![]() So there was actually about 52 GiB used for the local snapshots. If the Finder had reported in GiB, it would've said Capacity: 232.96 GiB, Available: 166.41 GiB, Used: 66.55 GiB. ![]() Uses USB 3.0 for ultrafast data transfer and works with USB 2.0 ports on older machines. Black portable drive features 5TB storage capacity compatible with most Windows and macOS systems. ![]() df is using Gibibytes (=1,073,741,824 bytes), while the Finder is using Gigabytes (=1,000,000,000 bytes). Seagate Expansion 5TB USB 3.0 External Hard Drive, Black (STKM5000400) Item : 24493049. If you want to disable this feature, you can use the Terminal command sudo tmutil disablelocal - but I recommend leaving it enabled, as it does provide some useful protection against accidental deletion/file damage/etc when your real backup is not available.ĮDIT: As pointed out, there's an additional source of confusion: df and the Finder are using different units to report the sizes. If it's around 47GB, this is the source of the difference. To find out if this is what's going on, take a look in System Information: From the Apple Menu, choose "About This Mac", then click "More Info", then select the Storage tab, and look for a light purple ("Backups") band on the usage chart. For example, to perform a secure erase with 35 passes on free space on a drive named Macintosh HD you could use the following command string: diskutil secureErase freespace 3 '/Volumes/Macintosh HD'. du, on the other hand, sees them as used space (as do Disk Utility and System Information). If the drive in question has a space in the name, you should place it in quotes or escape it with backslashes. Local snapshots are automatically deleted when the space is needed for something else (actually, it starts purging them when the volume reaches 80% full), so the Finder treats them as free space. ![]() The developer’s website and the app both have an attractive appearance that makes viewing the data on your Mac hard drive a fun one. I really like DaisyDisk and it stands out to me due to the level of polish that has been added to it. Do you have Time Machine backups turned on? If so, the difference may be due to space used for "local snapshots" (essentially, backups to the local disk when your real backup disk is not available). Method 4: Freeing Up Space Using DaisyDisk DaisyDisk allows you to see what’s taking up space on your Mac. ![]()
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