CDEmu vs VHD Attach

CDEmu emulates optical drives and discs on Linux, including CD-ROM and DVD-ROM media. Its kernel module provides a virtual SCSI host adapter that connects the Linux kernel with a userspace daemon, while libMirage gives access to many optical image formats, including MDS, CUE, BIN, ISO, NRG, UDF, DMG, CSO, GZ, DAA, and ISZ. Emulated media can be mounted in Linux, with automounting available. The project also describes experimental CD-R and DVD+R recording emulation, allowing blank virtual discs to be written with disc-burning software. Users can load and unload devices, check device status, and manage debug masks through command-line or GTK clients. The daemon exposes methods over D-BUS and can register on the session or system bus. System-bus use needs special permissions; session-bus use requires read and write access to the VHBA control device. CDEmu is free under the GNU GPL version 2 or later. The project lists official source tarballs and Linux distribution packages; third-party packages are not verified or formally supported.

VHD Attach is a free Windows utility for attaching and detaching virtual disks. It adds Attach and Detach choices to the right-click menu for VHD files, and options can add a Detach choice to the hard-drive context menu. The program can attach virtual disks automatically when the system starts in full-access or read-only mode, and it can display disk information without attaching the disk. It supports Windows 7, Windows Server 2008 R2 and later, including Windows 10; older systems such as Windows Vista are not supported. On Windows 8 and Windows Server 8, it can also be used with ISO images and VHDX disks. Command-line parameters include /attach, /detach and /detachdrive. The source repository is published under the MIT License. A VHD stored at a network location may require a change to the service account so it can access that location. Automatic attachment of a BitLocker-enabled drive does not show its password prompt because mounting starts before the user interface appears.