Alternatively, create a blank file named portable.txt in the same directory as Dolphin.exe . This forces Dolphin to store all data locally in that folder instead of Documents.
Troubleshooting "Dolphin iosfs failed to write new fst" Error
Once you’ve resolved the issue, adopt these best practices to avoid it happening again:
Select "Virus & threat protection," then click "Manage settings" under the Virus & threat protection settings. dolphin iosfs failed to write new fst
If your Wii game ISO, WBFS, or RVZ file is corrupted, or if its file attributes are set to "Read-Only," Dolphin will fail when trying to parse or extract the FST structure from the game image. 4. Hard Drive Format Restrictions (FAT32 Limits)
This will delete all Wii save data, installed channels, and Miis.
If Dolphin is installed in a system-protected folder like C:\Program Files (x86) , this can cause permission headaches. Alternatively, create a blank file named portable
The main culprit is often , such as:
Ensure is turned off if it is blocking the app. 3. Change Installation Location
Programs like Microsoft OneDrive lock the Documents folder while syncing, which stops Dolphin from saving data. If your Wii game ISO, WBFS, or RVZ
Dolphin needs to its user directory ( Documents/Dolphin Emulator/ on Windows, ~/.dolphin-emu/ on Linux, or ~/Library/Application Support/Dolphin/ on macOS). If Dolphin cannot write to the Wii folder inside that directory, it cannot generate or update the FST.
Create a new folder somewhere accessible, like C:\DolphinData .