Your usb is probably fat32 which has a 4gb limit, go into disk utility and format the usb drive to exFAT.
@Gewürzt started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Your usb is probably fat32 which has a 4gb limit, go into disk utility and format the usb drive to exFAT.