD: Computers & Accessories
Amazon.com: HGST Touro Mobile Pro 1TB USB 3.0 Portable External Hard Drive, Black (0S03559): Computers &
Illustrator CC is currently just set to use my startup disk as the scratch disk. I don't believe I have run into any problems yet, that might have involved Illustrator needing more than my 8GB ram, and needing to use the scratch disk, but I am not totally sure, and I just want to get one setup anyways, for future use. I am also looking into using this with some light Photoshop use in the future also.
Those of you who use a laptop for Illustrator and other Adobe programs, what do you use for your scratch disk?
Also, where does Illustrator store these scratch disk temp files on a Mac? I have not been able to find any useful information through Google searching so far. Mostly just stuff related to Photoshop scratch disks. I would like to check the location these files are supposed to be stored to see if there's anything taking up HD space that I could take back, and also as a guide to see how much scratch disk space I should look into getting.
Thanks!!!

Yes, you could do it. Remember to follow licensing restrictions. Here's an article on how to import after installing the operating system:
http://docs.info.apple.com/article.html?artnum=25773
Keep around locked in your office an external Firewire hard drive with partitions formatted for both Intel and PowerPC Macs containing all the applications and the operating systems and default user documents you want to keep. These can serve as the basis for the migration assistent import.

*Noob* Which of these would I use for a scratch disk? How much Ram?

Hello, I am fairly new to Photoshop as I have used Lightroom ever since I've been a photographer. I recently got into Photoshop with the cloud as well as layering multiple exposures together. I never KNEW anything about scratch disk, until yesterday.
First let me stress, please answer my questions in layman's terms. I search the net before I start a topic on a forum and I read a lot of answers that seem to be responding to people who have a general idea of what is already going on. Remember, I DO NOT. Here are my questions:
A:If the scratch disk acts like RAM, do I need to allow it to use any of my ram at all? If so, how much? I have two Macbook Pro's, they are the highest model Apple makes, both have SSD drives, Quad Core i7's, etc. I unchecked my Macbook hard drive and told it to use an external SSD drive that is plugged in via USB 3.0. Would it be better to use an HDD instead of SDD? I have lots of hard drives to choose from due to being a music producer.
B:When I exit the program does it delete all the data it created? This question is two fold, does it delete it regardless if I saved the project or not? If I save the project does it stay there? What if I delete the original photo, was the photo imported into photoshop upon camera raw?
C: Like question A, how much ram do I choose? I have 16GB of Ram in each of my MacBooks.

OK, I have now copied your hillbilly text and pasted it into a text editor to change the typeface so I can read it.
I'll try to address the lose ends here.
A:…I have two Macbook Pro's, they are the highest model Apple makes…
Please forgive me for not being impressed. I just happen to consider any laptop a sub-optimal choice for Photoshop photography work. My personal opinion. (Please don't ask me why.)
, both have SSD drives,… I unchecked my Macbook hard drive and told it to use an external SSD drive that is plugged in via USB 3.0. Would it be better to use an HDD instead of SDD?…
I assume you are talking about using the external drive as your primary scratch disk, not as your boot disk. That is the appropriate thing to do. HD or SSD will both do the job fine, as long as they're physically separate, dedicated Photoshop scratch disks.
Obviously the internal drive will be your boot disk. Adobe applications really like to reside on the boot disk, the drive where the OS resides.
B:When I exit the program does it delete all the data it created?
This question is two fold, does it delete it regardless if I saved the project or not?
If I save the project does it stay there? What if I delete the original photo, was the photo imported into photoshop upon camera raw?
NOTHING is ever imported into Photoshop, ever. You use Photoshop to open your files exactly where you put them in the Apple Finder. And you save them wherever you wish, in the Finder as well. Your images will always reside in the Finder.
You don't import files into Adobe Camera Raw either. You open them in or with ACR.
Of course you need to save your data, not only when you quit the application, but at frequent intervals while you're working on it. Nothing you saved will be deleted by Photoshop. How can you even conceive and ask such a question? ?? !
If you ever try to close a file or the application when you have open, unsaved files, the application will ask you for confirmation in an unmistakable way.
Your images will always reside in the Finder, wherever you put them.
Photoshop does not have the abominable "Libraries" scheme that made me detest Lightroom when I tried it. Nor does Photoshop hide your image files in "packages" like the even more abominable iPhoto does.
Please forget anything you may be accustomed to in Lightroom and/or iPhoto, and approach Photoshop with a fresh mind, respecting it like the granddaddy of image editors it is.
C: Like question A, how much ram do I choose? I have 16GB of Ram in each of my MacBooks.
Again, you don't "choose RAM", instead you select a percentage of dynamically changing Available Memory (not RAM; see above) to allow Photoshop to use. Leave at around 70%.
Please see the following post for an important tip.

Photoshop scratch disk

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