How to verify the integrity of a file? 1 of 2 files is corrupt


Extraordinary Member
Assume I have a certain huge (> 2 GB) file and a second backup version of it on an external hard disk.

Both have exactly the same size and dates.

However when I compare them binary at the cmdprompt simplified with

fc /b D:\myfile123.enc H:\myfile123.enc

Then there are somewhere differences.
I guess these differences could be because of a previous errorneous copy operation in the past (or defect DVD).

Is there a way to find out which of them is corrupted and which is the valid file?

Is there e.g. somewhere a CRC32 hash code in the Alternate Date Stream?
Or in NTFS table?

Or can I check occupied NTFS clusters just for this file (not whole hard disk)?



Windows Forum Team
Staff member
Premium Supporter
In this senario no... if you had another (3rd) drive we could run a logic test.

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