If you get an error when moving Photos Library
Select your external storage device in the Finder, then choose File > Get Info.
If the information under Sharing & Permissions isn’t visible, click the triangle to see more.
External Drive Info window with “Ignore ownership on this volume” selected
Make sure that the “Ignore ownership on this volume” checkbox is selected. To change it, you might first have to click the lock button to unlock the setting. If the storage device isn’t formatted correctly for Mac, or was used for Time Machine backups but hasn’t been erased, this checkbox won’t be present or won’t be selectable after unlocking. In that case, erase the storage device first.
If you have some other permissions issue with your library, you might be able to resolve the issue with the Photos Library repair tool.
SOLVED macOS High Sierra to Mojave Install Fail
An Error occurred while preparing the installation. Try running this application again".
Thanks for sharing issue solved!
oh Thanks @mehwish for help!
I wondering on Google. I’m trying that way to solve the issue.
oh dear it was very bad xp for me when i was start to using MacOS, My 1st Mac Book Pro already Installed then i decided to move on Mojave, I think so that i need to reinstall the OS and all data will be loss, but i take a backup to external device and i started to download as following steps, Please follow
- Sign in icloud before download Mojave (Important)
- Then Download Mojave almost 5.9 GB File.
- You Disk space should be free at least 12GB.
- Install after Download without losing Data.