System/Library/PrivateFrameworks/DiskImages2.framework
DIBlockDevice.h
@class NSString;
@interface DIBlockDevice : DIIOObject
@property (readonly) BOOL diskImageDevice;
@property (readonly, copy) NSString *mediumType;
+ (id)copyUnmatchedDiskImageWithRegEntryID:(unsigned long long)a0 error:(id *)a1;
- (id)copyIOMediaWithError:(id *)a0;
- (id)copyRootBlockDeviceWithError:(id *)a0;
@end