# Mac OS X 10.1

Mac OS X 10.1 (code named Puma) is the second major release of macOS, Apple's desktop and server operating system. It superseded Mac OS X 10.0 and preceded Mac OS X Jaguar. Mac OS X 10.1 was released on September 25, 2001, as a free update for Mac OS X 10.0 users. The operating system was handed out for free by Apple employees after Steve Jobs' keynote speech at the Seybold publishing conference in San Francisco. It was subsequently distributed to Mac users on October 25, 2001, at Apple Stores and other retail stores that carried Apple products.
Mac OS X 10.1 was codenamed "Puma" because the internal team thought it was "one fast cat."

## System requirements

Supported computers:
* Power Mac G3
* Power Mac G4
* Power Mac G4 Cube
* iMac G3
* iMac G4,
* eMac,
* PowerBook G3, except for the original PowerBook G3
* PowerBook G4
* iBook
RAM:
* 128 megabytes (MB) (unofficially 64 MB minimum)
Hard Drive Space:
* 1.5 gigabytes (GB)

## Features

Apple introduced many features that were missing from the previous version, as well as improving overall system performance.
This system release brought some major new features to the Mac OS X platform:
* Mac OS X 10.1 introduced large performance increases throughout the system.
* The dock UI is updated to remove the stripes.
* Better support is added for CD and DVD burning in Finder.
* The Apple logo on the toolbar was changed.
* iTunes is made a system default for the first time.
* A new file sortinog option and option to allow users to hide the toolbar in System Preferences have been added.
* The log in screen had its Apple logo redesigned and gained the ability to set icons.
* DVDs can be played in the newly introduced Apple DVD Player.
* More printer support is added, being more than 200 out of the box.
* The AppleScript interface now allows scripting access to many more system components, such as the Printer Center, and Terminal, thus improving the customizability of the interface. As well, Apple introduced AppleScript Studio, which allows a user to create full AppleScript applications in a simple graphical interface.
* The Finder was enhanced to optionally hide file extensions on a per-file basis. The Cocoa API was enhanced to allow developers to set traditional Mac type and creator information directly without relying on Carbon to do it.
* ColorSync 4.0, a color management system and API, was introduced.
* Image Capture was inotroduced for acquiring images from digital cameras and scanners.
* Internet Explorer is updated to be based on Internet Explorer 5.1.2 with a few bug fixes.
* Menu Extras, a set of items the user can add to the system menu, were introduced, replacing the supplied Dock Extras.
Apple switched to using Mac OS X as the default on all then-new Macs with the 10.1.2 release.

### Applications found on Mac OS X 10.1 Puma

* Address Book
* AppleScript
* Calculator
* Chess
* Clock
* CPU Monitor
* DVD Player
* Image Capture
* iMovie
* Internet Connect
* Internet Explorer for Mac
* iTunes
* Mail
* Preview
* Process Viewer (now Activity Monitor)
* QuickTime Player
* Sherlock
* Stickies
* System Preferences
* StuffIt Expander
* TextEdit
* Terminal

## Release history

| Version | Build | Date | Darwin version | Notes |
| 10.1 | 5G64 | September 25, 2001 | 1.4.1 | Original retail CD-ROM release; 5L14 and 5L17b available after certain security updates |
| 10.1.1 | 5M28 | November 12, 2001 | 5.1 | Mac OS X Update 10.1.1: Information and Download |
| 10.1.2 | 5P48 | December 21, 2001 | 5.2 | Mac OS X Update 10.1.2: Information and Download |
| 10.1.3 | 5Q45 | February 19, 2002 | 5.3 | Mac OS X Update 10.1.3: Information and Download |
| 10.1.4 | 5Q125 | April 17, 2002 | 5.4 | Mac OS X Update 10.1.4: Information and Download |
| 10.1.5 | 5S60 | June 5, 2002 | 5.5 | Mac OS X Update 10.1.5: Information and Download; 5S66 after networking update |

## Timeline

* Timeline of Mac operating systems vte