USBMSC Identifier (non-unique)

[Nyctalopia]

After weeks of error-free use my hack won't boot anymore and it's getting stuck on "USBMSC Identifier (non-unique)", i've tried Graphics enabler boot flags, -x -s -f, nothing seems to work, i'm booting from USB using clover bootloader, i removed all my USBs and left barely anything connected, i can't pin this down, the error also happens when i restore my time machine back up so all of my data is useless until i find a way to bypass this. Any help?

 

[Nyctalopia]

Just a follow up if people go through same issue, apparently enabling trim is the reason, i'll have to live without it, something about disabling the new kext signing security that messes everything up.

 

[P1LGRIM]

Just a follow up if people go through same issue, apparently enabling trim is the reason, i'll have to live without it, something about disabling the new kext signing security that messes everything up.

I use Chameleon SSD Optimizer, it's free and it works fine with Yosemite and Clover - Link.

make sure you have selected kext-dev-mode=1 in Clover Boot options.

Good Luck

 

[Nyctalopia]

I use Chameleon SSD Optimizer, it's free and it works fine with Yosemite and Clover - Link.

make sure you have selected kext-dev-mode=1 in Clover Boot options.

Good Luck

Thanks for the reply.
I did try Chameleon SSD Optomizer but it asks for disabling kext signing, i select yes, reboot try to enable trim and it asks for disabling kext signing again and again.

 

[P1LGRIM]

Thanks for the reply.
I did try Chameleon SSD Optomizer but it asks for disabling kext signing, i select yes, reboot try to enable trim and it asks for disabling kext signing again and again.

That's why you have to use kext-dev-mode=1

Good Luck

 

[Nyctalopia]

That's why you have to use kext-dev-mode=1

Good Luck

I booted with kext-dev-mode=1, enabled Trim successfully then i rebooted and my VoodooHDA started making static/white noise so i reinstalled the audio driver and modified the iGain to 0 inside voodooHDA kext (This is what i usually do to make the white noise disappear) and the computer got stuck again after rreboot on USBMSC Identifier, i guess its not gonna work for me, at least now i know what initiates the error so that's something good out of trying. Luckily i had a time machine backup prior making system wide changes. Thanks for the help!

 

[P1LGRIM]

I booted with kext-dev-mode=1, enabled Trim successfully then i rebooted and my VoodooHDA started making static/white noise so i reinstalled the audio driver and modified the iGain to 0 inside voodooHDA kext (This is what i usually do to make the white noise disappear) and the computer got stuck again after rreboot on USBMSC Identifier, i guess its not gonna work for me, at least now i know what initiates the error so that's something good out of trying. Luckily i had a time machine backup prior making system wide changes. Thanks for the help!

Sorry to 'hear' that.

Good Luck

 

[Nyctalopia]

Sorry to 'hear' that.

Good Luck

Is it possible to keep a backup of non-patched IOAHCIFamily.kext on my Clover bootable USB and use it on boot incase something else triggers this error since everything i do that has to deal with this kext is causing the same error and now im hesitant to install any driver except Audio and Network.

 

[jaymis]

I encountered this issue while upgrading to Yosemite, on a "Customac 2010" Gigabyte X58A-UD3R build.

On verbose boot I would hang at "USBMSC Identifier (non-unique)", pause for around 15 seconds, then have "Still waiting for root device" repeatedly shown.

Removing "Trim Enabler > 10.10.x TRIM Patch" from Multibeast allowed me to boot successfully. I then re-enabled TRIM using Chameleon SSD Optimizer, and everything seems to be fine.

For Trim enabler to work I had to use their "Yosemite and kext sign control" instructions here: http://chameleon.alessandroboschini.com/faq.php

 

[adzeem.mohd]

I'm facing same problem..i can't boot to my yosemite usb on my vostro 3350 and getting same error message. How do you remove the trim setting in multibeast? I've no other working system. Do I need to creat other yosemite boot usb drive? Pls help me. Tq.