File Systems supported by Mac OS X:
Mac uses the Mac OSX extended journaling filesystem, abreviated hfs+.
hfs+ stands for Hierarchal File System Plus.
HFS+ and cannot be read by Windows computers without the aid of third-party software.
Mac OS X uses the Mac OS Extended file system, also known as the Hierarchical File System, or HFS.
For installing files it's .dmg
HFS
If you mean mac of computers than its Apple
Mac OS
Mac OS X
Apple's Mac computers use their own operating system called Mac OS X. If required Windows can be installed and used on a Mac.
Macintosh computers can use many file types. .exe files are not compatible, nor are Windows System files such as .dll or .bat. Common files such as mp3, mp4, m4a, m4b, .mov, .au, .acc and .html are used by the Mac. There are hundreds of other file types that can be used by a Mac computer. Many Windows file formats can be used by a Mac by using applications from other companies which produce 'converters' which can enable the files on a Mac. MPEG Streamclip and VLC are two such converters.
HFS file system with addtional software windows can read it
get windows on your mac
Mac OS
The CUR file extension is only used by Microsoft's Windows operating system for cursor images.
The question mark's appearance on a Mac file indicates that the Mac is unable to locate the System software that it needs to open that file.
You can open a mpg file with Windows Media Player. The file can also be opened in Windows Movie Maker as well. Of course, you can't open it with a Mac OS unless you convert the file to a format used by the Mac system though.
No. Windows is (regrettably). Mac and Linux are the other main contenders.