Alcohol 52% vs VHD Attach

Alcohol 52% creates virtual CD/DVD-ROM drives so users can play discs without the physical media. It supports up to 31 virtual drives and can mount optical images in formats including CCD, CUE, ISO, BWF, CDI, MDS, and NRG. The listed downloads are for Windows, excluding Windows 98 and ME. A free 15-day evaluation period is available, with capabilities limited only by the number of virtual drives available. The Free Edition is also listed at free and is marked not for business use. A paid single licence costs 27.00 USD once and includes lifetime free upgrades; online activation is required. The maker describes home users backing up game CDs and movie DVDs, as well as librarians and school administrators archiving recordable media. DVD titles protected with CSS cannot be backed up due to legal restrictions. Support options include manuals, FAQs, a support forum, and direct email contact. The privacy policy says users may choose to join the Bright Data network for some premium features and can turn that setting off in the app.

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.