When writing data to a USB flash drive, does Windows guarantee its integrity?

Question

USB

Let's say I throw a folder on a USB flash drive through Windows Explorer.
A 16 GB flash drive, when it scanned, there was something like 90 - 95% of live sectors, and inanimate ones at the end.
1. Does Windows send dead sectors to the end as well as with SSD?
2. Does Windows guarantee the integrity of recorded files? Let's say this is a folder with a bunch of files of different sizes, totaling 1 GB. Or if I let's say I put 15 GB of files on the USB flash drive, will Windows report that the operation failed, since the last files in theory could not be placed on the USB flash drive due to bad sectors?
Thanks in advance !
Best regards,
Robert

Answer 1

If it is impossible to write to some sector, Windows will give an error. The same will happen if there is simply not enough space on the drive.
The integrity (correspondence to the original) of the data that was formally written (that is, the disk driver did not give any errors to the system) is not checked. There is a way to force the check, for example when working on the command line when executing xcopy /V. However, if caching is enabled for the given drive, this check does nothing, as it compares the source files and their contents in the in-memory cache.

Answer 2

Does Windows guarantee the integrity of written files?

No.
Returned, say, employees from a business trip from the United States. There they were given flash drives with technical information (PDF and JPG). Flash drives - advertising (the most worthless and cheap). Here they copied one flash drive to the server (everything was read) - about half of the files are broken: PDFs do not open or the first pages open, the rest are blank, JPG and show the top of the photo, then everything is black ... Well, the second flash drive turned out to be alive. Here is a real example of what will happen if you write critical information in a single copy on a worthless flash drive.