{"id":34789,"date":"2026-05-21T00:21:23","date_gmt":"2026-05-21T07:21:23","guid":{"rendered":"http:\/\/www.intego.com\/mac-security-blog\/?p=34789"},"modified":"2026-05-21T02:53:25","modified_gmt":"2026-05-21T09:53:25","slug":"setting-up-a-new-mac-should-you-migrate-or-do-a-clean-installation","status":"publish","type":"post","link":"https:\/\/www.intego.com\/mac-security-blog\/setting-up-a-new-mac-should-you-migrate-or-do-a-clean-installation\/","title":{"rendered":"How to set up a new Mac: transfer everything or start fresh?"},"content":{"rendered":"

\"Migration
\nFor most people, Migration Assistant is the fastest and easiest way to set up a new Mac because it moves your user accounts, files, apps, and settings in one process. The trade-off is that it can also bring across old clutter, app leftovers, and software issues from the old setup.<\/p>\n

A clean install takes longer, but it gives you more control over what ends up on your new Mac. It can be a better option if your current Mac is sluggish, cluttered, or full of apps and files you no longer use.<\/p>\n

Should you use Migration Assistant or start fresh?<\/strong> Use Migration Assistant if your old Mac is working well and you want the easiest move to a new Mac. Choose a clean install if you want a cleaner setup and don\u2019t mind reinstalling apps and moving files manually. Either way, back up your old Mac first and clear out anything you don\u2019t want to carry over.<\/p>\n

What is Migration Assistant on Mac?<\/h2>\n
\n

Migration Assistant is Apple\u2019s built-in macOS tool for moving information from an old Mac, a Time Machine backup, another startup disk, or a Windows PC to a new Mac. It can transfer user accounts, documents, apps, and settings without erasing the original device or backup.<\/p>\n

You can use Migration Assistant during new Mac setup or open it later from Applications > Utilities if you\u2019ve already started using your Mac.<\/p>\n<\/div>\n

What does Migration Assistant transfer?<\/h2>\n

Migration Assistant transfers most files, apps, accounts, and settings, but some apps or preferences may need extra setup afterward \u2014 especially if your new Mac is running a newer version of macOS.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Data type<\/strong><\/td>\nDoes Migration Assistant transfer it?<\/strong><\/td>\nWhat to know<\/strong><\/td>\n<\/tr>\n
User accounts<\/td>\nYes<\/td>\nYou can choose which specific accounts to move.<\/td>\n<\/tr>\n
Documents and folders<\/td>\nYes<\/td>\nThis includes the files kept in your standard folders, like Documents, Desktop, and Downloads.<\/td>\n<\/tr>\n
Apps<\/td>\nUsually<\/td>\nMost software moves over, but you may need to reinstall some apps or re-enter a license key.<\/td>\n<\/tr>\n
App data and settings<\/td>\nOften<\/td>\nMost of your personal preferences stay the same, though an app might reset if it isn’t fully compatible with the new version of macOS.<\/td>\n<\/tr>\n
System and network settings<\/td>\nYes<\/td>\nSome system preferences transfer as well, including Wi-Fi settings and desktop appearance.<\/td>\n<\/tr>\n
Passwords and keychains<\/td>\nOften<\/td>\nPasswords stored in iCloud Keychain may sync after you sign in to iCloud, but some apps and websites may still ask you to sign in again.<\/td>\n<\/tr>\n
Photos, music, and media libraries<\/td>\nYes, if stored locally<\/td>\nMusic and photos stored on your hard drive will move. Anything stored in the cloud will usually sync once you sign in.<\/td>\n<\/tr>\n
Old clutter<\/td>\nYes<\/td>\nIt can transfer old downloads, unused files, and leftovers from apps you previously removed.<\/td>\n<\/tr>\n
macOS itself<\/td>\nNo<\/td>\nMigration Assistant doesn’t change the version of macOS installed on your new Mac.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Does Migration Assistant transfer everything?<\/h2>\n

No, not always. Migration Assistant transfers a lot of data, but some apps or settings may need extra setup once they\u2019re on your new Mac. You might find that an older app does not run properly, or that a program asks you to enter your password or serial number again.<\/p>\n

However, things like shared calendars or saved notes may appear automatically once you sign into iCloud since they\u2019re stored online rather than only on your hard drive.<\/p>\n

Migration Assistant can also transfer files that you no longer use, like the files apps leave behind after uninstalling. The software is designed to move your data as it is, so it won\u2019t clean up old files or organize your Mac for you.<\/p>\n

If you have a lot of files and apps you no longer use, taking time to clean up your old Mac<\/a> before migrating can help your new Mac feel much lighter and more organized from day one.<\/p>\n

Migration Assistant vs clean install: decision checklist<\/h2>\n

For most people, Migration Assistant is the better option if you want to be up and running quickly with most of your files, accounts, apps, and settings already in place. A clean install, while more work, makes it easier to leave behind the clutter that might be slowing your old Mac down.<\/p>\n

Here\u2019s a simple breakdown to help you decide:<\/p>\n\n\n\n\n\n\n\n\n
Use Migration Assistant if…<\/strong><\/td>\nDo a clean install if…<\/strong><\/td>\n<\/tr>\n
You want the fastest possible setup.<\/td>\nYour current Mac is cluttered or slower than it used to be.<\/td>\n<\/tr>\n
You want your accounts, files, apps, and settings moved together.<\/td>\nYou want to reinstall only the apps you actually use.<\/td>\n<\/tr>\n
Your old Mac is currently working well.<\/td>\nYou think old apps or settings may be slowing your computer down.<\/td>\n<\/tr>\n
You’ve recently organized your files and removed what you don’t need.<\/td>\nYou’ve gathered years of files and downloads you no longer recognize.<\/td>\n<\/tr>\n
You want the migration process to be as simple as possible.<\/td>\nYou’re comfortable taking an afternoon to get your new Mac feeling just right.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

In summary, if your old Mac is working well, letting Migration Assistant handle the move is perfectly fine. But if you\u2019re hoping to escape old glitches or a crowded hard drive, starting from scratch can help your new Mac feel cleaner and easier to manage from the start.<\/p>\n

What to do before using Migration Assistant<\/h2>\n

Migration Assistant can transfer a lot of data quickly, but it will not organize your files, remove old clutter, or decide what is still useful. Here\u2019s a checklist of things to do before you start:<\/p>\n