VanguardLH Tue, 26
Dec 2017 20:49:56 GMT in alt.windows7.general, wrote:

No, it did not change the extensions of the files. CHK files are
recovered file fragments due to a corrupted file system. chkdsk
could not ascertain for sure to which original file an orphaned
cluster belongs so it reallocates the cluster into the file system
giving it a generic fileXXXX.chk filename. CHK files are
lost/orphaned fragments of files that are protected from
overwriting by allocating them to new .chk files in the existing
file system. You should run 'chkdsk drive: /r' on that flash
drive. It has a corrupted file system, or had a corrupted file
system if the "fix" was to run chkdsk.

Yep. To further elaborate on what you wrote that I snipped for brevity,
it's possible the user partially corrupted the drive contents by
removing it from his Linux machine too soon. By that I mean, didn't
tell his linux machine he was done with the drive and just pulled it.



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