Cube Speed Run Mac Version Mac OS

7 46 likes 227,807 views Last modified Mar 3, 2021 4:47 PM

This tip replaces version 2126 originally released on the Discussions Feedback forum.

Apple said that would run happily on a late 2009 or later MacBook or iMac, or a 2010 or later MacBook Air, MacBook Pro, Mac mini or Mac Pro. If you Mac is supported read: How to update to Big Sur. These are the two models used for all tests presented in this table: MacBook Pro (13-inch, Late 2013): 2.4 GHz Intel Core i5, 8 GB RAM, Intel Iris 5100 (1.5GB) MacBook Pro (13-inch, Late 2016): 2.0 GHz Intel Core i5, 8 GB RAM, Intel Iris Graphics 540 (1.5GB).


Find the serial number on:



Plug your serial number in at this link:



Do not use third party links as they may not be secure.

Do not post the serial number on this board, as that is your key to any support you may have left.

Use this tip also to help figure out which portion of the Support Community to post in, as this tip explains:



When you have no serial number, use one of these third party sites to find your model, production year, time in year

(early, middle, late, summer, fall, winter, spring):




Note:

PowerMac, PowerPC, eMac, iMac PPC, iBook (Apple recycled the name iBook for its eBook application on new Macs and iOS devices), Powerbook, Classic all refer to Macs that are older than the present series

of Macs. Posting in those forums about a current Mac, shows you have not researched your Mac sufficiently to get a succinct answer to your query. Apple menu -> About This Mac will tell you the Mac OS version or System version you are running. The X in the version is important, and so is the preceding 10 in the version if it exists.

Questions saying X.1 could refer to Mac OS X 10.13.1, 10.1. Don't truncate the version you see.




There are no iOS forums specific to the operating system found on iPads, iPod Touch, AppleTV, Apple Watch, and iPhones. Figure out the type of portable device you are running to ask a question about that device specifically.


Apple has these identifying articles as well:


http://support.apple.com/kb/ht3255 - MacBook Air

http://support.apple.com/kb/ht1635 - MacBook

http://support.apple.com/kb/ht4132 - MacBook Pro

http://support.apple.com/kb/ht3476 - Mac Mini

http://support.apple.com/kb/HT6069 - Mac Pro

http://support.apple.com/kb/ht1758 - iMac
http://support.apple.com/kb/sp96 and http://support.apple.com/kb/sp37 - PowerMac G5

http://support.apple.com/kb/TA25585 and http://support.apple.com/kb/ht3082 - PowerMac G4

http://support.apple.com/kb/TA22033 - PowerMac G3

http://support.apple.com/kb/ht3065 - Powerbook G4

http://support.apple.com/kb/ht2395 - eMac

http://support.apple.com/kb/ht2287 - Powerbook G3

http://support.apple.com/kb/ht1772 - iBook


Macs generally will not run an older Mac OS X operating system than shipped with them.

The one exception is virtualizing 10.6 Server on 10.7 or later, which is described later.


Also important to note is that the Apple App Store only has 10.7, 10.8, and 10.12, except for those who purchased in between systems, and have a Mac that shipped with in between systems. For all others if you need an in between system, and your Mac is older, contact the App Store tech support.

A quick upgrade guide has been posted on


These dates are important for recognizing what Mac OS X will run on Macs. Macs released on or after (including their model #s or name

where known):

September 30, 2018 will only run 10.14 or later

• MacBook Air 8,x

• Mac Mini 8,x


September 25, 2017 will only run 10.13 or later.

  • iMac Pro 1,1
  • MacBook Pro 15,x (2018 model)


June 5, 2017 Mac models (all 2017 Models except iMac Pro) will only run 10.12.5 or later

• MacBook Pro 14,x

• MacBook Air 7,2

• MacBook 10,1

• iMac 18,x

September 20, 2016 will only run 10.12 or later.

  • MacBook Pro with touchbar (instead of physical F keys)
  • MacBook Pro 13,x
  • iMac 18,x
  • MacBook Air 7,2 see this article on which ones could only run 10.12 or later.


September 30, 2015 will only run 10.11 or later. These Macs are the first Macs that can be upgraded directly to

Mac OS 10.14 without installing any other software.

