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MacOS X Build Numbers
Official releases | Computer specific builds | Developer releases

Official releases:

MacOS X version Build number
Public Beta 1H39, 2E14
10.0 4K78
10.0.1 4L13
10.0.2 4P12
10.0.3 4P13
10.0.4 4Q12
10.1 5G64
10.1 after Security Update 10-19-01 5L14, 5L17b
10.1.1 5M28
10.1.2 5P48
10.1.3 5Q45
10.1.4 5Q125
10.1.5 5S60
10.1.5 after Networking Update 1.0 5S66
10.2 6C115/6C115a
10.2.1 6D52
10.2.3 6G30
10.2.3 retail CD version 6G37
10.2.3 retail CD version for servers 6G50
10.2.4 6I32
10.2.5 6L29
10.2.6 6L60
10.2.8 (pulled one day after release) 6R50
10.2.8 (re-released) 6R73
10.3 7B85
10.3.1 7C107
10.3.2 7D24
10.3.2 retail CD version 7F28
10.3.3 7F44
10.3.4 7H63
10.3.5 7M34
10.3.6 7R28
10.3.7 7S215
10.3.8 7U16
10.3.9 7W98
10.4 8A432
10.4.1 8B15
10.4.2 8C46
10.4.3 8F46
10.4.4 8G32
10.4.5 (PowerPC) 8H14
10.4.5 (Intel) 8H1455
10.4.6 (PowerPC) 8I127
10.4.6 (Intel) 8I1119
10.4.7 (PowerPC) 8J135
10.4.7 (Intel), missing OpenGL files 8J2135
10.4.7 (Intel), re-released 8J2135a
10.4.8 (Intel) 8L2125
10.4.8 (PowerPC) 8L127
10.4.9 (Intel) 8P2137
10.4.9 (PowerPC) 8P135
10.4.10 (Intel) 8R2218
10.4.10 (PowerPC) 8R218
10.4.11 (Intel) 8S2165
10.4.11 (PowerPC) 8S165
10.5 9A581
10.5.1 9B18
10.5.2  
10.5.3 9D34

Computer specific builds:

