trashes virus in my memory card.. how to remove?

In Windows XP use Unlocker to delete the folder.. if not possible, you may have to connect the memory card to a computer with Mac OS X to delete the folder.

.Trashes folder exists on external drive
http://www.defcon-5.com/support/index.cfm?docid=170

I had the same problem. I primarily use a Windows PC. After plugging in an external hard disk/drive to a friend's Mac I not only had new annoying folders and files (.trashes, .fseventsd, ._.trashes), my drive also became write protected so I could not delete these files in Windows, nor could I really do anything but read existing files on the drive. Stupid mac. This is like a virus. There was nearly nothing available online regarding this matter. Simple fixes did not work (regedit fix, unlocker fix, batch file delete fix, etc.). So here is what worked for me.

- I used an old windows vista setup (same problem observed under Windows 8)
- WinXP would not even read the drives (indicated that they were not formatted)


1) Under Administrative Tools>>Computer Management>>Disk Management
-- Check and see what type of file system your drive is. Typically for windows, your drive will be formatted to NTFS. Yet, somehow, plugging into a mac automatically converted my drive from NTFS to exFAT. I have no idea how this happened. I would never have formatted my drive to exFAT. And I was surprised to see them as such.
-- This step is more to address this issue to anyone else who may understand why this happened.

2) Open a command prompt (Start>cmd)

3) Change directory to the problem drive. (ex. "cd s:" for the s: drive) (no quotes)

4) Run chkdsk on the drive. (ex. "chkdsk s:/f" - automatically fixes issues) (no quotes)

5) Answer "y"es if/when asked to unmount the drive.

6) Finished

- For some reason, even though there were no errors on the drive, this procedure worked for me. All write protection from the drive was removed, and I was able to delete those files and my drive returned to normal function.
- The drive is still exFAT, but, that is just a nuisance that I'll save for another day. I might just keep it.. even though I rarely see a mac.

I hope this works for you.

Since I had such a difficult time finding a solution, the following are search terms that I hope will help lead others to this solution.

delete .trashes, .fseventsd, ._.trashes, using windows or pc
remove .trashes, .fseventsd, ._.trashes, using windows or pc
remove write protection from drive
write protection on drive after using on mac

Thanks for sharing dude!... nice and simple solution.
About your external HD's exFAT file system, it's a Microsoft file system optimized for flash drives that's compatible with Mac so it doesn't necessarily have to be a nuisance... if your XP is having trouble with it, install Update for Windows XP KB955704.

exFAT (Extended File Allocation Table)
http://en.wikipedia.org/wiki/ExFAT