How do you run a Serato library from an external drive?

Get the format right first

Format is the decision that quietly causes most external-drive problems. macOS can fully read and write APFS and Mac OS Extended, and both Mac and PC can use exFAT, which is the right choice if the drive travels between the two. What you must avoid is NTFS: a Mac can read it but not write to it without third-party software, so Serato cannot save analysis, cues or beatgrids, and it looks like a bug when it is really the format. Formatting erases the drive, so do it before you copy any music over. A drive that travels between machines is also the simplest way to run one library on two computers, because Serato stores the tracks on it relative to the drive itself; the other options are in keeping a Serato library in sync across two computers.

Portable library vs backup drive

Be clear which one you are building. A portable library means your music lives on the drive and you play from it on any machine; Serato writes a _Serato_ folder onto the drive itself so the crate and cue data for those tracks travels with the music. A backup drive is just a copy you keep for safety and do not play from. The mechanics of copying the library over are the same as backing up your Serato library and moving it to a new machine.

Why external tracks go orange, and how to prevent it

The information for files on an external drive is stored on that drive. So the two rules that keep tracks from turning orange are simple. First, connect the drive before you launch Serato; open Serato without it and those tracks cannot be found and show as missing. Second, never rename files or folders on the drive, because crates point at exact paths. If tracks have already gone orange, relink them with how to fix missing files in Serato.

Cues and analysis need a writable drive

Because Serato writes cue points and analysis back to the files, an external drive has to be writable for those to save. On a read-only or NTFS-formatted drive the writes fail quietly, which is a frequent cause of cues and analysis not sticking. If that is happening to you, see Serato cue points not saving and Serato won’t analyze files, both of which trace back to drive permissions. If Serato says the library on the drive failed to open, see Serato library failed to open.

SSD, and always a second copy

Use an SSD if you can: it loads tracks faster, browses a large library more smoothly, and has no moving parts to fail in a gig bag. Whatever the drive, keep a second copy of the _Serato_ folder and your music elsewhere, because a single drive is a single point of failure. Crate Cleaner works on your real Serato library, including one on an external drive, and flags missing files, duplicates and unreadable tracks so a portable library stays healthy on the move. It runs locally on macOS with a free plan and no card required. If a drive's tracks do turn orange, Library Repair relinks them.

Try Crate Cleaner free → · See pricing →

FAQ

What format should a Serato external drive be? APFS or Mac OS Extended for Mac-only use, or exFAT if the drive also goes into a PC. Do not use NTFS, because macOS cannot write to it without third-party software, which blocks Serato from saving analysis and cues.

Why are my external tracks orange when the drive is unplugged? Because the files live on the drive. When it is disconnected Serato cannot find them, so they show as missing. Reconnect the drive before launching Serato and they return.

Can cue points and analysis save on an external drive? Yes, as long as the drive is writable and Mac-formatted. On a read-only or NTFS drive the writes fail silently, which is a common cause of cues and analysis not sticking.

Should I use an SSD or a hard drive? An SSD. It is faster to load tracks and browse a big library, and it has no moving parts to fail in a gig bag. A spinning hard drive works but is slower and more fragile in transit.