System 2.0

System 2.0 was released in April 1985, nearly a full year after Apple released its previous software update for the Macintosh. It supported the the existing Mac lineup at the time, which included the Macintosh 128K, 512K, and XL. The only later model that could boot System 2.0 was the Macintosh 512Ke.

Features
The most significant improvement System 2.0 provided was performance. Startup time was reduced by 20%. Also, the ImageWriter received a new icon and a capitalized W.

A significant amount of work was done in the Finder, reflected by a leap in the version number from 1.1 to 4.1 (it took another three years for the Finder and System version numbers to become aligned). The disk icons lost the black shutter in favour of a nearly fully white look.

Apple removed the Finder menu commands Put Back and Close All. Newly added Finder commands included New Folder (which finally ended the Empty Folder saga), Print Catalogue (printed the index of disk contents to the default printer), Use MiniFinder (launched a simple At Ease-like launcher window instead of the memory-hungry Finder) and Shut Down.

Apple also introduced the precursor to the Chooser Desk Accessory, called Choose Printer.

Dragging a disk icon to the Trash (Wastebasket) to eject the disk was first implemented in System 2.

In list views, file icons were added next to the text, unlike in the System 1 text-only list views.

However, System 2.0 inherited a problem from System 1.1 when rebuilding the Desktop. Because HFS was not yet available, rebuilding the desktop meant that all folders were removed and all files ended up directly inside the root of the disk. MFS (the original Macintosh Filing System) did not support nested folders, and all folder information was stored in the Finder's Desktop database.