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Just bought a 3,06Ghz 27" iMac today and when setting up transferred data from my MacBookPro 15" from external hard disk via Time Machine. The setting of the MacBookPro have now affected my iMac and when I rebooted with the OS X 10.6 disk inserted I got the above plus a lot more. End result every time I switch computer off and on again I get that message.
panic( cpu 0 caller 0x559a5b): "unable to find driver for this platform:\"ACPI\". ETC ETC

FURTHER DOWN:
BSD process name corresponding to current thread: Unknown

Anybody out there with advise on this....There have been past issues like this but didn't give any clear solution....

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Restoring a full system image from a different Mac model commonly transfers low‑level drivers and system files that may not match the new hardware. In this case migrated a MacBookPro image onto a new iMac and is seeing immediate kernel panics; ’s suggestion to reinstall the OS is a sensible first move. Below is a focused, practical triage sequence and safe steps to isolate the problem while keeping user data intact.

Recommended triage (do these in order):

  • Reset NVRAM/PRAM (hold Command+Option+P+R at startup until the machine restarts/second chime) and reset the SMC (for an iMac, unplug the power for ~15s, plug back in, wait a few seconds, then power on).
  • Try Safe Boot (hold Shift) and Verbose Boot (Command+V) to see where the startup fails. Safe Boot skips many third‑party kernel extensions; if it succeeds, remove non‑Apple extensions.
  • Boot from an external installer or use Target Disk Mode (connect via FireWire to a working Mac) so the internal volume can be inspected without booting it. Run Disk Utility to verify/repair the volume.
  • If the install media also fails, perform a clean OS install on the iMac and use Migration Assistant to bring only user accounts and files (avoid migrating system folders or kernel extensions from the old machine).

Useful single‑user / recovery commands (inspect, don’t delete; move suspicious kexts to a backup folder first):

/sbin/mount -uw /
kextstat | grep -v com.apple
mkdir /Library/Extensions-disabled

Move only identified third‑party kexts, e.g.:

mv /Library/Extensions/ProblemKext.kext /Library/Extensions-disabled/
kextcache -system-prelinked-kernel

Final notes: always keep a backup before removing system files; moving kexts off the boot volume is safer than deletion. Panic logs (DiagnosticReports/kernel logs) give the exact failing component and are invaluable for diagnosis. If a clean install and removing third‑party kexts don’t stop the panics, the issue may be a firmware/EFI mismatch or hardware fault — at that point Apple or an Apple Authorized Service Provider can run the hardware/firmware recovery procedures that restore correct platform firmware.

Member Avatar for freshfitz

ACPI is a motherboard driver you may need to reinstall the os on the imac what items or files did you restore in time machine

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