What is a .dsk file? A .dsk file is a DiskDup image, an exact copy (sector by sector) of a floppy disk. DSK images were a popular format for cloning or duplicating 1980's and 1990's Macintosh floppy disks.   How to use or extract DSK images contents? DSK images are mountable and writeable/clonable onto real floppy disks.  Tough, remember that if you want to write a DSK image onto a real floppy disk using a Windows...

What is a .iso file? A .iso file is a disk image, meaning it's an exact copy (sector by sector) of a disk, e.g.: CD, DVD, USB stick, hard drive, etc... ISO images have been the most used file format for cloning or duplicating disks for a very long time, namely since the late 1980's along with the first consumer CD-ROM products.    How to use or extract ISO images contents? ISO images are mountable and...

What is a .toast file? A .toast file is a disk image of a media (CD, DVD, USB stick, hard drive, etc...) created by an application named Toast.  Note that a .toast disk image is almost exactly the same as an ISO disk image and in essence, one could absolutely rename any .toast file to .iso and use/mount it as such.  Therefore, please see this page instead: What is a .iso file (disk image) and how to use it?

What is a .woz file? A .woz file is an advanced Applesauce flux disk image, more details here: https://applesaucefdc.com/woz/