Member Avatar for Celena

Can you tell me how to do a differntial image using Windows 10 and with the what free software?

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A quick, practical answer and a safe workflow.

A differential backup stores only data changed since the last full image; to restore you need the original full image plus the most recent differential (incremental chains work differently). (easeus.com)

For a Windows system image you want a tool that does block-level imaging (captures the EFI/boot partition and the registry) and that uses Volume Shadow Copy so snapshots are application-consistent while Windows runs. Built‑in “System Image” functionality is effectively deprecated in modern Windows, so prefer a supported third‑party imaging tool. (learn.microsoft.com)

Recommended checklist (apply with any VSS-aware imager that explicitly lists “differential”):

  • Create a full baseline image that includes the system/EFI/reserved partitions and store it on an external drive or NAS.
  • Build bootable recovery media (WinPE/USB) immediately — you’ll need that to restore if Windows won’t boot.
  • Configure scheduled differentials (daily or whatever matches how fast your system changes) and a periodic full (weekly/monthly depending on your change rate).
  • Enable automatic verification (or mount the image occasionally) and practice a test restore to a VM or spare disk.
  • Keep at least one offline/offsite copy and monitor free space — differential files grow until a new full is made.

Not all free tools expose differential imaging in their no‑cost edition; check vendor feature pages before you commit (some free editions omit differential backups, while other community/free editions do include them). (aomeitech.com)

A couple of quick troubleshooting notes: if a job fails check VSS writers (run vssadmin list writers), confirm destination space and permissions, and avoid saving images on the same physical disk you’re backing up. Follow ’s caution — simple file comparisons won’t show boot/registry problems, which is exactly why block‑level imaging is the right approach for a full system image.

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Member Avatar for rproffitt

This may need a lot more detail from you. I've had folk ask such to find out why Windows is not booting but given the boot area is not something a normal tool will tackle, this is just one of a few areas that file comparisons won't tell you a thing.

So, WinMerge can compare two drives but it also means that the two drives under inspection are NOT being used to boot Windows.

Finally a big area of fail is the registry. To compare that you would have to export both then try WinMerge to see where the changes are. My bet is you will understand why they say this is like taking a sip from a firehose.

-> With that in mind, can you tell more about why you need to do this?

Member Avatar for Reverend Jim

I use Macrium Reflect (free home edition) and I have it set to automatically do a full image of C: at the start of the month and a differential every day.

Member Avatar for Bert Pitt

You can download the Daemon Tools Ultra. The software has all the necessary tools. I think that a three-day free period is enough for you.

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