My mac showed over 150GB in 'System Storage' and it was all grayed out so you could not clean it up from the Manage Storage screen. I deleted these log files and my System Storage went down to practically nothing. So if you are wondering what is taking up so much room in System Storage, its could easily be these logs. – Jeff Jan 29 at 18:18. Oct 03, 2018 Inside the home folder on your Mac is a Library folder that stores app-specific files and settings, personal settings, and some data. The files and settings in the Library folder should be left. Ever since Lion (OS X 10.7), Apple has hidden your personal Library folder (/Library) by default. In Lion and Mountain Lion (OS X 10.8), you could make the folder visible, but it required some work.
Mail User Guide
Mail can import email messages that have been exported in mbox format from other email apps, and import mailboxes exported from Mail on a Mac. You can export mailboxes in mbox format.
Import mailboxes
In the Mail app on your Mac, choose File > Import Mailboxes.
Select a source in the list, read the information that appears below the list, then click Continue.
If you’re importing a mailbox exported from Mail or a folder in the ~/Library/Mail/V7 folder on another Mac, select Apple Mail. To get to the Mail folder on a Mac, click the desktop to make sure you’re in the Finder, press and hold the Option key, choose Go > Library, then click the Mail folder.
If you’re importing messages from a Windows or UNIX computer, select “Files in mbox format,” then locate the folder containing the files.
Reorganize the imported messages, if you like.
The messages are in a new mailbox called Import in the Mail sidebar. You can drag folders and messages from the Import mailbox to new or existing mailboxes, then delete the Import mailbox.
Export mailboxes
In the Mail app on your Mac, select one or more mailboxes, then choose Mailbox > Export Mailbox.
Choose a folder or create a new folder, then click Choose.
Mail exports the mailboxes as .mbox packages. If you previously exported a mailbox, Mail doesn’t overwrite the existing .mbox file; it creates a new .mbox file, such as My Mailbox 3.mbox.
What are log files and what do they do?
Log files are a journal of system parameters and entries describing everything that takes place on your Mac. Any operation that is being performed at any time is noted down in the form of logs, much like a “black box” on an airplane.
For the most part, logs contain crash reports and app errors. To us, regular users, this information bears no sense because it’s unreadable. But when you need to diagnose a problem, log files are an indispensable invention.
How to delete user log files?
Public Library Location
Why would anyone want to delete user logs on Mac? First, deleting outdated logs may speed up some of your apps. Second, however small they are, logs still take space on your disk. And lastly, outdated logs could potentially cause software conflicts.
User logs are a part of your user profile. They are stored at: ~/Library/Logs
You should know that deleting user logs is not an everyday operation. It may backfire if you don’t know what you’re deleting. But since you asked, here is how it’s done.
We've got two ways to do it: the manual way and the CleanMyMac X way.
How to clear log files on a Mac manually
- Open Finder and select 'Go to Folder' in the Go menu.
- Type in ~/Library/Logs and hit Enter to proceed to this folder (pay attention to the use of “~” — this will ensure that you’re cleaning user log files, not the system log files).
- Optional step: You can highlight & copy everything to a different folder in case anything goes wrong.
- Select all files and press Command+backspace.
- Restart your Mac.
Note: We recommend that you remove the insides of these folders, but not the folders themselves. Also note that some system applications, like Mail, have their own logs stored elsewhere.
Remember, if you want the additional space from cleaning these log files, be sure to empty your Trash. To do this, Control+click on the Trash icon in the dock and select “Empty Trash.”
In addition, some log files can be found in the /var/log folder, but not all the items contained therein are safe to remove. That’s why it is safer to remove log files using a Mac cleaning utility like CleanMyMac X.
How to clear log files with CleanMyMac X
Rather than searching all over your Mac for log files yourself, you can clean up logs with CleanMyMac X in just 4 steps. And that’s not all it does! Anyway, to clean them up with CleanMyMac X:
- Download CleanMyMac X (free version) and launch it.
- Choose System Junkin the left menu.
- Click Scan at the bottom of CleanMyMac X.
- Hit Clean.
Done! If you’d like to remove only log files and nothing else, click on Review Details before clicking Clean. Deselect everything except for System Log Files and User Log Files, and then click Clean.
Make sure that once you have finished clearing out these logs for additional hard drive space, you empty out your Trash. To do this, Control-click on the Trash icon in the dock and select “Empty Trash.” Restart your Mac afterward so your Mac can begin to create new log files.
Is it safe to delete log files?
Many experienced users prefer to clean their user logs as part of their Mac cleaning routine on Mac. Though it doesn’t directly translate into speed, there is some benefit in keeping your disk clean. Some apps have notoriously large log files, especially media apps. For example, writing this article I’ve found a single log file by Elmedia player that weighted 325 MB.
As a word of caution, you shouldn’t delete the entire Logs folder, only delete what’s contained inside. As we have said, log files serve for diagnostic purposes. If your Mac is doing well, there’s nothing particularly harmful in deleting logs.
Cleaning up log files with CleanMyMac X is as easy as can be. And, like we said before, it can do so much more, too! With CleanMyMac X, you can clean up outdated apps, language packs, universal binaries, and gigabytes of useless junk you didn’t even know you had. Download CleanMyMac X now and feel what it’s like to have a faster, cleaner Mac.