  • iMac 16,x and 17,x
  • Macbook 9,x (these Macbooks came with the USB-C, instead of the USB 2 or USB 3 connector. USB 3 and 2 look identical on the outside, use System Profiler to determine which you have)


October 16, 2014 will only run 10.10 or later (10.10 is only available for Macs that shipped with it).

  • MacBook Air 7,1 and 7,2 (some models could only run 10.12 or later).
  • Mac Mini 7,x
  • iMac MF885LL/A came with 10.10.2. All other 15,x came with 10.10.0
  • MacBook 8,x - the oldest that can run Mac OS 10.14 with this model name after installing 10.11 or later.
  • MacBook Pro 11,4 and 11,5


October 22, 2013 will only run 10.9 or later (10.9 is only available for Macs that shipped with it).

  • Macbook Pro 11,1 through 11,3
  • Mac Pro 6,x
  • MacBook Air Early 2014
  • Mac Mini 6,x
  • iMac 14,4


June 25, 2012 will only run 10.8 or later. 10.8 through 10.11 are supported by these Macs [indicate machine ID found in profiler], and newer models may run some variety of 10.9, 10.10, or 10.11):


  • MacBook Pro with Retina EMC 2557 from 2012 and 2013 and later models.
  • MacBook Air (2013 or newer) [6,1]
  • MacBook Air (Mid 2013 or newer) [6,1]
  • Mac mini (Late 2012 or newer) [6,1] - the oldest that can run 10.14 after installing 10.11 or later.
  • iMac (Late 2012 or newer) [13,1]
  • Mac Pro (Late 2013) [6,1]

These models above are the first models that can be upgraded directly to High Sierra 10.13 without other prior upgrades.


The oldest MacBook Air and iMac that can run Mac OS 10.14 after installing 10.11.

• MacBook Air 5,1

• iMac 12,1


These Macs which are older can also be upgraded to 10.12 by upgrading to 10.7.5 first, and 10.13 by upgrading to 10.8 first:


  • MacBook (Late 2009 or newer) 6,1
  • MacBook Pro (Mid 2010 or newer) 6,1
  • MacBook Air (Late 2010 or newer) 3,1.
  • Mac mini (Mid 2010 or newer) 4,1
  • iMac (Late 2009 or newer) 10,1
  • Mac Pro (Mid 2010 or newer) 5,1


The Macs are compatible with 10.8 and later from prior 10.8's release

  • Mac Pro (Early 2008 with AirPort Extreme card, or Mid 2012) [3,1]-[5,1] (Earlier Mac Pros are discussed on the 10.8 upgrade tip).
  • MacBook Late 2008 [5,1] to mid 2010 [7,1] with no Pro or Air in the name.
  • iMac (Early 2009 to mid-2011) [9,1] to [12,1]
  • Mac mini (Mid 2010 to mid 2011) [4,1] to [5.1]
  • MacBook Air (Late 2010 to mid-2012 [3,1]-[5,2]
  • MacBook Pro Late 2008 [5,1] to Retina 2012 that are not EMC 2557.


July 20, 2011 will only run 10.7 or later. The model IDs (x,x) and EMC that fit this description until June 25, 2012 release of 10.8 (excluding the ones which will run only 10.8 or later earlier mentioned) :

iMac of an EMC of 2496; 13,x and later.

Mac Mini 5,x and later.

Macbook Air 4,x and later.

MacBook 8,x and later (no Pro no Air in the name)

Mac Pro 5,1 with EMC 2629 - the oldest that can be have Mac OS 10.14 installed after installing 10.11 or later, those without that EMC number came with 10.6 and can also be updated to 10.14 the same manner; 6,x and later.


MacBook Pro with EMC 2555, 2563; 9,x and later.


Note all the Macs that can only run 10.7 and later, may be able to run 10.6 Server with Parallels, if you need compatibility with an older operating system:


Beyond this point Macs released during certain date ranges also have a maximum operating system, and/or

minimum retail operating system and system specific operating system requirement (when I say up to 10.9 that includes all incremental updates):


Note: images shown below for retail operating system are those that have no 'Update, Dropin, or OEM' wording on them.


