Taub, Eric A. (February 2, 2004). "TECHNOLOGY; Memory Evolution: Survival of the Smallest". The New York Times. You can manually recreate this structure by copying it from another working card that formats successfully in your PSP. I have personally confirmed mixing and matching of MicroSD cards of different sizes and speeds (although they were all the same brand - SanDisk). For instance I installed a 64 GB with a 16 GB to get ~72 GB (after format) of usable storage.

While you can technically create any size card from 1GB to 2TB, most people will be looking to create something 64 GB or higher. Once the cards were formatted however I was able to remove the MicroSDs and place them in any card and they all appeared to function normally. The exceptions here are #1 (the genuine PhotoFast which wouldn't support cards higher than 32 GB) and #6, which seemed to have no issues with 2 x 64GB but would not read my 200 GB cards properly.a b "News-Latest publications from CST". www.simmtester.com. Archived from the original on July 17, 2001 . Retrieved January 25, 2022. The next identifying feature is card slot shape. This is highlighted with the red rectangle in card #1 (the *genuine* PhotoFast card). Cards either have the rounded slot shape of #1 or the jagged shape of all the others. As I haven't tested any other cards with jagged slots I can't definitively say which type of cards might be better on any given trait. At this point the PSP drive letter should show as a good drive on the Windows system and you should be able to browse and copy files to/from it.

If however you can't get the PSP to recognize the card with all space you will likely need to get a hold of another adapter, MicroSD card, or possibly CFW. After you manually create this folder structure on your PSP drive which has been successfully re-formated via the PC tools you should be good to go in using this card in your PSP. If anyone tells you that CSO (Compressed ISO) loading speed is negligible compared to ISO, they're lying. This process simply entails re-formatting your card through the PC. After putting your PSP in "USB Connection" mode and seeing the drive letter appear in windows we need to reformat.

MS-A16G - Accessories Compatibility Information". support.d-imaging.sony.co.jp . Retrieved April 22, 2023. If you want to go with up to 128 GB I think most any card will work. To go higher than that you might have a bit more of a challenge finding a card like #6, or some other card that has proved trustworthy for others. After many tests I decided that it was unlikely I was going to ever get a clean format on anything over 128 GB. After reading rsn8887's thread above and seeing that he encountered the same issues I did I gave in to the fact that I probably have to rely on Windows to properly format the cards. This depends on what firmware is running on the PSP. I believe that the latest OFW version can support up to 128 GB (though it might be as much as 256 GB). Most of the modern CFW should support up to 2 TB. You should verify what your FW can support before buying anything.