![]() If none of that stuff works, you can boot into a MacOS recovery mode and just reinstall your system files, without altering anything else. It might access and report your file system in a different way than the others. Try running Grand Perspective - it's my go-to utility of this type, and it's free (or $1.99 from the App Store). It's not clear whether you've actually purged it yet or have only identified it as purgeable - but that's where I'd focus for now.Īs another option - I know you've already used Daisy Disk and Disk Inventory X, and neither one has given you the information you need. I suspect that that "purgeable" data covers almost all of that extra space. I've got an MBP that's been incrementally upgraded through like four versions of MacOS. Don't know why it would have assigned them to the System folder, but I've seen weirder things before.ġ68gb is still crazy-large, though. ![]() Random errors can lead the file system allocating chunks of storage that aren't associated with any file. Yes, Disk Utility would've been my first recommendation. Don’t go crazy with excluding if you don’t know what things are because they could be important and won’t be recoverable if you don’t back them up and then erase your SSD, which is a good performance boosting tip. Once you have a sense of where your storage is at, you can either proceed with Time Machine, or first go into Time Machine settings and exclude specific folders (as an example, old versions of Chrome have sometimes taken up a ton of space for me, as have old iOS backups and iOS installers, called IPSWs). If you have a bunch the same size, hover over them to see if they’re duplicates. ![]() It will visually show you all the files on your SSD bigger blocks indicate bigger files. I would stop the initial backup and run a scan of your SSD with the excellent and free GrandPerspective. I still have a Mac on High Sierra, no issues. That said I used Sierra and High Sierra for years and never heard of a “storage duplication bug” let alone experienced it. Ok so if someone told you an initial Time Machine backup would take ten minutes that‘s just laughably wrong and I would ignore anything else they said.
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