Why do empty .tmp files appear on a flash drive?

I

Ivan2021-04-14 16:23:07

USB

Ivan, 2021-04-14 16:23:07

The root of the USB flash drive was opened in the explorer. I drank tea, so the computer was inactive. At one point, I noticed how a file like rtrBB93.tmp appeared and immediately disappeared. He restored it right away. Its size is 1,073,741,824 bytes. Fully filled with zeros. I went through the folders and found another 9DF633D1.tmp (39,794 bytes). Same with zeros.

What can generate them? Windows is clean. Win10x64 20h2

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1 answer(s)

Z

Zettabyte, 2021-04-15
@PDEMON

This is most likely Windows ReadyBoost. At least the first (seven-character) file name is also similar. You can turn it off if you wish.
The file it creates may also be called ReadyBoostPerfTest.tmp , and if my memory serves me, perf.tmp or perftest.tmp .