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Last modified by Drunk Monkey on 2022-12-08 12:01
From version 18.1
edited by Drunk Monkey
on 2022-12-08 12:01
Change comment: There is no comment for this version
To version 3.1
edited by Drunk Monkey
on 2021-08-04 06:22
Change comment: There is no comment for this version

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1 -{{box cssClass="box floatinginfobox" title="**Quick Links**"}}
2 -{{toc start="2" depth="5" numbered="true"/}}
3 -{{/box}}
4 -
5 -== Downgrade Big Sur (11.x) to Catalina (10.15) via an 11.x Host Computer ==
6 -
7 -{{warning}}
8 -These instructions will completely erase the files on computer you are installing to with no chance of recovery. Make sure you have backed up and saved everything you need before you start this process.
9 -
10 -We will also use and erase the USB drive we will use to create the install media. Again, make sure it doesn't contain anything valuable before you start.
11 -{{/warning}}
12 -
13 -1. Start with a 16GB USB drive. This USB will be erased. In our example, the USB is labelled "MyVolume"
14 -1. Download the Catalina installer for 10.15 ( [[https:~~/~~/support.apple.com/en-in/HT201372>>https://support.apple.com/en-in/HT201372]] ) from the apple app store (8GB). After downloading, the OS will try to run the installer and fail giving an error message. Just dismiss the dialog window and continue on.
15 -1. Run "createinstallmedia" via the terminal window to create the installer:
16 -11. ##sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia ~-~-volume /Volumes/MyVolume##
17 -[[image:macos-big-sur-terminal-create-bootable-installer.jpg]]
18 -11. Eject the installer USB
19 -11. Insert the installer USB into the computer and power it on while holding the Option key pressed until the boot selection screen appears:
20 -<screenshot>
21 -11. Select the (working from a VM - look for recovery mode? utilities?)
22 -[[image:Screenshot 2021-11-03 at 17.30.44.png]]
23 -
24 -11. Use the disk utility to erase the Big Sur drive and then exit disk utility
25 -11. Install Catalina as normal.
26 -[[image:Screenshot 2021-11-03 at 17.32.39.png]]
27 -
28 -====== ~[[[top>>doc:WebHome]]] ======
29 -
30 30  == Disable MacBook Pro Dedicated GPU ==
31 31  
32 32  
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48 48  1. Run the program, follow the prompts, and enter your password when prompted.
49 49  1. Once the tool finishes running, your system should now run without the dedicated graphics, and should work completely normally.
50 50  
51 -====== ~[[[top>>doc:WebHome]]] ======
52 -
53 53  == Essential Keyboard Shortcuts for Mac ==
54 54  
55 55  (% class="min" %)
56 56  |=Shortcut|=Action
57 57  |**Startup Shortcuts**|
58 -|C|Boot from Optical Drive
59 59  |D|Boot to Apple Diagnostics
60 60  |N|Boot from a network server
61 61  |T|Boot in Target Disk Mode
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66 66  |Cmd + V|Boot in Verbose Mode
67 67  |Option|Boot to Startup Manager, to pick other startup disks if available
68 68  |Cmd + Option + P + R|Reset NVRAM or PRAM
69 -|Shift + Control + Option|Reset SMC
70 -|F12 or trackpad button|Eject removable media
71 -|Left Shift|Disable automatic login (if enabled)
72 -|Shift|(at login screen) Prevent Login items / Previous Windows
37 +|F12|Eject removable media
73 73  |**Global Shortcuts**|
74 74  |Shift + Cmd + 3|Take screenshot of entire screen
75 75  |Shift + Cmd + 4|Take screenshot of selected area
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126 126  |Cmd + Down|Move down one folder
127 127  |Cmd + Option + I|Show Attributes Inspector
128 128  |Cmd + Control + N|With files selected, create a new folder and immediately move selected files into that folder
129 -
130 -====== ~[[[top>>doc:WebHome]]] ======
131 -
132 -== Xcode Developer Tools ==
133 -
134 -[[https:~~/~~/developer.apple.com/download/all/>>https://developer.apple.com/download/all/]]
135 -
136 -[[https:~~/~~/en.wikipedia.org/wiki/Xcode>>https://en.wikipedia.org/wiki/Xcode]]
137 -
138 -=== 10.12 Sierra ===
139 -
140 -* 9.2
141 -** [[Xcode>>https://download.developer.apple.com/Developer_Tools/Xcode_9.2/Xcode_9.2.xip]]
142 -** [[Xcode Command Line Tools>>https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_macOS_10.12_for_Xcode_9.2/Command_Line_Tools_macOS_10.12_for_Xcode_9.2.dmg]]
143 -
144 -=== 10.15 Catalina ===
145 -
146 -* 11.5
147 -** [[Xcode>>https://download.developer.apple.com/Developer_Tools/Xcode_11.5/Xcode_11.5.xip]]
148 -** [[Xcode Command Line Tools>>https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_for_Xcode_11.5/Command_Line_Tools_for_Xcode_11.5.dmg]]
149 -* 12.3
150 -** [[Xcode>>https://download.developer.apple.com/Developer_Tools/Xcode_12.3/Xcode_12.3.xip]]
151 -** [[Xcode Command Line Tools>>https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_for_Xcode_12.3/Command_Line_Tools_for_Xcode_12.3.dmg]]
152 -* 12.4
153 -** [[Xcode>>https://download.developer.apple.com/Developer_Tools/Xcode_12.4/Xcode_12.4.xip]]
154 -** [[Xcode Command Line Tools>>https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_for_Xcode_12.4/Command_Line_Tools_for_Xcode_12.4.dmg]]
155 -
156 -====== ~[[[top>>doc:WebHome]]] ======
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