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Hello all I recently installed Tiger on a spare USB HD I had lying around. Everything went smoothly during the install, but I can't get it to boot on USB. BIOS is set to "Boot USB-HDD" first but everytime I try to get it to boot OSX I just get the old "INVALID SYSTEM DISK" error. Its almost like its not even trying. I even changed the jumper on the drive in the enclosure to master and I still get nothing. Is there anything special you have to do to get this thing to accept a USB boot?

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https://www.insanelymac.com/forum/topic/17659-usb-boot-failure/
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