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Hi. I've just finished migrating my files and data to my new iMac. Just checked the storage in my HD and found "other" occupies 732GB. Why and what have I done wrong? Can I correct it? I've checked the library but there is nothing abnormal there.
The Other category is a potpourri of files which include:
• System temporary files
• macOS system folders
• Archives and disk images (.zip, .iso, etc. - often found in the Downloads folder)
• Personal user data
• Files from the user’s library (Application Support, iCloud files, screensavers, etc.)
• Cache files
• Fonts, plugins, extensions
• Other files that are not recognized by a Spotlight search
• Media files that cannot be classified by Spotlight as a media file because they are located inside of a package
and not a district grouping.
They can be located anywhere on your hard drive. As already suggested you can use either of these two free apps, GrandPerspective or OmniDiscSweeper, to find the largest files on your drive so you can determine if they can be deleted or moved to an external HD for storage.
The Other category is a potpourri of files which include:
• System temporary files
• macOS system folders
• Archives and disk images (.zip, .iso, etc. - often found in the Downloads folder)
• Personal user data
• Files from the user’s library (Application Support, iCloud files, screensavers, etc.)
• Cache files
• Fonts, plugins, extensions
• Other files that are not recognized by a Spotlight search
• Media files that cannot be classified by Spotlight as a media file because they are located inside of a package
and not a district grouping.
They can be located anywhere on your hard drive. As already suggested you can use either of these two free apps, GrandPerspective or OmniDiscSweeper, to find the largest files on your drive so you can determine if they can be deleted or moved to an external HD for storage.
We cannot trust the Storage report as to where the usage really is, 3 suggestions…
Have you emptied the trash lately?
OmniDiskSweeper shows you the files on your drive, largest to smallest, and lets you quickly Trash or open them.
https://www.omnigroup.com/more/
Purging local backups
Please note that although this doesn't affect your remote backup from Time Machine, this will get rid of the redundancy (at least until the next Time Machine backup) that a local backup disk will provide. If you need such redundancy or are worried about the recovery of your data then you would be best served to let macOS determine when to purge these files.
Start Terminal from spotlight.
At the terminal type tmutil listlocalsnapshotdates.
Hit enter.
Here, you'll now see a list of all of the locally stored Time Machine backup snapshots stored on your disk.
Next you can remove the snapshots based on their date. I prefer to delete them one at at time. Once my "System" disk usage is at an acceptable level, I stop deleting but you can delete all of them if you want to reclaim all of the disk space.
Back at the terminal, type tmutil deletelocalsnapshots YYYY-MM-DD-HHMMSS , where will be one of the dates from your backup. This will be in the form of xxx-yy-zz-abcdef. Try to start with the oldest snapshot.
Hit enter.
Repeat for as many snapshot dates as required
http://www.thagomizer.com/blog/2018/03/27/cleaning-up-time-machine-local-snapshots.html
You can ignore the graphic that says "other", it is famously inaccurate so you can just disregard.
Very many thanks for this. There is a close correlation to the size of "other" and the size of my photo library I moved across. This could be the answer.
"Other"
