web/content/notes/drafts/macOS.md

Status, Created by, tags, author, draft, searchHidden, showToc, title

Status	Created by	tags	author	draft	searchHidden	showToc	title
In progress	Trude EH	notes os	TrudeEH	true	false	true	macOS

#todo

System Data

System data is anything in the following locations:

• /Library
• /System
• ~Library
• /usr
• .hidden_files

Memory

• Physical Memory - Total system memory
• Memory Used
  • App Memory - Memory used for apps
  • Wired Memory - System memory
  • Compressed - Memory used by apps, but compressed as it is not immediately needed
• Cached Files - Files saved in memory for faster launching
• Swap Used - Memory stored in the SSD

Memory Pressure

A measurement of how well macOS is managing the available memory.

• Green/Low: Normal function; No tricks needed.
• Yellow/Medium: There is not enough memory as-is, so macOS is actively compressing and decompressing memory as needed.
• Red/High: Aside from compression, macOS is using the swap heavily.

Troubleshooting

System and Apps

Description	Fix
Fix "App X is damaged and can't be opened."	xattr -c <path/to/application.app>
Disable the Dock autohide delay	Fix: defaults write com.apple.dock autohide-delay -float 0; defaults write com.apple.dock autohide-time-modifier -int 0;killall Dock Restore defaults: defaults delete com.apple.Dock autohide-delay; killall Dock

Gaming

Issue / Error / Description	Fix
Improve Terraria performance (and some other games)	Add /gldevice:Vulkan as a launch argument (on Steam).

Flash IMG File to Disk

1. diskutil list → Find the path to the device (/dev/XXX)
2. diskutil unmount /dev/XXX → Unmount the disk
3. sudo dd if=image.img of=/dev/XXX bs=1M oflag=direct,sync status=progress