Darwin 0.2

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All the evidence I have of this version is a dmesg on this web page, and it was apparently released in the "Summer 1999" period. However this kernel identifies itself being built in May 8th of 1999.

Kernel Release 0.2:
Sat May  8 13:53:02 PDT 1999; root
Copyright (c) 1988-1995,1997-1999 Apple Computer, Inc. All Rights Reserved.

MACH microkernel is booting on a Power Macintosh POWERSURGE class machine
CPU Frequency: 232651585 Hz
BUS Frequency:  46530317 Hz
L2 Frequency:  155101056 Hz  # 2:3 to CPU, cf. normal 1:2 (116.3 MHz)
mem_size = 64 M
hash table factor is 1
physical memory = 64.00 megabytes.
using 553 buffers containing 1.91 megabytes of memory
available memory = 55.80 megabytes. vm_page_free_count = 37cd
minimum quantum is 10 ms
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.

PPC bus support enabled
Registering: /bandit@f2000000
Registering: /chaos@f0000000
Registering: en0   [mace]  # Ethernet interface
en0: Ethernet address *:*:*:*:*:*  # address removed for security
Registering: Cuda   [via-cuda]
Registering: ADBBus
Registering: PPCKeyboard0 at handlerID 38
Registering: PPCPointer0
Registering: Display0   [control]
sc0: Resetting SCSI bus
Registering: sc0   [53c94]
SCSIDisk: sc0 requests 1 threads
sd0: I-O DATA HDVS-UM8.4G 101F
Registering: sd0 at Target 5 LUN 0 at sc0
sd0: No Valid Disk Label
sd0: Device Block Size: 512 bytes
sd0: Device Capacity:   8063 MB
SCSIDisk: sc0 requests 1 threads
sd1: ADTX AXSITS2532U 012F TC6O  # boot device
Registering: sd1 at Target 6 LUN 0 at sc0
sd1: Device Block Size: 512 bytes
sd1: Device Capacity:   3909 MB
sd1: Disk Label:        Disk
SCSIDisk: sc0 requests 1 threads
Registering: sc1   [mesh]
SCSIDisk: sc1 does not support ClientThreads selector, using default
sd2: QUANTUM FIREBALL1280S 630G
Registering: sd2 at Target 0 LUN 0 at sc1
sd2: No Valid Disk Label
sd2: Device Block Size: 512 bytes
sd2: Device Capacity:   1222 MB
SCSIDisk: sc1 does not support ClientThreads selector, using default
sd3: SONY CD-ROM CDU-8005 1.0j
Registering: sd3 at Target 3 LUN 0 at sc1
sd3: Disk Not Ready
SCSIDisk: sc1 does not support ClientThreads selector, using default
Registering: event0
Registering: kmDevice0
Root device for scsi/@6,0:7,mach_kernel found: sd1
root on sd1
rootdev 608, howto 40000