March 15, 2010-July 19, 2011 will only run prebundled 10.6 installer disc, and not retail, but also able to be upgraded to 10.9. Note this tip

if upgrading to 10.7 or later: https://discussions.apple.com/docs/DOC-6271


August 28, 2009-March 14, 2010 will only 10.6 or later up to 10.9. And will at minimum be able to use

10.6.3 retailto install 10.6. Note this tip if upgrading to 10.7 or later: https://discussions.apple.com/docs/DOC-6271


During 2000 to 2009, the serial number also made it easier to identify the Macs, as the 3rd, 4th, and 5th character of the serial number referred to the week

and year of the shipment date. Thus for serial numbers where x can be any letter or number, xxABCxxxxx serial numbers would refer to an A which is the last digit of the year, and BC=week of the year. xx905xxxx is the fifth week of 2009. You can then use Wikipedia to figure out what date the release was, and if it was after a specific retail release of an operating system to determine which pre bundled disc it came with, and which later retail discs the Mac could work with.


December 15, 2008-August 28, 2009 will only run prebundled 10.5 installer disc, and 10.6 retail https://discussions.apple.com/content/attachment/43236040snow.jpg, and if on https://discussions.apple.com/docs/DOC-3761

will also run up to Mac OS X 10.11 if you follow this tip: https://discussions.apple.com/docs/DOC-6271


October 28, 2007 -December 14, 2008 will at minimum be able to use the 10.5.6 retail, and install up to 10.9 if included on https://discussions.apple.com/docs/DOC-3761 if you follow this tip https://discussions.apple.com/docs/DOC-6271


January 10, 2006-October 27, 2007 will at minimum be able to 10.5 retail, and if

on Which 10.5 systems can upgrade to 10.8 or 10.9?or Are there 10.4 systems that can upgrade to 10.8 or 10.9? are

able to run 10.9. Core2Duo and Xeon can upgrade to a minimum of 10.7.5. Otherwise if they only have a CoreDuo, CoreSolo Intel

processor only be able to upgrade to Mac OS X 10.6.8. G5, G4, and G3 processors are not Intel.


Earlier dates are covered on this tip:Can I download my Mac OS upgrade?


Using the dates from the above documents, and the dates according to Wikipedia when specific retail

operating system systems were released, you can find which retail releases were newer than the Macs and the ones immediately older.


i.e.:

An October 24, 2011 Macbook Pro will only run 10.8 retail, and 10.9 retail downloads, but needs an

AppleCare requested 10.7 installer to install 10.7. An exception exists in 10.6 Server, as indicated here:


A pre-October 26, 2007 MacBook Pro will only run the system specific Mac OS X 10.4 installer

that shipped with it, which can be ordered from AppleCare, or newer retail installer versions

of 10.5, 10.6 compatible with its hardware, and 10.7 if it is at least a Core2Duo.

CoreDuo, nor is CoreSolo is not compatible with 10.7.


For PowerPC Macs, Mac OS X 10.4.11 and earlier offer Classic compatibility, and on certain 2003 and earlier Macs dual booting on Mac OS X 10.5 & Mac OS 9:



No Mac may run an older version of Mac OS 9 than was prebundled with it.


A more precise timeline of Mac OS X follows (in U.S. date notation. Links to relevant articles up to 10.7 are included, as 10.7 drops PowerPC applications on Intel):


4/8/2015 10.10.3 (with supplemental on 4/16/2015)

1/27/2015 10.10.2

11/17/2014 10.10.1

10/16/2014 10.10 Yosemite

9/17/2014 10.9.5

6/30/2014 10.9.4

5/15/2014 10.9.3

2/25/2014 10.9.2

10/22/2013 10.9 (10.9 & 10.9.1 should be skipped due to security issues) Mavericks

10/3/2013 10.8.5 supplemental update

9/25/2013 10.8.4 iMac Late 2013

6/10/2013 10.8.4 MacBook Air mid 2013

6/4/2013 10.8.4

3/14/2013 10.8.3

11/29/2012 10.8.2 Mac MIni Late 2012

10/4/2012 10.8.2 supplemental update

10/4/2012 10.7.5 supplemental update

8/23/2012 10.8.1

7/25/2012 10.8 Mountain Lion

5/9/2012 10.7.4

2/1/2012 10.7.3

10/12/2011 10.7.2

8/16/2011 10.7.1

7/25/2011 10.6.8 v1.1


5/4/2011 10.6.7 Early 2011 MacBook Pro

3/21/2011 10.6.7

1/6/2011 10.6.6

11/10/2010 10.6.5

6/15/2010 10.6.4

4/13/2010 10.6.3 v1.1

4/1/2010 10.6.3 retail installer presently sold at the online Apple Store.

