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Head-to-head · Virtual Drive Software

ImDisk vs OSFMount

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score ImDisk #3 in Virtual Drive Software 9.1/10 Free plan Free plan✓ 2 of 4 features Visit ImDisk
OSFMount #8 in Virtual Drive Software 8.5/10 Free plan Free plan✓ 2 of 4 features Visit OSFMount

ImDisk leads on 0 checks, OSFMount on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreImDisk · 9.1/10
  • Free planboth

ImDisk scores higher on our rubric for virtual drive software: 9.1 against 8.5 out of 10; our editors rank them #3 and #8.

ImDisk is the better fit for open-source Windows virtual disks and RAM disks. OSFMount is the better fit for free forensic and raw-image mounting on Windows.

  • ImDisk fits best

    Open-source Windows virtual disks and RAM disks

  • OSFMount fits best

    Free forensic and raw-image mounting on Windows

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

Side by side

Feature ImDisk 9.1/10 Visit ↗ OSFMount 8.5/10 Visit ↗
At a glance
Editor score 9.1 8.5
Ranking #3 in Virtual Drive Software #8 in Virtual Drive Software
Best for Open-source Windows virtual disks and RAM disks Free forensic and raw-image mounting on Windows
Pricing model Free Free
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Desktop Desktop
Platforms Windows Windows
Support Email, Docs Email, Phone, Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features ImDisk 2/4 · OSFMount 2/4
Virtual disk files ✓ ✓
Optical image mounting ✓ ✓
Write images Not published Not published
Persistent mounts Not published Not published
Specs
Image formats raw disk images, VHD, VDI, VMDK, NRG, SDI, BIN IMG, DD, ISO, BIN, 00n, NRG, SDI, AFF, AFM, AFD, VMDK, E01, S01, VHD
Max virtual drives Not published Not published
Supported platforms Windows Windows 10 and Windows 11; older versions are available for some earlier Windows releases
Our review
Pros
  • Mounts raw, VHD, VDI, VMDK, NRG, SDI, and BIN images
  • Creates RAM disks and emulates hard-disk, floppy, and optical drives
  • Offers Explorer, Control Panel, command-line, and NTFS-subdirectory mounting
  • Supports raw, forensic, VMware, EWF, and VHD image formats
  • Read-only mounting protects originals, with write-cache mode for controlled changes
  • Creates RAM disks and provides physical-disk emulation plus CLI access
Cons
  • Windows only
  • Legacy design is aimed at older systems and specific volume-level uses
  • Some image formats may require external handlers such as DiscUtils
  • Windows-focused, with support documented for Windows 10 and Windows 11
  • RAM-disk contents are non-persistent at shutdown
  • Less oriented to general optical-drive use
Our verdict

ImDisk is an open-source virtual disk driver for Windows. It mounts disk-image files as virtual hard-disk partitions and can emulate floppy and CD/DVD-ROM drives. It also creates RAM disks backed by virtual memory and supports redirected…

Read the review →

OSFMount is a free Windows desktop utility for mounting local disk-image files as physical disks or logical drive letters. It is aimed at disk analysis, forensic workflows, and applications that need fast temporary storage. The tool…

Read the review →
  1. ImDiskVirtual Drive Software 9.1Free plan
  2. OSFMountVirtual Drive Software 8.5Free plan

Strengths and trade-offs

  • ImDisk — where it wins

    • Mounts raw, VHD, VDI, VMDK, NRG, SDI, and BIN images
    • Creates RAM disks and emulates hard-disk, floppy, and optical drives
    • Offers Explorer, Control Panel, command-line, and NTFS-subdirectory mounting

    Where it doesn't

    • Windows only
    • Legacy design is aimed at older systems and specific volume-level uses
    • Some image formats may require external handlers such as DiscUtils

  • OSFMount — where it wins

    • Supports raw, forensic, VMware, EWF, and VHD image formats
    • Read-only mounting protects originals, with write-cache mode for controlled changes
    • Creates RAM disks and provides physical-disk emulation plus CLI access

    Where it doesn't

    • Windows-focused, with support documented for Windows 10 and Windows 11
    • RAM-disk contents are non-persistent at shutdown
    • Less oriented to general optical-drive use

More comparisons

All virtual drive software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update