How to update macOS when the system thinks the update is already installed

I've been using a 2010 iMac with OS 10.9 for a few years. Now I need to update the OS to 10.13 (the latest one this system supports). Here's the catch: months ago I attempted to install 10.13 on an SD card plugged into the system. The…

Search fi (one character) as fi (two characters) in mdfind

In the pdf below, the two characters f and i is contracted into one character fi as in "significance". So that if I try to search "Brown Adipose Tissue: Function and Physiological Significance" (f and i are two characters) by mdfind, I w…

High memory usage on iMac MacOS Catalina

I'm not a Mac power user by any stretch of the imagination, but I'm hoping for some help from someone here that is. There are similar questions being asked, but the answers seem to all be similar... that the person asking the question …

Search fi (one character) as fi (two characters) in mdfind

In the pdf below, the two characters f and i is contracted into one character fi as in "significance". So that if I try to search "Brown Adipose Tissue: Function and Physiological Significance" (f and i are two characters) by mdfind, I w…

High memory usage on iMac MacOS Catalina

I'm not a Mac power user by any stretch of the imagination, but I'm hoping for some help from someone here that is. There are similar questions being asked, but the answers seem to all be similar... that the person asking the question …

Move a row in excel using the keyboard

In any editor I move lines around with the keyboard frequently. Using the mouse/trackpad is distracting and slow. Can the same be accomplished in Excel and I just missed it?

How do you uninstall .pkg file?

Most apps come packaged in a .dmg file, where once mounted all you have to do is copy the .app, special directory to you Applications folder and that's it. Nice and clean, if you ever want to uninstall the app, you just remove it. Howe…

How to mirror ipad on mac catalina

I have a MacBook Pro with macOS Catalina version 10.15.3 and an iPad mini with iOS 13.3.1. I'd like to mirror the iPad to MacBook Pro. I can extend the iPad using Sidecar but not the other way around. How can I do it?

Very large (out of core) image viewer for Mac?

(Yes, I've seen this question, but what that poster considered "truly massive" is pretty ordinary now.) Can anyone suggest an image viewer on the Mac, OSS or commercial, that is capable of displaying TIFF images in the multi-gigabyte …

youtube-dl in automator action file; video and audio not muxed

I built an AppleScript to run as a Service for Safari. But I am running into a problem where the audio and video aren't being muxed. This doesn't happen when entering the same command into terminal. I have a configuration file for yout…

Very large (out of core) image viewer for Mac?

(Yes, I've seen this question, but what that poster considered "truly massive" is pretty ordinary now.) Can anyone suggest an image viewer on the Mac, OSS or commercial, that is capable of displaying TIFF images in the multi-gigabyte …

Cannot boot Ubuntu on a triple boot system (Catalina, Win10, and Ubuntu 18.4.4)

I am running a 2012 Macbook Air (5,2) with a 1TB SSD installed. I plan on using Mac as my main OS, windows for apps unavailable on mac, and linux for programming. Using the Mac Boot Manager (hold alt while booting up) allows me to boot …

How to resolve Bootcamp failed installation error

I'm getting exactly the same error as this guy: https://m.youtube.com/watch?v=FoKch--3v80. That is, bootcamp could not install Windows files (it occured just after the partitionning was completed). I'm using a Macbook Air 2015 120Gb,…

The Verge – Sonos is getting rid of the controversial Recycle Mode that needlessly bricked its older devices

Search fi (one character) as fi (two characters) in mdfind

In the pdf below, the two characters f and i is contracted into one character fi as in "significance". So that if I try to search "Brown Adipose Tissue: Function and Physiological Significance" (f and i are two characters) by mdfind, I w…

Conversion of a 2011 vintage Unibody Macbook Pro to Linux

I've got a Late 2011 17" MacBook Pro that got as far as High Sierra 10.13.6. My thought was to remove the SSD that's currently installed, replace it with another SSD, then install Linux Mint on this new SSD. I'd like to be able to res…

Checking Certificates Meet Apple Requirements

is there a command or UI I can use to test certificates or diagnose why they aren't valid? A while back Apple changed the requirements for TLS certificates, and announced dates from when those changes would take effect. For example not…

How to Remove Apple ID Payment Method on iPhone & iPad

If you’re an iPhone or iPad user, you probably use some sort of a payment method to make purchases on the App Store and iTunes Store. This could be a credit card, debit card, Apple Pay, PayPal or even Apple ID credit that you get from redeeming gift…

How to mirror ipad on mac catalina

I have a MacBook Pro with macOS Catalina version 10.15.3 and an iPad mini with iOS 13.3.1. I'd like to mirror the iPad to MacBook Pro. I can extend the iPad using Sidecar but not the other way around. How can I do it?

How to move app bundles safely on the command line

I need to copy/move a bunch of macOS apps from some directory locations to another location. I know I can do this safely via the Finder. (By "safely" I mean that the app still starts up and works after copying/moving.) However I would …

Implementing licensing mechanism for Applications Distributed in App store

I have an app that I intend to distribute via the App store. Currently, the user purchases a license from the website, he receives a key via email and our web server validates the license key entered by the user in the application. Is i…