Apple Mac OS X and locked files

I had a client whos Microsoft Windows 7 Fujitsu laptop I had to fix.

I used Hiren’s BootCD bootable Linux rescue CD to copy files from that laptop to my clients external harddrive and everything when without a problems.

When I started to move files from that external harddrive to my iMac (Actually to my drobo) I noticed that some (for some reason not all the files on that directory because) files were
locked so I could not move those files… I didn’t want to go thru all the files using graphical user interface so I had to find way to fix those files using command line.

So after a little bit searching I noticed that I can use chflags command to do what I wanted so I started terminal and said:

sudo chflags -R nouchg /Volumes/Drobo/UnCheck

That unlocked all the files from /Volumes/Drobo/UnCheck directory which was exactly what I wanted to do =) I had to do it to couple of other directories too but that was not a hard job
compared to doing all of this using graphical user interface =)

I still have no idea why some of those files were locked so if you know comment and let me know.