MacOS X version Build number Included with
10.0.4 4P13 iMac (Summer 2001)
10.0.4 4R15 iMac (Summer 2001)
10.1.1 5M45 PowerBook G4
10.1.2 5P63 iMac (Summer 2001), iMac (Flat-Panel), Power Macintosh G4 (QuickSilver 2002), PowerBook G4 (Gigabit Ethernet)
10.1.2 5P54c iBook (14.1-inch display)
10.1.3 5Q83 iMac (Summer 2001), iMac (Flat-Panel)
10.1.4 5R48 iMac (Flat-Panel)
10.1.4 5R60 PowerBook G4 (DVI)
10.1.4 5R106 eMac
10.1.4 5T91 iMac (Flat-Panel)
10.1.5 5S54 Power Macintosh G4 (QuickSilver 2002)
10.2.1 6E31 Power Macintosh G4 (Mirrored Drive Doors)
10.2.1 6E32 Power Macintosh G4 (QuickSilver 2002), Macintosh Server G4 (Mirrored Drive Doors)
10.2.2 6F22 eMac
10.2.3 6H28 PowerBook G4 (12-inch)
10.2.3 6H30 PowerBook G4 (12-inch)
10.2.3 6H58 Power Macintosh G4 (FW 800), iMac (17-inch 1 GHz)
10.2.3 6H60 eMac, PowerBook G4 (1 GHz / 867 MHz), Power Macintosh G4 (FW 800)
10.2.4 6J25 PowerBook G4 (17-inch)
10.2.4 6J54 Power Macintosh G4 (FW 800)
10.2.4 6J73 iBook (32 VRAM)
10.2.7 6R42 iMac (USB 2.0)
10.2.7 6R49 iMac (USB 2.0)
10.2.7 6R52 iMac (USB 2.0)
10.2.7 6R55 PowerBook G4 (12-inch DVI), PowerBook G4 (15-inch FW 800), PowerBook G4 (17-inch)
10.2.7 6S74 Power Macintosh G5
10.2.7 6S75 Power Macintosh G5
10.2.7 6S80 Power Macintosh G5
10.2.8 6S90 Power Macintosh G5
10.3 7C9 iMac (20-inch Flat-Panel)
10.3 7E40 iBook Logic Board Update REA
10.3.2 7E46 Xserve G5
10.3.3 7G21 eMac (USB 2.0)
10.3.3 7G33 PowerBook G4 (12-inch April 2004), iBook G4 (1 GHz)
10.3.3 7G43 PowerBook G4 (15-inch April 2004), PowerBook G4 (17-inch April 2004)
10.3.3 7G51 iBook G4 (14-inch 1 GHz), iBook G4 (14-inch 1.2 GHz)
10.3.3 7G66 Xserve G5
10.3.4 7L18 Power Macintosh G5 (June 2004)
10.3.4 7L32 Power Macintosh G5 (June 2004)
10.3.4 7L33 eMac (USB 2.0)
10.3.4 7L46 PowerBook G4 (12-inch 1.33 Ghz), PowerBook G4 (15-inch 1.5/1.33 GHz), PowerBook G4 (17-inch 1.5 GHz)
10.3.5 7P50 iMac G5
10.3.5 7P124 Power Macintosh G5 (June 2004)
10.3.5 7P134 Power Macintosh G5 (Late 2004)
10.3.5 7P216 iBook G4 (Late 2004)
10.3.7 7T11 Mac mini
10.3.7 7T21 Mac mini
10.3.7 7T51 PowerBook G4 (12-inch 1.5 GHz)
10.3.7 7T52 Power Macintosh G5 (June 2004), Power Macintosh G5 (Late 2004), iBook G4 (Late 2004)
10.3.7 7T62 PowerBook G4 (15-inch 1.67/1.5 GHz), PowerBook G4 (17-inch 1.67 GHz)
10.3.8 7U16 Xserve (January 2005)
10.4 8A428 Power Macintosh G5 (Late 2004), Power Macintosh G5 (Early 2005), Mac mini, PowerBook G4 (15-inch 1.67/1.5 GHz), PowerBook G4 (17-inch 1.67 GHz), iBook G4 (Late 2004), eMac (2005)
10.4 8A451 eMac (2005)
10.4.2 8D37 iBook G4 (Mid 2005)
10.4.2 8D40 Mac mini (Late 2005)
10.4.2 8E45 PowerBook G4 (Double-Layer SD)
10.4.2 8E90 Power Macintosh G5 (Late 2005)
10.4.2 8E90A Mac mini (Late 2005)
10.4.2 8E102 iMac G5 (iSight)
10.4.4 8G1165 iMac (Core Duo)
10.4.5 8G1453 MacBook Pro
10.4.5 8G1454 iMac (Core Duo)
10.4.6 8L2025 MacBook
10.4.6 8I2032 MacBook Pro (17-inch)
10.4.6 8I2057 iMac (Mid 2006 17-inch)
10.4.7 8K1106 iMac (Late 2006)
10.4.7 8K1079 Mac Pro
10.4.7 8K1123 iMac (Late 2006, 24-inch)
10.4.7 8J2135 Mac mini (Late 2006)
10.4.8 8N1037 MacBook Pro (Core 2 Duo)
10.4.8 8N1108 MacBook (Late 2006)
10.4.8 8N1215 Xserve (Late 2006)
10.4.9 8P4112 MacBook (13-inch Mid 2007)
10.4.9 8Q1058 MacBook Pro (2.4/2.2 GHz)
10.4.10 8R3014 Mac mini (Mid 2007)
10.4.10 8R4031 iMac (Mid 2007)
10.5 9A3111 MacBook (13-inch Late 2007)
10.5.1 9B2117 Mac Pro (Early 2008), Xserve (Early 2008)
10.5.1 9B2324 MacBook Air
10.5.2 9C2028 iMac (Early 2008)
10.5.2 9C2018 MacBook Pro (Early 2008)
10.5.2 9C2015 MacBook (13-inch Early 2008)

Developer releases:

