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Old March 11th 19, 07:24 AM posted to alt.windows7.general
JJ[_11_]
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Posts: 744
Default Did Miscrosoft change how it dates files?

On Sun, 10 Mar 2019 22:23:09 -0700, pyotr filipivich wrote:
Greetings

I have a batch file using Robocopy which is only suppose to copy
those files which are "newer" (I.e., modified) than the ones on the
drive. Usually, there is no problem. But tonight, as I go to close
up operations for the evening, it is copying far more files than
before. all tagged "newer".
Was there something magical about the shift to Daylight Savings
time which makes a source drive file dated "Jan 2 2019 10:20 AM" to
now be "newer" than the target drive file dated "Jan 2 2019 10:20
AM"?
I haven't changed "CHAR Sets.wpd" since 1996!?

I do remember something like this happening when the batchfile
correctly copied files from a flashdrive to the XP laptop, and then I
was done with the letter writing, the batchfile copied _all_ the files
just copied (but not used) back from the hardrive to the flash drive.

You'll have a great deal of difficulty convincing me that the
folks at Microsott really have an idea what they are doing.


The only probably cause is that the flashdrive is using FAT file system. FAT
has lower time resolution than NTFS, which is 2 seconds. So, if a file is
set to 10:20:33 AM by a software, the result would be 10:20:32 AM. CMD
doesn't show the seconds part, so if you use the file property dialog,
you'll see the difference in the seconds part.
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