An ISO image is an archive of an optical disc. It is one of the ways of storing big-sized data files.
For windows ISO, there are various types of ISO’s available depending on windows version and bit-size.
Performing a windows installation is usually better when done using an ISO file, because it is done offline, hence no data loss in case of either power black-out or internet problems.
However, one has to download the ISO file, and also a software to convert the ISO file into a bootable medium. Preferably, use PowerISO, to create your bootable medium. See more here.
Windows ISO files include:
- Windows 10 pro (both 32bit and 64 bit)
- Windows 8.1 (both 32bit and 64 bit)
- Windows 7 (both 32bit and 64 bit), including , windows 7 professional and ultimate
- Windows XP
- Windows Vista etc.
You can get all these ISO files, using this link. Get ISO files here.