This feature is not available in the Mac App Store version of DaisyDisk.
Sometimes the amount of used
space on a disk may appear greater than the total size of all scanned files and folders on that disk. This is normal. The difference is usually taken by the file system overhead and system stuff like Spotlight index, but in certain cases a significant amount of disk space may be hiding in other users’ accounts or folders that are normally not visible to you. In order to reveal those folders you should scan the disk as administrator.
DaisyDisk is a disk space analyzer to get the visual breakdown of the disk space and come to know about the factors controlling the area of the system. It is a disk analyzer and disk management tool for OS X users to find out the factors that are taking the disk space. In rare cases, a significant amount of disk space may still appear hidden even after scanning as administrator. This may be caused by problems with disk permissions. Try to repair permissions using the system Disk Utility app. According to DaisyDisk I still have 18gb of 'Hidden Space' - I'm not sure if that's safe to delete. In that, there's 1.1gb of 'Purgeable Space' which is described as 'system caches' – KingTim Sep 21 '19 at 18:20.
(hidden space) is a virtual disk map item that only appears when the total size of restricted files is significant, so you can see whether it’s worth rescanning the disk as administrator or not.
Large amounts of hidden disk space may also indicate to file system errors. Follow our troubleshooting guide for details.
In rare cases, a significant amount of disk space may still appear hidden even after scanning as administrator. This may be caused by problems with disk permissions. Try to repair permissions using the system Disk Utility app.
Daisydisk Still Hidden Spaces
Strange hidden space may also be caused by a third-party backup application that created a temporary disk image and then terminated abnormally without cleaning it up. Use ls -la /Volumes/ command in Terminal app to check if this is the case.
DaisyDisk is a handy application that will scan any drive that you have connected to your computer. Once it is finished scanning, it will give you detailed information of where the majority of your storage space is going. It lumps your files into obvious categories so you can see which types of files seem to be taking up the most space. Not only will it scan your computer hard drive, but it will scan flash drives, ftp disks, and even time machine volumes. This is extraordinarily useful because it will give you the ability to have maximum control over all of your disks.
Once DaisyDisk knows whats going on with your drive, it can help you to start cleaning it out. It will be able to show you unusually large files and even allow you to preview them. If you decide that one of these files isn’t needed, DaisyDisk will delete it permanently for you. DaisyDisk makes finding larger files rather easy because the larger the file, the more space it will take up in the graphic.
DaisyDisk’s user interface can unfortunately be confusing at times. When you first use it, all of the information can cause the user to become a little overwhelmed. However, DaisyDisk does indeed get easier to use, I just wish there wasn’t such a learning curve at the beginning. One piece of information that DaisyDisk doesn’t show is the age of the files. This would be extremely useful because you could easily see which files haven’t been used for awhile. This feature would also help you sniff out those lost files that you didn’t even know still existed.
I think that DaisyDisk can be useful to nearly every type of Mac user who is willing to get past the interface. This is because no matter what you use your computer for, it is important to know where your storage space is going. DaisyDisk’s visual representation of the data makes it incredibly easy to understand. Plus, scrolling your mouse over different parts of the picture gives you more detailed information. DaisyDisk is truly a very useful piece of software and can make any Mac user’s life easier. So if you are willing to tinker around with a program for a little bit, then DaisyDisk is for you.
Price: $9.99
Daisydisk Still Hidden Space Program
Version discovered: 2.1.2
Supported OS: OS X 10.6 or later
Daisydisk Still Hidden Spacecraft
Download size: 4mb