Check the actual format
Compare your drive with the selected players below. Newer-player support for exFAT does not make it compatible with older decks. Firmware coverage can also differ.
THE PRE-GIG CHECK
Good music.
Ready USB.
Know what’s on your drive before you step into the booth.
Check your files against the players waiting for you.
↳ Built for the moment before the first track.
Your preflight
01 / CONNECT → 02 / SELECT → 03 / CHECKUSB READINESS REPORT
◎
A little certainty.
Before a big night.
Select your USB folder or load the sample.
We’ll help you spot the things that could interrupt your set.
01 File inventory02 Player compatibility03 Next steps
◉ BROWSER CHECKReadiness signals, never a playback guarantee.
Player & firmware coverage
Manufacturer manuals and release histories, with links you can inspect. “Listed release” means documented, not tested on a physical player. Unlisted versions stay unknown.
THE OTHER HALF OF USB READINESS
Right files. Right drive.
The browser can read your selected files and legacy export records. It cannot see your USB’s filesystem, partition table, or controller. Use this guide to check the settings on your laptop.
Look beneath the volume
The partition scheme is separate from FAT32 or exFAT. The CDJ-3000 support page explicitly excludes GUID/GPT. Other unreviewed schemes remain unknown.
Export for the booth
Device Library and OneLibrary are different exports. Copying music files alone does not build a rekordbox library. The scan checks legacy records and their referenced files; OneLibrary content validation is still pending.
Optional local drive inspection
Download the read-only Python tool and run it against the USB root. It queries your OS for filesystem and partition layout, then binds the report to file names and sizes. It does not format, repair, test hardware health or start a service.
Download drive inspector (Python 3.9+) ↓python3 inspect_drive.py "/Volumes/YOUR_USB" --output ~/Desktop/usbgood-drive.json
On Linux use the USB mount path; on Windows use py inspect_drive.py E:\ --output usbgood-drive.json. Save the report on your laptop, outside the USB. Reports expire after 24 hours. Linux vfat may leave the FAT variant unknown.
No drive report imported.
Matching names and sizes cannot establish unique physical identity or file contents. Imported reports are local evidence, not signed attestations.
Your settings Optional · user-reported
These choices are recorded in your report. They never count as an automatically measured pass.
How to look it up
macOS
Open Disk Utility, choose View → Show All Devices, and select the USB volume for its format. Select the parent physical disk and open Info to inspect its partition scheme. Reading this information does not erase the drive.
Apple: disk information ↗Windows
Open the USB drive’s Properties in File Explorer to read the filesystem. For partition style, open Disk Management, find the correct physical USB disk, and check Properties → Volumes. Alternatively, PowerShell Get-Volume and Get-Disk display volume and disk information.
Back up your library before changing format or partitioning; those operations can erase data. This app makes no changes to your USB.
Requirements for your selected players
For firmware updates, follow the player’s update instructions separately; update-media requirements can differ from playback-media requirements.
SMALL HUMAN. BIG RUNNING COSTS.
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