I may have found something here. There have been tons of problems reported about the high speed driver being missing on intel macs. This solution is different and the closest thing I've found. Can someone elaborate on this?
Thanks,
Roman


http://macosx.com/forums/mac-os-x-system-mac-software/291676-external- harddisk-unrecognized.html


"I've just had the exact same problem. Now its solved.

My external harddrive which works on all other macs, windows, linux machines I've ever tried, suddenly decided not to work on this PowerBook G4.

System Profiler found it ok

but dmesg gave me
USBF: 2589. 70 AppleUSBEHCI[0x14ec800]::Found a transaction which hasn't moved in 5 seconds on bus 91, timing out!


i used a special usb cable (comes with some external hd's) with two connectors to get power from a second usb port. and voila, problem solved.

so the problem turned out to be power related, must be enough power for the usb to recognise the device, but not enough to actually use it. need to use the power from two usb ports."

cheers








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