Tips & Guides
A clear, step-by-step guide to moving your files, photos, and settings to a new computer safely, without losing anything or leaving data behind.
The reliable way to move to a new computer is a two-track approach: sync your personal files through a cloud account or copy them to an external SSD, and reinstall your applications fresh instead of dragging them across. Everything else — logins, settings, and two-factor codes — is a short checklist you work through once, not a single magic "restore" button. Get those two tracks right and the whole job takes an afternoon, not a weekend.
Your personal files nearly all live under one folder. On Windows that is C:\Users\[your name], holding Desktop, Documents, Downloads, Pictures, Music, and Videos. On macOS it is /Users/[your name] with the same layout. Copy those and you have caught 90% of what matters.
The other 10% is the stuff that hides. Outlook stores email archives in .pst and .ost files (usually under Documents\Outlook Files). Many games keep saves in %APPDATA% (paste that into the address bar to jump there), in Documents\My Games, or in a Saved Games folder. Browser bookmarks and passwords sit inside a hidden profile folder — though you should sync those through your browser account rather than copying files, which is covered below.
Just as important is what to leave behind. Do not copy C:\Program Files, the Windows folder, or AppData\Local\Temp. Installed programs will not run from a copied folder, and system files are specific to the old machine. Before you start, right-click your key folders and choose Properties (Windows) or Get Info (Mac) to see the total size — that number decides your transfer method.
If your data is under roughly 50 GB, or you have fast fibre, cloud sync is the cleanest option. Upload from the old machine, sign into the same account on the new one, and let the files download into place — you keep an online backup for free. Watch the free tiers, though: OneDrive gives 5 GB, iCloud 5 GB, Dropbox 2 GB, and Google Drive 15 GB shared across Gmail and Photos. A Microsoft 365 subscription lifts OneDrive to 1 TB, which comfortably covers most people.
For a big photo and video library, a drive is faster and does not touch your internet. Speed depends entirely on the connection. A USB 2.0 stick moves around 35 MB/s, so 256 GB takes roughly two hours. A USB 3.2 Gen 1 (5 Gbps) portable hard drive runs about 100-120 MB/s; an external SSD over USB 3.2 Gen 2 (10 Gbps) hits 500-1000 MB/s, clearing that same 256 GB in under ten minutes. An SSD is worth it if you are moving more than a few dozen gigabytes.
Whatever you use, copy rather than cut, so the originals stay on the old machine until you have confirmed everything arrived.
Both systems include tools that carry files, accounts, and some settings in one pass — but only between two machines of the same type.
This is the step people get wrong most. Programs write entries into the Windows Registry, drop shared DLLs into system folders, and register background services during installation. Copy the folder from Program Files and you get "missing DLL" errors or an app that simply will not launch.
Instead, list the software you genuinely use and install each one fresh from its official site, the Microsoft Store, or the Mac App Store. You get the current version, free of years of accumulated glitches, and you quietly drop the apps you forgot you had.
Before wiping the old machine, deauthorize licensed software on it — most paid apps cap how many computers you can activate:
Dig out any licence keys or account logins now, and keep that list beside you as you set up the new PC.
Files are only half of feeling at home. The other half is the sign-ins and small preferences.
Install your password manager first. Bitwarden, 1Password, or the like holds the keys to everything else, so it makes every other login painless. Then sign into your browser — Chrome (open chrome://settings and turn on Sync), Edge, or a Firefox account — to pull bookmarks, saved passwords, extensions, and history across without touching a file.
The genuine trap is two-factor authentication. As you sign into accounts on the new computer, many will demand a 2FA code, so keep your authenticator device within reach. Critically, do not reset or wipe any phone or device that runs Google Authenticator, Microsoft Authenticator, or Authy until you have confirmed every account works from the new setup — those codes can be tied to that one device, and losing them locks you out.
Finally, reconnect the fiddly bits people forget: Wi-Fi passwords, printers, mapped network drives, email accounts (confirm the full mailbox has synced, not just the last week), and email signatures.
Do not wipe the old computer straight away. Keep it for one to two weeks and actually work on the new one — open documents, scroll your photo library, send an email, print a page. That is when you find the one folder you missed, and grabbing it from a live machine on your desk beats any recovery attempt.
Once you are confident, sign out of your accounts (Apple ID and Find My on a Mac; your Microsoft account on a PC) and erase properly:
A spinning hard drive needs that full data-cleaning pass; an SSD relies on encryption plus the reset, so leaving BitLocker or FileVault on beforehand is what really keeps deleted data unrecoverable.
Not with a single tool. Move files through the cloud or an external drive formatted as exFAT, which both systems read and write. Avoid NTFS (Mac can only read it) and APFS or HFS+ (Windows cannot read them natively). Then reinstall your apps fresh on the Mac.
Files are the variable part. Over cloud sync, a 30 GB folder on a 100 Mbps connection is a few hours each way; over an external SSD it is minutes. Reinstalling apps and reconnecting logins usually adds one to two hours of hands-on time.
Almost never. Deauthorize the app on the old machine, then sign in on the new one and most licences reactivate automatically. Keep your keys and account logins handy for anything that asks you to re-enter them.
Hidden application data. Browser profiles (if you did not turn on sync), Outlook .pst archives, game saves in %APPDATA% or Documents\My Games, and authenticator-based 2FA are the four that most often get left behind.
Kai tests far too many apps so you don't have to, and writes about the few that are genuinely worth your time and storage. A reformed app-hoarder, he's practical about features, privacy, and the difference between useful and merely shiny.
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