On one occasion, a computer user encountered a problem while transferring files using a USB thumb drive from Mac OS X to Windows XP. Usually, Windows XP detects the USB thumb drive automatically and list the file contents. On this rare occasion there’s no listing of the files inside, but a single .Spotlight-V100 hidden folder. I’ve got suspicious of the unusual presence of a .Spotlight-V100 hidden folder in a 1 GB USB Thumb drive.
The user have noted that the hidden .Spotlight-V100 folder appeared in the USB thumb drive after being used in an Apple Mac OS X Computer. I was speculating that this .Spotlight-V100 seems to be a worm replicated folder which infects USB flash drives. In the beginning when I received this complaint, I have no idea of what is this .Spotlight-V100 which the user talked about. It’s only later that I learned that Spotlight is a software that indexes the files on any volume mounted on a Mac OS X operating system running computer.
The user have used the 1 GB USB Flash Drive in swapping documents, spread sheet and power point files between Windows XP and Mac OS X machine which explains of the presence of the unusual .Spotlight-V100 hidden folder. The folder actually stores the indexed files found on the USB thumb drive. The ones exempted from indexing are CD’s, DVD’s, shared volumes or network-attached files.
It was just a coincidence maybe that the access to the USB thumb drive did not list the content of the USB drive. The user have some fears that maybe .Spotlight-V100 is a worm generated folder which infected the USB Thumb Drive which was used with a Mac OS X running Apple Machine. I got hold of the said USB thumb drive and it is negative of any virus or worm.
When I plugged the USB Thumb Drive on a Windows XP machine it was detected and it showed all the files that the user said to be “missing”. I don’t want to think much about it, but I guess the incompatibility of the operating system running have affected the way how the USB thumb drive worked which caused it to malfunction. If you find one of these on your USB thumb drive don’t be scared of it and don’t delete it. Spotlight-V100 folder is somehow a valid program folder.