8/28/2009 10.6 retail installer (Snow Leopard)


12/15/2008 10.5.6 retail installer (Last PowerPC installer)


6/30/2008 10.5.4 retail installer


11/15/2007 10.5.1 retail installer


10/26/2007 10.5 retail installer (Leopard)


8/7/2006 Mac Pro (Intel, first Snow Leopard compatible professional desktop) replaces PowerMac G5 (the last PowerPC Mac and Mac capable of running Classic)

Mac


5/16/2006 The MacBook replaces the iBook (the last consumer notebook capable of running Classic)

4/3/2006 10.4.6 retail PowerPC only.

2/28/2006 First Intel Mac Mini (not capable of running Classic, first Mac)

1/10/2006 First Intel iMacs, MacBook Pro replaces Powerbook (first Macs not capable of running Classic, first Mac capable of running Snow Leopard)

10/31/2005 10.4.3 retail PowerPC only.

8/9/2004 10.3.5 retail

12/17/2003 10.3.2 retail

12/19/2002 10.2.3

Some hints about operating systems:

- Mac OS X 10.8 or later are required to sync with iOS 9.2 or 9.2.1.

- No PowerPC Mac can run Mac OS X 10.5.8 or higher, or sync with iOS 6 or higher.

- No PowerPC Mac can run Boot Camp

- No Mac can run Classic (side by side Mac OS 9 with Mac OS X without reboot) on the same partition as Mac OS X 10.5 or higher.

- No Intel Mac can run Classic.

- All Intel Macs can run at least Mac OS X 10.6.8 as long as they are older than Mac OS X 10.7's release.

- PowerPC applications need Mac OS X 10.6.8 or earlier to run on Intel Macs.

- Boot Camp needs Mac OS X 10.5 or later on Intel Macs. Note other virtualization tools are available for Mac OS X 10.4.11 or earlier on Intel Macs.

- Mac OS X 10.7.3 is needed for the latest Java and minimum iCloud.

- The same minimum system requirements exist for Mac OS X 10.8, 10.9, 10.10, and 10.11.

- 10.6.6 is the minimum for the Mac App Store, and upgrading to 10.7 without erasing the drive you install 10.7 on if the hardware supports it.

- 10.6.8 is the minimum for 10.8 or later upgrades if the hardware supports it.

- Apple has a 10.6.8 to 10.11 updateon the App Store.

- Some Macs that shipped with 10.6 can install up to 10.12 if they are upgraded to 10.7.5 first.

pygame.examples.aliens.mainplay the full aliens example
pygame.examples.oldalien.mainplay the original aliens example
pygame.examples.stars.mainrun a simple starfield example
pygame.examples.chimp.mainhit the moving chimp
pygame.examples.moveit.maindisplay animated objects on the screen
pygame.examples.fonty.mainrun a font rendering example
pygame.examples.freetype_misc.mainrun a FreeType rendering example
pygame.examples.vgrade.maindisplay a vertical gradient
pygame.examples.eventlist.maindisplay pygame events
pygame.examples.arraydemo.mainshow various surfarray effects
pygame.examples.sound.mainload and play a sound
pygame.examples.sound_array_demos.mainplay various sndarray effects
pygame.examples.liquid.maindisplay an animated liquid effect
pygame.examples.glcube.maindisplay an animated 3D cube using OpenGL
pygame.examples.scrap_clipboard.mainaccess the clipboard
pygame.examples.mask.maindisplay multiple images bounce off each other using collision detection
pygame.examples.testsprite.mainshow lots of sprites moving around
pygame.examples.headless_no_windows_needed.mainwrite an image file that is smoothscaled copy of an input file
pygame.examples.fastevents.mainstress test the fastevents module
pygame.examples.overlay.mainplay a .pgm video using overlays
pygame.examples.blend_fill.maindemonstrate the various surface.fill method blend options
pygame.examples.blit_blends.mainuses alternative additive fill to that of surface.fill
pygame.examples.cursors.maindisplay two different custom cursors
pygame.examples.pixelarray.maindisplay various pixelarray generated effects
pygame.examples.scaletest.maininteractively scale an image using smoothscale
pygame.examples.midi.mainrun a midi example
pygame.examples.scroll.mainrun a Surface.scroll example that shows a magnified image
pygame.examples.camera.maindisplay video captured live from an attached camera
pygame.examples.playmus.mainplay an audio file

These examples should help get you started with pygame. Here is a brief rundownof what you get. The source code for these examples is in the public domain.Feel free to use for your own projects.

