How to consolidate photos from old computers and drives

By Tiago Trindade, maker of FolioSort · Updated 29 October 2026 · 8 min read

Make the list first

Before you plug anything in, write down every place photos might be. It takes ten minutes and it is the difference between one merge and five. A typical list for a family library:

Source	Usually holds
Current computer	Pictures, Desktop, Downloads; on a Mac, often a Photos library
Old laptops and desktops	The years before the current computer — often the only copy
External drives and USB sticks	Backups, half-finished copies, "photos to sort"
Phones and their backups	Recent years; older phones' photos may only exist in a computer folder
Cloud accounts	Google Photos, iCloud, OneDrive, Dropbox — downloaded as an export
Memory cards and old cameras	Photos that were never copied off at all

Getting photos off an old computer

If it still starts

Copy, don't move. Connect an external drive and copy the user's Pictures, Desktop and Downloads folders, plus any folder with a name like Photos or Camera. On Windows they are under C:\Users\name\; on a Mac, in the home folder. If there is more than one user account, repeat for each.

If it doesn't start

The drive almost always outlives the computer. Take it out and connect it to a working computer, where it appears as an external disk:

• Laptop drives from roughly 2008–2016 are 2.5-inch SATA; a USB-to-SATA adapter costs little and needs no tools beyond a screwdriver.
• Newer laptops use small M.2 drives; they need an M.2 enclosure of the right type (NVMe or SATA).
• Very old desktops may have IDE drives, which need an IDE adapter.
• Some recent Macs have storage soldered to the board; those need the Mac to start, or Apple's data-transfer tools.

Where photos hide

• Inside a photo library package. Apple Photos and iPhoto keep photos inside a single .photoslibrary package, not in folders. Open Photos, select everything and use File › Export › Export Unmodified Original to get them out as files.
• In Time Machine and Windows backups. A Mac's Time Machine drive holds dated snapshots of whole folders; a Windows upgrade often leaves a Windows.old folder with the previous user folders inside.
• In old program folders. Picasa, Windows Photo Gallery and camera software often imported into folders of their own inside Pictures, with names like Imported on 2011-06-04.
• Not in phone backups. An iTunes or Finder backup of an iPhone is a database, not a folder of photos; restoring it to a phone is the reliable way to get those photos back.

A Mac and a PC in the same family

The usual story is an iMac in the study and a Windows laptop for work, each with half the photos. Don't keep two libraries in sync — pick one home both can reach:

• An external drive formatted as exFAT, which both Mac and Windows read and write.
• A NAS on the home network, if you have one — see FolioSort on a NAS.

Merge both computers' photos into that home, then stop keeping copies on each machine. FolioSort runs on both platforms and one licence covers a Mac and a PC together, so it does not matter which computer you run the merge on.

Merge in one pass — not by dragging

Dragging folders together in Finder or Explorer fails in two ways. It stacks duplicates: the same holiday from three drives becomes three copies in one folder. And it loses photos: cameras restarted their file counter on every card, so DSC_0001.JPG from 2006 and DSC_0001.JPG from 2009 are different photos with the same name, and one "Replace" erases one of them without a trace.

A proper merge does four things a drag can't:

1. Recognises the same photo across every source — identical files by checksum, and resized or re-saved copies by comparing the images.
2. Keeps the best copy by a rule you can check: a RAW over a JPEG, higher resolution over lower, the original over an "-edited" copy.
3. Warns before two different photos land on the same name, instead of replacing one.
4. Verifies every copy it writes, so nothing is corrupted on the way.

That is what FolioSort's Merge Sources does. You add every drive and folder as a source, it scans them together, shows exact copies and similar photos with a suggested keeper for each, and copies the keepers into one destination library. It deletes nothing by default — redundant copies stay exactly where they were — and writes a report of every keep-and-skip decision.

The duplicates you will find

Expect a lot of them. A library that has been backed up "just in case" for fifteen years commonly holds the same photo two, three or four times. They come in three kinds:

• Exact copies — the same file on several drives. Safe to resolve in one step.
• Near-duplicates — the same photo resized for email, re-saved by Facebook or WhatsApp, or exported after an edit. Worth a quick review, because you want the larger, original one.
• Bursts and near-identical frames — ten shots of the same moment. These are not duplicates; they are a choice, and they belong to culling, not to the merge.

For a duplicate check on a single folder, without merging, see Find Duplicates and the best duplicate photo finders compared.

When it is safe to delete the old copies

Only when all three are true:

1. The merged library exists and you have opened a sample of every year in it.
2. It has a backup on a second drive (and ideally one off site).
3. You have kept the merge report, so you know which copy of what was kept.

Then you can let the old drives go. In FolioSort, the optional last step of a merge moves the now-redundant exact copies to the Trash — confirmed first, and undoable. Next: give the photos that came over without a date their real one — how to date old photos that have no date.

Questions people ask

How do I consolidate photos from multiple drives?

Connect every drive, or copy each one to a single large disk, without moving or deleting anything. Then merge them in one pass with a tool that recognises the same photo on different drives, keeps the best copy of each and copies the keepers into one destination folder. Delete nothing from the old drives until the merged library exists and has its own backup.

How do I get pictures off an old computer's hard drive?

If the computer still starts, copy its Pictures, Desktop and Downloads folders to an external drive. If it does not, take the drive out and connect it to a working computer with a USB-to-SATA adapter, or an NVMe enclosure for newer laptops; it then appears as an external disk. Read a Mac's drive on a Mac and a Windows drive on Windows, because each reads the other's format poorly or not at all.

How do I consolidate photos across an iMac and a Windows PC?

Pick one home for the library that both can reach: an external drive formatted as exFAT, which Mac and Windows both read and write, or a NAS. Merge both computers' photos into that one place, then point both computers at it instead of keeping a copy on each. FolioSort runs on both, and one licence covers Mac and Windows together.

Can you merge all duplicates at once?

Exact duplicates, yes: files that are identical byte for byte can be found with certainty by checksum and resolved in one step. Near-duplicates, such as a resized or re-saved copy of the same photo, should be reviewed, because the right choice is the better copy rather than the first one found. A good merge suggests the keeper and lets you accept all suggestions at once.

Does Windows 11 have a duplicate photo finder?

Not one built into Windows or the Photos app. Microsoft's separate PC Manager app can list duplicate files, but only files that are exactly identical, so a resized or edited copy of the same photo is not found. On a Mac, the Photos app has a Duplicates album, but it only covers photos inside the Photos library, not folders on a drive.

Will merging folders overwrite photos that have the same name?

It can if you drag folders together: old cameras named every photo DSC_0001.JPG and restarted the count, so different photos share names, and answering Replace once destroys one of them. A merge tool should check the plan for files with the same name and different content before it runs, and rename or keep both.