> Operating System: Mac OS X 10.4 (Tiger)
> Processor: Power PC
>
> A clean boot of my system (10.4.11), I launch Virtual PC for mac version
> 7.0.3, start up Windows XP Home in full screen and before XP is finished
> loading I get an error message. Something to the effect of software/hardware
> changes or a sudden power outage and offers me the chance to go to safe
> mode/safe mode with networking/whatever. At about this time my physical
> machine has a kernel panic.
>
> Remarks:
>
> - I had just recently updated to service pack 3, and gone to IE 8
> - the only non microsoft software on the machine is a small, trusted piece of
> software from Industry Canada
> - while XP is booting up my cursor still remains black à la mac - odd
> - peripherals: LaCie external HD, microphone, headset
> - everything was working fine yesterday, what gives?
>
> Technical:
>
> Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000000
> PC=0x00000000006C0750
> Latest crash info for cpu 0:
> Exception state (sv=0x27267500)
> PC=0x006C0750; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000;
> LR=0x006C6F4C; R1=0x123F36E0; XCP=0x0000000C (0x300 - Data access)
> Backtrace:
> 0x01BD4500 0x006C6F4C 0x005AF8F8 0x005B3714 0x006BE5BC 0x002BE088
> 0x002BE37C 0x002B9BA0 0x002BE31C 0x002BE3E4 0x0046D2A0 0x002BE088
> 0x002BE37C 0x002B9BA0
> 0x002BE31C 0x002BE3E4 0x0047645C 0x00953080 0x00953750 0x00953540
> 0x0003CA1C 0x000A9714
> Kernel loadable modules in backtrace (with dependencies):
> com.apple.driver.AppleUSBAudio(2.5.2b9)@0x6bc000
> dependency: com.apple.iokit.IOUSBFamily(2.8.1)@0x463000
> dependency: com.apple.iokit.IOAudioFamily(1.5.5b2)@0x5ad000
> com.apple.iokit.IOAudioFamily(1.5.5b2)@0x5ad000
> dependency: com.apple.iokit.IOUSBFamily(2.8.1)@0x463000
> com.apple.driver.AppleUSBHub(2.5.6)@0x94c000
> dependency: com.apple.iokit.IOUSBFamily(2.8.1)@0x463000
> com.apple.iokit.IOUSBFamily(2.8.1)@0x463000
> Proceeding back via exception chain:
> Exception state (sv=0x27267500)
> previously dumped as "Latest" state. skipping...
> Exception state (sv=0x279AAC80)
> PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000;
> LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
>
> Kernel version:
> Darwin Kernel Version 8.11.0: Wed Oct 10 18:26:00 PDT 2007;
> root:xnu-792.24.17~1/RELEASE_PPC
> panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
> Latest stack backtrace for cpu 0:
> Backtrace:
> 0x000954F8 0x00095A10 0x00026898 0x000A8204 0x000ABB80
> Proceeding back via exception chain:
> Exception state (sv=0x27267500)
> PC=0x006C0750; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000;
> LR=0x006C6F4C; R1=0x123F36E0; XCP=0x0000000C (0x300 - Data access)
> Backtrace:
> 0x01BD4500 0x006C6F4C 0x005AF8F8 0x005B3714 0x006BE5BC 0x002BE088
> 0x002BE37C 0x002B9BA0 0x002BE31C 0x002BE3E4 0x0046D2A0 0x002BE088
> 0x002BE37C 0x002B9BA0
> 0x002BE31C 0x002BE3E4 0x0047645C 0x00953080 0x00953750 0x00953540
> 0x0003CA1C 0x000A9714
> Kernel loadable modules in backtrace (with dependencies):
> com.apple.driver.AppleUSBAudio(2.5.2b9)@0x6bc000
> Model: PowerBook6,7, BootROM 4.9.3f0, 1 processors, PowerPC G4
> (1.1), 1.33 GHz, 768 MB
> Graphics: ATI Mobility Radeon 9550, ATY,M12, AGP, 32 MB
> Memory Module: DIMM0/BUILT-IN, 512 MB, built-in, built-in
> Memory Module: DIMM1/J7, 256 MB, DDR SDRAM, PC2700U-25330
> AirPort: AirPort Extreme, 405.1 (3.90.34.0.p18)
> Modem: Jump, V.92, Version 1.0
> Bluetooth: Version 1.9.5f4, 2 service, 0 devices, 1 incoming serial ports
> Network Service: Built-in Ethernet, Ethernet, en0
> PCI Card: pci106b,4318, sppci_othernetwork, SLOT-B
> Parallel ATA Device: MATSHITACD-RW CW-8124
> Parallel ATA Device: TOSHIBA MK4025GAS, 37.26 GB
> USB Device: little disk, LaCie, Up to 480 Mb/sec, 500 mA
> USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500
> mA
> USB Device: Apple Internal Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
> USB Device: AK

> Hi Fred, by a System roll back a presume you mean System Restore. Doing so is
> not possible. Windows gives me the message about hardware/software changes or
> power outage and the kernel panic on osx happen well before I log in to XP.

> The problem has been resolved for now. I went into windowed, rather than
> fullscreen, selected Safe Mode when confronted with the screen alleging the
> hardware changes/sudden power outage and performed a System Restore to a point
> in time prior to service pack 3 and IE 8. Now that everything is working I
> will have to investigate what caused the problem in the first place and avoid
> it.