There are several ways to run the examples. First they can be run asstand-alone programs. Second they can be imported and their main() methodscalled (see below). Finally, the easiest way is to use the python -m option:

eg:

Resources such as images and sounds for the examples are found in thepygame/examples/data subdirectory.

You can find where the example files are installed by using the followingcommands inside the python interpreter.

On each OS and version of Python the location will be slightly different.For example on Windows it might be in 'C:/Python26/Lib/site-packages/pygame/examples/'On Mac OS X it might be in '/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/pygame/examples/'

You can also run the examples in the python interpreter by calling each modules main() function.

We're always on the lookout for more examples and/or example requests. Codelike this is probably the best way to start getting involved with pythongaming.

examples as a package is new to pygame 1.9.0. But most of the examples came withpygame much earlier.

aliens.main()
aliens.main() -> None

This started off as a port of the SDL demonstration, Aliens. Now it hasevolved into something sort of resembling fun. This demonstrates a lot ofdifferent uses of sprites and optimized blitting. Also transparency,colorkeys, fonts, sound, music, joystick, and more. (PS, my high score is117! goodluck)

oldalien.main()
oldalien.main() -> None

This more closely resembles a port of the SDL Aliens demo. The code is alot simpler, so it makes a better starting point for people looking at codefor the first times. These blitting routines are not as optimized as theyshould/could be, but the code is easier to follow, and it plays quickenough.

stars.main()
stars.main() -> None

A simple starfield example. You can change the center of perspective byleftclicking the mouse on the screen.

chimp.main()
chimp.main() -> None

This simple example is derived from the line-by-line tutorial that comeswith pygame. It is based on a 'popular' web banner. Note there are commentshere, but for the full explanation, follow along in the tutorial.

moveit.main()
moveit.main() -> None

This is the full and final example from the Pygame Tutorial, 'How Do I MakeIt Move'. It creates 10 objects and animates them on the screen.

Note it's a bit scant on error checking, but it's easy to read. :]Fortunately, this is python, and we needn't wrestle with a pile of errorcodes.

fonty.main()
fonty.main() -> None

Super quick, super simple application demonstrating the different ways torender fonts with the font module

freetype_misc.main()
freetype_misc.main() -> None

A showcase of rendering features the class provides in addition to those available with .It is a demonstration of direct to surface rendering, with vertical textand rotated text, opaque text and semi transparent text, horizontallystretched text and vertically stretched text.

vgrade.main()
vgrade.main() -> None

Demonstrates creating a vertical gradient with pixelcopy and NumPy python.The app will create a new gradient every half second and report the timeneeded to create and display the image. If you're not prepared to startworking with the NumPy arrays, don't worry about the source for this one :]

eventlist.main()
eventlist.main() -> None

Eventlist is a sloppy style of pygame, but is a handy tool for learningabout pygame events and input. At the top of the screen are the state ofseveral device values, and a scrolling list of events are displayed on thebottom.

This is not quality 'ui' code at all, but you can see how to implement verynon-interactive status displays, or even a crude text output control.

arraydemo.main()
arraydemo.main(arraytype=None) -> None

Another example filled with various surfarray effects. It requires thesurfarray and image modules to be installed. This little demo can also makea good starting point for any of your own tests with surfarray

Mac os downloads

The arraytype parameter is deprecated; passing any value besides 'numpy'will raise ValueError.

sound.main()
sound.main(file_path=None) -> None

Extremely basic testing of the mixer module. Load a sound and play it. Allfrom the command shell, no graphics.

If provided, use the audio file 'file_path', otherwise use a default file.

sound.py optional command line argument: an audio file

sound_array_demos.main()
sound_array_demos.main(arraytype=None) -> None

Uses sndarray and NumPy to create offset faded copies of theoriginal sound. Currently it just uses hardcoded values for the number ofechoes and the delay. Easy for you to recreate as needed.

