This is the info window of this folder we can see its

Info icon This preview shows pages 45–46. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the info window of this folder. We can see it's 2.8 megabytes in size, and it contains four items in the folder. Let's open the folder and see the files. We can view the info on each file in the same way. So, this particular file is 2.7 megabytes. If we were looking to free up space on the system, we would probably start with each user's home directory. Let's go there. Home directories are where each user stores all their files, including photos, videos, music files, and so on. So it's possible for these directories to get really big, really fast. Let's see the size of our user's home directory. We can see the directory is just over 300 megabytes. This isn't very big, but we could probably reduce the size a bit. If we needed to, we could go through this directory and delete files we don't need anymore. Now, going folder by folder, file by file, to identify disk usage can be a bit tedious. Luckily, we can use another utility to see a higher level overview of disk usage. To do this, we use Disk Utility. Viewing Disk Usage in Disk Utility 1:57-2:41 Disk Utility provides us with a lot of different information about the installed storage disks in the system, including the name, size, and types of files that are on the disk. For example, this disk is named Macintosh HD. Here's its size. And below that we can see the different categories of files that are on this disk. This right here can be very useful. For example, let's say this hard drive was 90% full, and we wanted to see where we could delete files. And let's say Disk Utility showed us that movies or audio was taking up the majority of disk space. These files are probably really easy to transfer to another drive or to delete. So, we could free up space relatively easily. However, if the majority of space was used by apps, it might take more time to see which apps are necessary, and which can be removed. Running First Aid on a Disk 2:42-3:33 In addition to viewing disk usage, Disk Utility can also be used to repair hard drives. To do this, we use the First Aid utility up here. But, I want to point something out about this. To be 100% effective, always run the First Aid utility by booting into recovery mode. The reason for this is that when the operating system is running, some system files can't be repaired or checked,because they're in use or protected. By running first aid in recovery mode, we can be sure that the entire disk has been verified and checked by the utility, and that all files can be repaired. For our purposes, let's run a quick First Aid on our disk. We can click Show Details to see informationabout the scan. The scan has finished, and it looks like there are no errors. Click Done. First Aid is a good way to optimize a disk, by making sure the file system itself is in good health and that file permissions are properly set.
Image of page 45

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 46
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern