---
title: volumeIsInternalKey
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/urlresourcekey/volumeisinternalkey
---

# volumeIsInternalKey

A key for determining whether the volume is connected to an internal bus.

## Declaration

```swift
static let volumeIsInternalKey: URLResourceKey
```

## Discussion

Discussion The corresponding value is a Boolean NSNumber object, or nil if the system can’t determine its status.

## See Also

### Volume status keys

- [volumeIsAutomountedKey](foundation/urlresourcekey/volumeisautomountedkey.md)
- [volumeIsBrowsableKey](foundation/urlresourcekey/volumeisbrowsablekey.md)
- [volumeIsEjectableKey](foundation/urlresourcekey/volumeisejectablekey.md)
- [volumeIsEncryptedKey](foundation/urlresourcekey/volumeisencryptedkey.md)
- [volumeIsJournalingKey](foundation/urlresourcekey/volumeisjournalingkey.md)
- [volumeIsLocalKey](foundation/urlresourcekey/volumeislocalkey.md)
- [volumeIsReadOnlyKey](foundation/urlresourcekey/volumeisreadonlykey.md)
- [volumeIsRemovableKey](foundation/urlresourcekey/volumeisremovablekey.md)
- [volumeIsRootFileSystemKey](foundation/urlresourcekey/volumeisrootfilesystemkey.md)
- [volumeSupportsFileProtectionKey](foundation/urlresourcekey/volumesupportsfileprotectionkey.md)
- [volumeTypeNameKey](foundation/urlresourcekey/volumetypenamekey.md)
- [volumeSubtypeKey](foundation/urlresourcekey/volumesubtypekey.md)
- [volumeMountFromLocationKey](foundation/urlresourcekey/volumemountfromlocationkey.md)