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web/content/notes/drafts/macOS.md
2025-02-17 09:38:44 +00:00

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---
Status: In progress
Created by: Trude EH
tags:
- notes
- os
author: TrudeEH
draft: true
searchHidden: false
showToc: true
title: 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: <br> <br>`defaults write com.apple.dock autohide-delay -float 0; defaults write com.apple.dock autohide-time-modifier -int 0;killall Dock` <br> <br>Restore defaults: <br> <br>`defaults delete com.apple.Dock autohide-delay; killall Dock`|
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### Gaming
|Issue / Error / Description|Fix|
|---|---|
|Improve Terraria performance (and some other games)|Add `/gldevice:Vulkan` as a launch argument (on Steam).|
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### 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`