"Your computer was restarted because of a problem" Boot drive not booting up

[soundartsonline]

Have a new install of yosemite on a carbon copy external drive bootable drive which is not booting up.

Can anyone make sense of the following report?
Anonymous UUID: 3DFB399B-DEB2-4890-CDF4-BDFA0417403F

Wed Sep 8 08:29:53 2021

*** Panic Report ***
panic(cpu 1 caller 0xffffff800e7286fb): unexpected SIGKILL of init with reason -- namespace 9 code 0x1 description none
Backtrace (CPU 1), Frame : Return Address
0xffffff81eba5b680 : 0xffffff800e26ae76
0xffffff81eba5b6d0 : 0xffffff800e394484
0xffffff81eba5b710 : 0xffffff800e386654
0xffffff81eba5b780 : 0xffffff800e21ce60
0xffffff81eba5b7a0 : 0xffffff800e26a8ec
0xffffff81eba5b8d0 : 0xffffff800e26a6ac
0xffffff81eba5b930 : 0xffffff800e7286fb
0xffffff81eba5b9e0 : 0xffffff800e70b564
0xffffff81eba5bd20 : 0xffffff800e70f995
0xffffff81eba5bda0 : 0xffffff800e710bd6
0xffffff81eba5be30 : 0xffffff800e7111ce
0xffffff81eba5beb0 : 0xffffff800e6db6e0
0xffffff81eba5bed0 : 0xffffff800e72bc91
0xffffff81eba5bf20 : 0xffffff800e26327f
0xffffff81eba5bf70 : 0xffffff800e21ce2c

BSD process name corresponding to current thread: init

Mac OS version:
Not yet set

Kernel version:
Darwin Kernel Version 17.7.0: Fri Oct 30 13:34:27 PDT 2020; root:xnu-4570.71.82.8~1/RELEASE_X86_64
Kernel UUID: 5E83A13A-32F5-3604-8591-50E2F2F70DC6
Kernel slide: 0x000000000e000000
Kernel text base: 0xffffff800e200000
__HIB text base: 0xffffff800e100000
System model name: iMac12,1 (Mac-942B5BF58194151B)

System uptime in nanoseconds: 5602963636
last loaded kext at 2536839197: com.apple.driver.AppleHIDKeyboard 205.1 (addr 0xffffff7f902b9000, size 45056)
loaded kexts:
com.apple.iokit.IOBluetoothUSBDFU 6.0.7f22
com.apple.iokit.SCSITaskUserClient 404.30.3
com.apple.driver.AppleIRController 353
com.apple.driver.AppleUSBStorageCoexistentDriver 439.70.3
com.apple.driver.AppleUSBCardReader 439.70.3
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTyp eDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTyp eZlib 1.0.0
com.apple.AppleSystemPolicy 1.0
com.apple.BootCache 40
com.apple.filesystems.hfs.kext 407.50.6
com.apple.filesystems.apfs 748.51.0
com.apple.iokit.AppleBCM5701Ethernet 10.3.1
com.apple.driver.AppleFWOHCI 5.5.9
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleAHCIPort 329.50.2
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleACPIButtons 6.1
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 6.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClien t 220.50.1
com.apple.nke.applicationfirewall 186
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 220.50.1
com.apple.driver.AppleHIDKeyboard 205.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice 404.30.3
com.apple.iokit.IOBDStorageFamily 1.8
com.apple.iokit.IODVDStorageFamily 1.8
com.apple.iokit.IOCDStorageFamily 1.8
com.apple.iokit.IOAHCISerialATAPI 267.50.1
com.apple.iokit.BroadcomBluetoothHostControllerUSB Transport 6.0.7f22
com.apple.iokit.IOBluetoothHostControllerUSBTransp ort 6.0.7f22
com.apple.iokit.IOBluetoothHostControllerTransport 6.0.7f22
com.apple.iokit.IOBluetoothFamily 6.0.7f22
com.apple.driver.usb.IOUSBHostHIDDevice 1.2
com.apple.iokit.IOUSBMassStorageClass 4.0.4
com.apple.driver.usb.cdc 5.0.0
com.apple.driver.usb.networking 5.0.0
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.AppleThunderboltDPInAdapter 5.5.5
com.apple.driver.AppleThunderboltDPOutAdapter 5.5.5
com.apple.driver.AppleThunderboltDPAdapterFamily 5.5.5
com.apple.driver.AppleThunderboltPCIUpAdapter 2.1.3
com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleXsanScheme 3
com.apple.iokit.IOAHCIBlockStorage 301.40.2
com.apple.iokit.IOEthernetAVBController 1.1.0
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.driver.AppleThunderboltNHI 4.7.3
com.apple.iokit.IOThunderboltFamily 6.7.10
com.apple.iokit.IOFireWireFamily 4.7.2
com.apple.iokit.IO80211Family 1200.12.2
com.apple.driver.corecapture 1.0.4
com.apple.driver.AppleUSBMergeNub 900.4.1
com.apple.iokit.IOAHCIFamily 288
com.apple.driver.usb.AppleUSBEHCIPCI 1.2
com.apple.driver.usb.AppleUSBUHCIPCI 1.2
com.apple.driver.usb.AppleUSBUHCI 1.2
com.apple.driver.usb.AppleUSBEHCI 1.2
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOUSBFamily 900.4.1
com.apple.driver.AppleUSBHostMergeProperties 1.2
com.apple.driver.AppleEFINVRAM 2.1
com.apple.driver.AppleEFIRuntime 2.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleUSBTDM 439.70.3
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.iokit.IOUSBMassStorageDriver 140.70.2
com.apple.iokit.IOSCSIBlockCommandsDevice 404.30.3
com.apple.iokit.IOSCSIArchitectureModelFamily 404.30.3
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.KernelRelayHost 1
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleBusPowerController 1.0
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.IOSlaveProcessor 1
com.apple.driver.DiskImages 480.60.3
com.apple.iokit.IOStorageFamily 2.1
com.apple.iokit.IOReportFamily 31
com.apple.iokit.IOTimeSyncFamily 680.15
com.apple.iokit.IONetworkingFamily 3.4
com.apple.driver.AppleACPIPlatform 6.1
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.Libm 1
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0

EOF
Model: iMac12,1, BootROM 87.0.0.0.0, 4 processors, Intel Core i5, 2.5 GHz, 16 GB, SMC 1.71f21
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x202020202020202020202020202020202020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334348302D4348392020
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334448302D4348392020
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x202020202020202020202020202020202020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 6.0.7f22, 3 services, 27 devices, 1 incoming serial ports
Network Service: Thunderbolt Ethernet, Ethernet, en2
PCI Card: Apple 57762-A0, Ethernet Controller, Thunderbolt@195,0,0
Serial ATA Device: ST3500418AS, 500.11 GB
Serial ATA Device: OPTIARC DVD RW AD-5680H
USB Device: USB 2.0 Bus
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: BUP Slim BL
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: USB2.0 Hub
USB Device: USB 2.0 Hub
USB Device: Portable
USB Device: Portable
USB Device: Kensington Eagle Trackball
USB Device: IR Receiver
USB Device: Internal Memory Card Reader
Thunderbolt Bus: iMac, Apple Inc., 22.1
Thunderbolt Device: Thunderbolt to Gigabit Ethernet Adapter, Apple Inc., 1, 5.5