From what I understand, linux applies mount options to ntfs. Then if I want to change a file's permissions, I suppose it stores them somewhere on system disk or memory? If a lot files need to have permissions changed in different ways, can this use a lot of space? By the way, in general when I write to ntfs, can I expect any kind of problems when windows accesses the same disk?

Linux doesn't store any settings or file permissions as such. NTFS file system has those as part of the filesystem. The driver that allows linux to read and write to that drive simply interprets them for the user/os.

Yes, one could mess up a system to the point of being unusable to the Windows OS. You have to be somewhat careful when writing to a ntfs drive. This is also true for a bartsPE disk or a ntfsdos disk access.

Your best bet is to make a folder in windows and set permissions. Then access that folder alone. Move the files or adjust permissions from within windows. Windows is always modifying it's ntfs filesystem and linux can't keep up with changes in some cases. NTFS-3G support is still considered a user beware, you have been warned deal.

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the best practice for a NTFS shared disk is to set fstab to let "ro" for everyone but "rw" for root only

ie. become root to actually write to a ntfs drive


That though is not always practical if there are many users .

in those cases as jefro posted set one folder for every one to use

from MS windows it would look something like this
D:\\share\user1
D:\\share\user2
D:\\share\user3
and mount "share" as the for everyone folder

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