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Still waiting for root device -- USBF error; HP Envy 6t


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#1
Ibanezbass

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So I've now tried Lion and ML. ML gives me a USBF error that says the EHCI cannot take control from the BIOS. Then I get the infamous "Still waiting for root device".
My hardware:
HP Envy 6t-1000
Core i5 2467m
HD 3000 + Radeon HD 7670m
6 GB DDR3 1600 (@1333)
2 USB 3.0 + 1 USB 2.0

What I've tried:
Flags:
cpus=1 (required; kernel panic without)
GraphicsEnabler=no (required; freezes without)
-f
both npci
All PCIRootUID options
UseKernelCache=no
USBBusFix=yes

Tried a different IOUSBFamily/IOPCIFamily
Tried to unplug and replug the Flash Drive.

Out of ideas... Anyone have an idea?
Thanks

PS. I have NO changable bios options. I am using the USB 2.0 port.

Edit: Seems that I can use the arch=i386 in the Lion installer to get it to load. So, why am I not loading the USB kext in 64 bit arch?

#2
Pillendreher

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Did you try all USB 2.0 ports? On my Lenovo L530, only the very first USB 2.0 port did its job; on every other 2.0 port, I got the "still waiting for root device" message

#3
marsuss

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Open terminal and type;

cp -pr /Volumes/USBNAME/System/Library/Extensions/*ATA* /Volumes/MLPARTITIONNAME/System/Library/Extensions/.
chown -R root:wheel /Volumes/
MLPARTITIONNAME/System/Library/Extensions/*ATA*
chmod -R 755 /Volumes/
MLPARTITIONNAME/System/Library/Extensions/*ATA*

Restart with -f

#4
Pillendreher

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How can you do that when you can't enter the installation utility? As far as I'm concerned, I couldn't open terminal because the still waiting for root device message appeared before the partitions could be "loaded" and therefore before the installation utility could star.





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