Resetting a Windows password with ntpasswd

Proper Use Case You may encounter situations in which you have forgotten the administrator password on a Windows computer, and you need to reset the password. This tutorial will walk you through how to reset it using an open source tool called ntpasswd. Improper Use Cases If your Windows computer is joined to a domain, […]

How many times do you have to write zeros or random data to a drive to securely delete data?

Conventional wisdom says that you need to do many passes of zeros, ones, combination of zeros/ones, and then random numbers in order to securely erase a drive so that its data cannot be recovered. But is this true? The folks at HowToGeek make a good case for one pass of zeros being enough: HTG Explains: […]

Fix for disk erase failed couldn’t unmount disk

If you're trying on a Mac using Disk Utility to erase a hard drive and it won't unmount, giving you an error similar to Disk erase failed. Couldn't unmount disk, then you may have to force an unmount through the terminal. Launch up (through /Applications/Utilities or through a Spotlight search). Then paste in the […]

Running sudo commands in Automator

If you're wondering how to run sudo (for privilege escalation) commands in Automator, this is one way to do it. Launch up Automator (of course). Find Run AppleScript in the library of actions. Then, drag it over to the workflow area on the right. By default, Automator will put in some script structure for you […]

Fix ownership of copied folders for Active Directory Macs

Warning This script does some serious system modifications. If you don't know what you're doing, ask questions in the comments. Don't just run this script if you don't understand what it does or how it's doing it. This also assumes short usernames match up with user folder names, which they usually do. What issue this […]

Authentication failed on changing admin accounts for ARD machine

I encountered an odd thing. I had ARD set to remote into a few workstations. I was doing some account cleanup on them and changed the admin accounts. In System Preferences Sharing, I still had it that all admins could remote in, but after deleting an admin account and adding a new one, I couldn't […]

Reset Printing System on Mac

If you're having printing issues with multiple printers (not just one or two), you may want to reset the printing system (Warning: this will remove your installed printers, and you'll have to install them again). Go to System Preferences. Select Printers & Scanners. Right-click on a printer and then select Reset printing system.... Re-add the […]