The arraytype parameter is deprecated; passing any value besides 'numpy'will raise ValueError.

liquid.main()
liquid.main() -> None

This example was created in a quick comparison with the BlitzBasic gaminglanguage. Nonetheless, it demonstrates a quick 8-bit setup (with colormap).

glcube.main()
glcube.main() -> None

Using PyOpenGL and pygame, this creates a spinning 3D multicolored cube.

scrap_clipboard.main()
scrap_clipboard.main() -> None

A simple demonstration example for the clipboard support.

mask.main()
display multiple images bounce off each other using collision detection

Positional arguments:

This pygame.masks demo will display multiple moving sprites bouncing offeach other. More than one sprite image can be provided.

If run as a program then mask.py takes one or more image files ascommand line arguments.

testsprite.main()
testsprite.main(update_rects = True, use_static = False, use_FastRenderGroup = False, screen_dims = [640, 480], use_alpha = False, flags = 0) -> None

Optional keyword arguments:

Like the testsprite.c that comes with SDL, this pygame version showslots of sprites moving around.

If run as a stand-alone program then no command line arguments are taken.

headless_no_windows_needed.main()
write an image file that is smoothscaled copy of an input file
headless_no_windows_needed.main(fin, fout, w, h) -> None

arguments:

How to use pygame with no windowing system, like on headless servers.

Thumbnail generation with scaling is an example of what you can do withpygame.

NOTE: the pygame scale function uses MMX/SSE if available, and can berun in multiple threads.

If headless_no_windows_needed.py is run as a program it takes thefollowing command line arguments:

fastevents.main()
fastevents.main() -> None

This is a stress test for the fastevents module.

So far it looks like normal is faster by up to twotimes. So maybe fastevent isn't fast at all.

Tested on Windows XP SP2 Athlon, and FreeBSD.

However... on my Debian Duron 850 machine fastevents is faster.

overlay.main()
overlay.main(fname) -> None

Play the .pgm video file given by a path fname.

If run as a program overlay.py takes the file name as a command lineargument.

blend_fill.main()
demonstrate the various surface.fill method blend options

A interactive demo that lets one choose which BLEND_xxx option to apply to asurface.

blit_blends.main()
uses alternative additive fill to that of surface.fill

Fake additive blending. Using NumPy. it doesn't clamp. Press r,g,b Somewhatlike blend_fill.

cursors.main()
cursors.main() -> None

Display an arrow or circle with crossbar cursor.

pixelarray.main()
pixelarray.main() -> None

Display various pixelarray generated effects.

scaletest.main()
scaletest.main(imagefile, convert_alpha=False, run_speed_test=True) -> None

arguments:

A smoothscale example that resized an image on the screen. Vertical andhorizontal arrow keys are used to change the width and height of thedisplayed image. If the convert_alpha option is True then the source imageis forced to have source alpha, whether or not the original images does. Ifrun_speed_test is True then a background timing test is performed instead ofthe interactive scaler.

If scaletest.py is run as a program then the command line options are:

midi.main()
midi.main(mode='output', device_id=None) -> None

Arguments:

The output example shows how to translate mouse clicks or computer keyboardevents into midi notes. It implements a rudimentary button widget and statemachine.

The input example shows how to translate midi input to pygame events.

With the use of a virtual midi patch cord the output and input examples canbe run as separate processes and connected so the keyboard output isdisplayed on a console.

new to pygame 1.9.0

scroll.main()
run a Surface.scroll example that shows a magnified image

This example shows a scrollable image that has a zoom factor of eight. Ituses the Surface.scroll()function to shift the image on the display surface.A clip rectangle protects a margin area. If called as a function,the example accepts an optional image file path. If run as a program ittakes an optional file path command line argument. If no file is provided adefault image file is used.

When running click on a black triangle to move one pixel in the directionthe triangle points. Or use the arrow keys. Close the window or pressESC to quit.

camera.main()

Cube Speed Run Mac Version Mac Os Update

display video captured live from an attached camera

A simple live video player, it uses the first available camera it finds onthe system.

playmus.main()

Cube Speed Run Mac Version Mac Os Catalina

playmus.main(file_path) -> None

Cube Speed Run Mac Version Mac Os Catalina

A simple music player with window and keyboard playback control. Playback canbe paused and rewound to the beginning.