---
title: "init(URL:timeout:forcedReadOnly:synchronizationMode:)"
framework: virtualization
role: symbol
role_heading: Initializer
path: "virtualization/vznetworkblockdevicestoragedeviceattachment/init(url:timeout:forcedreadonly:synchronizationmode:)"
---

# init(URL:timeout:forcedReadOnly:synchronizationMode:)

## Declaration

```swift
init(URL: URL, timeout: TimeInterval, forcedReadOnly: Bool, synchronizationMode: VZDiskSynchronizationMode) throws
```