OK Thanks,
So I have finally been able to boot the Mac using an external SSD Drive (I was able to load Catalina from Command R)
Everything was looking great - I loaded the welcome screen etc and started to do a transfer from time machine - it then just died - black screen and had the message again in all languages that the computer had to restart because of an error ... press a key.
I was able to see the Problem Details
these are listed below. Does this mean there are further problems with the MAC and not the internal drive ?
I am hoping to just run the Mac from the External SSD drive - which does seem quite quick ...
panic(cpu 0 caller 0xffffff8010812667): "AppleAHCIDiskQueueManager::setPowerState(0xffffff8025124480 : 0xffffff7f919ab5d2, 3 -> 2) timed out after 100642 ms"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.2.2/iokit/Kernel/IOServicePM.cpp:5296
Backtrace (CPU 0), Frame : Return Address
0xffffff912502bb40 : 0xffffff801011868d
0xffffff912502bb90 : 0xffffff8010252ab5
0xffffff912502bbd0 : 0xffffff801024463e
0xffffff912502bc20 : 0xffffff80100bea40
0xffffff912502bc40 : 0xffffff8010117d57
0xffffff912502bd40 : 0xffffff8010118147
0xffffff912502bd90 : 0xffffff80108bf2bc
0xffffff912502be00 : 0xffffff8010812667
0xffffff912502be50 : 0xffffff8010811f49
0xffffff912502be60 : 0xffffff80108294de
0xffffff912502bea0 : 0xffffff8010810cf8
0xffffff912502bec0 : 0xffffff801015a645
0xffffff912502bf40 : 0xffffff801015a171
0xffffff912502bfa0 : 0xffffff80100be13e
BSD process name corresponding to current thread: kernel_task
Mac OS version:
19H15
Kernel version:
Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64
Kernel UUID: 9B5A7191-5B84-3990-8710-D9BD9273A8E5
Kernel slide: 0x000000000fe00000
Kernel text base: 0xffffff8010000000
__HIB text base: 0xffffff800ff00000
System model name: iMac15,1 (Mac-42FD25EABCABB274)
System shutdown begun: NO
Panic diags file available: NO (0xe00002bc)
System uptime in nanoseconds: 718088267634
last loaded kext at 18898386325: >DiskImages.SparseDiskImage 493.0.0 (addr 0xffffff7f945f0000, size 16384)
loaded kexts:
>DiskImages.SparseDiskImage 493.0.0
>DiskImages.ReadWriteDiskImage 493.0.0
>DiskImages.CryptoEncoding 493.0.0
>DiskImages.UDIFDiskImage 493.0.0
>DiskImages.HTTPBackingStore 493.0.0
>DiskImages.RAMBackingStore 493.0.0
>DiskImages.FileBackingStore 493.0.0
>!A!BMultitouch 97
>!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 3.1.0
>AudioAUUC 1.70
@kext.AMDRadeonX4000 3.1.0
@kext.AMDRadeonServiceManager 3.1.0
>!AGraphicsDevicePolicy 5.2.6
@fileutil 20.036.15
@AGDCPluginDisplayMetrics 5.2.6
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.6f7
>AGPM 111.4.4
>X86PlatformShim 1.0.0
>!APlatformEnabler 2.7.0d0
>pmtelemetry 1
>!AHDAHardwareConfigDriver 283.15
>!AMikeyHIDDriver 131
@Dont_Steal_Mac_OS_X 7.0.0
>AGDCBacklightControl 5.2.6
>!A!IHD5000Graphics 14.0.7
>!AHDA 283.15
>eficheck 1
>!AMikeyDriver 283.15
>ACPI_SMC_PlatformPlugin 1.0.0
>!ABacklight 180.3
>!AThunderboltIP 3.1.4
@kext.AMD7000!C 3.1.0
|!ABCM5701Ethernet 10.3.5
>!ASMCLMU 212
>!ALPC 3.1
>AirPort.BrcmNIC 1400.1.1
>!AFIVRDriver 4.1.0
>!A!ISlowAdaptiveClocking 4.0.0
>!AMCCSControl 1.14
>!A!IFramebufferAzul 14.0.7
@filesystems.autofs 3.0
|IO!BUSBDFU 7.0.6f7
|SCSITaskUserClient 422.120.3
>!U!SCoexistentDriver 489.120.1
>!AFileSystemDriver 3.0.1
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@filesystems.apfs 1412.141.1
@private.KextAudit 1.0
>!ASDXC 1.7.7
>!AAHCIPort 341.140.1
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>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
>DiskImages.KernelBacked 493.0.0
>!A!BHIDKeyboard 209
>IO!BHIDDriver 7.0.6f7
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
@kext.AMDRadeonX4030HWLibs 1.0
@kext.AMDRadeonX4000HWServices 3.1.0
>!AGraphicsControl 5.2.6
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@plugin.IOgPTPPlugin 840.3
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
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@!AGPUWrangler 5.2.6
>!ABacklightExpert 1.1.0
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@kext.AMDSupport 3.1.0
>!AHDA!C 283.15
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|IOEthernetAVB!C 1.1.0
>!AHIDKeyboard 209
>!ASMBusPCI 1.0.14d1
|IO80211!F 1200.12.2b1
>mDNSOffloadUserClient 1.0.1b8
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|IOSkywalk!F 1
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>IOPlatformPlugin!F 6.0.0d8
|IOSlowAdaptiveClocking!F 1.0.0
>!ASMBus!C 1.0.18d1
>!AThunderboltEDMSink 4.2.3
@!AGraphicsDeviceControl 5.2.6
|IOAccelerator!F2 438.7.3
|IOGraphics!F 576.1
@kext.triggers 1.0
>usb.IOUSBHostHIDDevice 1.2
|Broadcom!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CTransport 7.0.6f7
|IO!B!F 7.0.6f7
|IO!BPacketLogger 7.0.6f7
|IOUSBMass!SClass 4.0.4
>usb.!UHub 1.2
>usb.cdc 5.0.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
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|IOSerial!F 11
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@filesystems.hfs.encodings.kext 1
>!AThunderboltDPOutAdapter 6.2.6
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AThunderboltPCIDownAdapter 2.5.4
>!AXsanScheme 3
|IOAHCIBlock!S 316.100.5
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.1
|IOAHCI!F 290.0.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>!A!ILpssGspi 3.0.60
>usb.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
|IOSMBus!F 1.1
|IOHID!F 2.0.0
$quarantine 4
$sandbox 300.0
@Kext.!AMatch 1.0.0d1
>DiskImages 493.0.0
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!ASSE 1.0
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
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>IOSlaveProcessor 1
|IOTimeSync!F 840.3
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|IOUSBMass!SDriver 157.140.1
|IOSCSIArchitectureModel!F 422.120.3
|IO!S!F 2.1
|IOUSBHost!F 1.2
>!UHostMergeProperties 1.2
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>!ABusPower!C 1.0
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>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
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>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
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@kec.pthread 1
@kec.Libm 1
@kec.corecrypto 1.0