File locations¶

The data folder¶

Operating system	Path
Windows	`%APPDATA%\Xol`, which is normally `C:\Users\<you>\AppData\Roaming\Xol`
macOS	`~/Library/Application Support/Xol`
Linux (developer builds only)	`$XDG_DATA_HOME/xol`, or `~/.local/share/xol`

Settings ▸ Support ▸ About ▸ Data folder shows the exact path on your computer. The environment variable XOL_HOME, if set, replaces the location; it exists for tests and portable setups.

The program itself is separate: wherever you installed it on Windows, and Xol.app on macOS. Uninstalling the program does not touch the data folder.

Inside the data folder¶

Xol/
├── launcher.json          launcher settings
├── accounts.json          saved sign-ins, sealed by the OS secure store
├── service.json           the Xol access key, sealed by the OS secure store
├── instances/             one folder per instance
├── versions/              Minecraft and loader versions, and unpacked natives
├── libraries/             shared libraries
├── assets/                shared game assets and Mojang's log configuration
├── runtimes/              Java runtimes from Mojang
├── cache/                 cached lists and service data
│   ├── version_manifest_v2.json
│   ├── java-runtime-all.json
│   └── service/           accepted remote manifest and remote configuration
├── logs/                  game-<date and time>.log, one per run
└── updates/               verified installers (the last two) and state.json

Item	Safe to delete?
`instances/<name>`	Deletes that instance with its worlds. Back up `saves` first.
`versions`, `libraries`, `assets`, `runtimes`	Yes. They are downloaded and verified again on the next Play or Repair.
`cache`	Yes. It is rebuilt when Xol is next online.
`logs`	Yes
`updates`	Yes, but you lose the rollback installer and the record of the last accepted release sequence number
`launcher.json`	Yes. Settings return to defaults.
`accounts.json`	Signs every account out of Xol
`service.json`	Removes the saved access key

Do not edit accounts.json or service.json. Their contents are encrypted by the operating system and useless on another computer or user account.

Inside an instance¶

Path	What	Written by
`instance.json`	The profile this instance belongs to, the manifest revision, the applied preset, and the files Xol placed with their checksums	Xol. Do not edit.
`options.txt`	Minecraft's options. Presets merge a few keys into it.	Minecraft and Xol
`mods/`	The profile's mods, plus any you add	Xol and you
`saves/`	Worlds	Minecraft
`resourcepacks/`	Resource packs	You
`screenshots/`	Screenshots	Minecraft
`crash-reports/`	Crash reports	Minecraft
`libraries/OptiFine.jar`	OptiFine profiles only: the file you imported	Xol, from your file
`mods/OptiFine.jar`	Xol 1.8.9 only, if you imported OptiFine	Xol, from your file
`xol/config.json`	Client settings: module switches, settings, layouts	The Xol client
`xol/config.json.invalid-<number>`	A client settings file that could not be read, set aside	The Xol client
`xol/xol-settings.json`	The export written by General ▸ Export	The Xol client
`xol/remote.json`	Remote configuration written before a Xol profile starts. Not read by the client yet.	The launcher

The launcher's Open folder buttons (Settings ▸ Instance) open the instance folder, resourcepacks, screenshots and the data folder's logs.

Where your things are, by operating system¶

	Windows	macOS
Worlds	`%APPDATA%\Xol\instances\<instance>\saves`	`~/Library/Application Support/Xol/instances/<instance>/saves`
Resource packs	`…\instances\<instance>\resourcepacks`	`…/instances/<instance>/resourcepacks`
Screenshots	`…\instances\<instance>\screenshots`	`…/instances/<instance>/screenshots`
Game logs kept by Xol	`%APPDATA%\Xol\logs`	`~/Library/Application Support/Xol/logs`
Verified installers	`%APPDATA%\Xol\updates`	`~/Library/Application Support/Xol/updates`

On macOS the Library folder is hidden in Finder. Use Go ▸ Go to Folder… and paste the path, or the launcher's Open folder buttons.

Next to the app on macOS¶

During an update, a hidden folder named .Xol-update-<hex>.app appears next to Xol.app, and after the swap the previous app is kept as .Xol-old-<hex>.app until the next start. Xol removes both itself. See Updates.