# CFURLWriteBookmarkDataToFile(_:_:_:_:) Creates an alias file on disk at a specified location with specified bookmark data. ``` func CFURLWriteBookmarkDataToFile(_ bookmarkRef: CFData!, _ fileURL: CFURL!, _ options: CFURLBookmarkFileCreationOptions, _ errorRef: UnsafeMutablePointer?>!) -> Bool ``` ## Parameters `bookmarkRef` The bookmark data containing information for the alias file. `fileURL` The desired location of the alias file. `options` Options taken into account when creating the alias file. `errorRef` The error that occurred in the case that the alias file cannot be created. ## Return Value `true` if the alias file is successfully created; otherwise, `false`. ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)