Hi folks,
I'm having trouble with an iMac about year 2007 that refuses to boot. It displays the light grey screen with the rotating wheel.
After a few minutes, a black popup asks to reboot the computer.
I used an Apple USB keyboard and an Apple USB mouse for my tests.
All other devices like USB external hard drive or wireless mouse were disconnected.
I tried all possible key combinations I knew, as listed here
Mac OS X Startup Shortcuts
excepted the "Command R".
I also had done the fsck -yf disk checking.
According to customer, the system runs under OS X 10.6.8.
His installation CDs are however 10.4.8.
I don't know if the difference comes from upgrades that the customer has done himself or by some IT people.
I observed that the installation CD from 10.4.8 does not launch when pressing the C key from the very beginning.
I can hear the compact disk rotating fast at the beginning, but then it gets much quieter.
After a few minutes, the monitor still displays the light grey screen. Not any CD splash screen that I could expect.
When running the system in Single-User Mode, the last messages printed are:
Then the black and white screen stays.
When starting the system in verbose mode, I get more or less the same messages than in single user mode.
Between the two "AppleYukon2" lines, this line is additionally printed:
I suspect some problem with the Bluetooth; could it be?
Contrarily to Apple's installation CD, Knoppix (a live CD based on Linux) launches and works without problem.
Knoppix was able to recognise the USB keyboard, but not a wireless one.
After mounting the computer hard drive (which system was GPT) under Knoppix, I could see that the following folders and file structure:
If I remember, all files listed were from 2007.
I expected I could see other files, but I could not, probably because of the GPT system.
Later, I plugged some external hard drive which is used by my customer for backup purposes.
The system was also GPT and Knoppix was not able to list its files.
But plugging the same hard drive to a MacBook showed that it contained files.
I know that my customer has been previously using wireless mouse from Microsoft and the problem seems having occured after the mouse battery replacement.
His wireless keyboard was original from Apple.
I'm a bit lost about what to try now.
Can anyone help ? Thank you very much.
I'm having trouble with an iMac about year 2007 that refuses to boot. It displays the light grey screen with the rotating wheel.
After a few minutes, a black popup asks to reboot the computer.
I used an Apple USB keyboard and an Apple USB mouse for my tests.
All other devices like USB external hard drive or wireless mouse were disconnected.
I tried all possible key combinations I knew, as listed here
Mac OS X Startup Shortcuts
excepted the "Command R".
I also had done the fsck -yf disk checking.
According to customer, the system runs under OS X 10.6.8.
His installation CDs are however 10.4.8.
I don't know if the difference comes from upgrades that the customer has done himself or by some IT people.
I observed that the installation CD from 10.4.8 does not launch when pressing the C key from the very beginning.
I can hear the compact disk rotating fast at the beginning, but then it gets much quieter.
After a few minutes, the monitor still displays the light grey screen. Not any CD splash screen that I could expect.
When running the system in Single-User Mode, the last messages printed are:
Code:
BTCOEXISTS off
wl0 : Broadcom BCM4328 802.11 Wireless Controler
5.10.131.42
Got boot device = IOService (...)
led_
FireWire (OHCI) TI ID 8025 built-in now active, GUID 0019e3fffe9855fe; max speed S800,
BSD root : disk0s2, major 14, minor 2
[Bluetooth: CSRHID Transition Single User waiting WindowServer
com.apple launchd 1 com.apple launchd 1 *** launchd[1] has started up. ***
AppleYukon2: Marvell Yukon Gigabit Adapter 88E8053 Singleport Copper SA
AppleYukon2: RxRingSize <= 1024, TxRingSize 256, RX_MAX_LE 1024, TX_MAX_LE 768, ST_MAX_LE 3228
Then the black and white screen stays.
When starting the system in verbose mode, I get more or less the same messages than in single user mode.
Between the two "AppleYukon2" lines, this line is additionally printed:
Code:
CSRUSBBlueHCIController :: setupHardware super returned 0
I suspect some problem with the Bluetooth; could it be?
Contrarily to Apple's installation CD, Knoppix (a live CD based on Linux) launches and works without problem.
Knoppix was able to recognise the USB keyboard, but not a wireless one.
After mounting the computer hard drive (which system was GPT) under Knoppix, I could see that the following folders and file structure:
Code:
EFI
|_APPLE
|_EXTENSIONS
|_Firmware.scrap size: 15729264
|
|_FIRMWARE
|_._EfiUpdaterApp2.efi size:4096
|_.LOCKED_IM61_0093_07B.fd size:4096
|_EfiUpdaterApp2.efi size: 107536
|_LOCKED_IM61_0093_07B.fd size: 2097151
If I remember, all files listed were from 2007.
I expected I could see other files, but I could not, probably because of the GPT system.
Later, I plugged some external hard drive which is used by my customer for backup purposes.
The system was also GPT and Knoppix was not able to list its files.
But plugging the same hard drive to a MacBook showed that it contained files.
I know that my customer has been previously using wireless mouse from Microsoft and the problem seems having occured after the mouse battery replacement.
His wireless keyboard was original from Apple.
I'm a bit lost about what to try now.
Can anyone help ? Thank you very much.