Your files are probably encrypted.
Reference: Using File Encryption.
TechNet reference -- Encrypting File System in Windows XP
Because of the unique nature of encrypted files, different results can occur when moving or copying encrypted files between locations. For example, when copying an encrypted file from a local machine to a server on the network, different results of the copy operation will occur depending on the operating system being used on the server. In general, copying a file will inherit the EFS properties of the target, but a move operation will not inherit the EFS properties of the target folder.
The "access denied" error message is returned to applications from the NTFS file system in order to ensure compatibility with existing applications. The use of an alternate or more descriptive error message would cause many applications to fail or behave erratically.
The Windows XP Professional client contains some enhancements in the area of copying encrypted files. Both the shell interface and the command-line now support an option to allow or disallow file decryption. When an encrypted file is copied to a target location that does not allow remote encryption, the user will be prompted with a dialog box that allows a choice of whether or not to decrypt the file.
ArsTechnica discussion: Copying encrypted (Safeboot) hard drive to SSD.
Decrypt the drive, image/copy the partitions, encrypt the new drive.