MacOS X version Build number
10.0 Developer Preview 2 4K46
10.0 Developer Preview 3 4K56
10.0 Developer Preview 4 4K60
10.1 MacWorldExpo NY 2001 Preview 5F24/5F26
10.1.2 pre-release 5P28
10.1.3 first pre-release build 5Q28
10.2 early developement 6A14/6B11
10.2 pre-release 6C73
10.2.1 pre-release 6D47, 6D51
10.2.2 6F12
10.2.3 pre-release 6G14/6G19
10.2.4 MacWorldExpo SF 2003 Preview 6J11
10.2.4 pre-release 6I20
10.2.7 WWDC PowerMac G5 Preview 6S25
10.2.7 pre-release 6R34, 6R43, 6R54
10.2.7 G3/G4 Macs build 6R50
10.2.8 pre-release 6R57, 6R59, 6R62
10.3 WWDC Preview 7A179
10.3 Test Software Update 7A202
10.3 pre-release 7B21, 7B20, 7B25, 7B28, 7B34, 7B39, 7B49, 7B53, 7B55, 7B59, 7B68, 7B74, 7B80, 7B81
10.3.1 pre-release 7C03, 7C103
10.3.2 pre-release 7D12, 7D15, 7D18, 7D20, 7D23
10.3.3 pre-release 7F24, 7F32, 7F34, 7F38, 7F43
10.3.4 pre-release 7H41, 7H46, 7H50, 7H51a, 7H58, 7H60
10.3.4 Spoken Interface Preview 7S148
10.3.5 pre-release 7M18, 7M20, 7M28, 7M30
10.3.6 pre-release 7R9, 7R10, 7R12, 7R14, 7R20, 7R24, 7R27
10.3.7 pre-release 7S202, 7S210, 7S214
10.3.8 pre-release 7U3, 7U7, 7U10, 7U15
10.3.9 pre-release 7W72, 7W77, 7W82, 7W86, 7W87, 7W90, 7W94
10.4 early development 8A85
10.4 pre-release 8A162, 8A171, 8A268, 8A269, 8A270, 8A294, 8A323, 8A325, 8A351, 8A369, 8A378, 8A393, 8A414, 8A420, 8A425
10.4 developer preview J2SE 5.0 Release 1
10.4 Gold Master 8A428
10.4.1 pre-release 8B5, 8B7, 8B9, 8B13
10.4.1 for Developer Transition Kit 8B1025
10.4.2 pre-release 8C21, 8C26, 8C27, 8C29, 8C32, 8C33, 8C40, 8C44
10.4.2 for Developer Transition Kit 8B1072
10.4.3 pre-release 8F8, 8F15, 8F16, 8F20, 8F23, 8F28, 8F31, 8F45
10.4.3 for Developer Transition Kit 8F1111A
10.4.4 pre-release 8G7, 8G9, 8G17, 8G22
10.4.5 pre-release (PowerPC) 8H3, 8H5, 8H12
10.4.5 pre-release (Intel) 8G1443, 8G1445
10.4.6 pre-release (PowerPC) 8I109, 8I124
10.4.6 pre-release (Intel) 8I102, 8I116
10.4.7 pre-release (PowerPC) 8J111, 8J115, 8J119, 8J122
10.4.7 pre-release (Intel) 8J2111, 8J2115, 8J2119, 8J2122
10.4.8 pre-release (PowerPC) 8L108, 8L112
10.4.8 pre-release (Intel) 8L2108, 8L2112
10.4.9 pre-release (PowerPC) 8P111, 8P117, 8P120, 8P122, 8P125, 8P132
10.4.9 pre-release (Intel) 8P2111, 8P2117, 8P2120, 8P2122, 8P2125, 8P2132
10.4.10 pre-release (PowerPC) 8R205, 8R208, 8R210
10.4.10 pre-release (Intel) 8R2205, 8R2208, 8R2210
10.4.11 pre-release (PowerPC) 8S138, 8S144, 8S146, 8S151, 8S257, 8S161
10.4.11 pre-release (Intel) 8S2138, 8S2144, 8S2146, 8S2151, 8S2157, 8S2161
10.5 pre-release 9A241, 9A241e, 9A283, 9A303, 9A321, 9A343, 9A377a, 9A410, 9A499, 9A500n, 9A527, 9A528, 9A528d, 9A557, 9A559, 9A599
10.5 Gold Master 9A581
10.5.1 pre-release 9B16, 9B18
10.5.2 pre-release 9C7, 9C16, 9C20, 9C27
10.5.3 pre-release 9D10, 9D11, 9D19, 9D20
10.5.4 pre-release 9E6, 9E12, 9E17
10.5.5 pre-release 9F5, 9F9, 9F13, 9F17, 9F23, 9F32
10.5.6 pre-release 9G21, 9G35, 9G38, 9G52, 9G55
10.5.7 pre-release 9J22, 9J30, 9J34, 9J39, 9J44, 9J47, 9J50, 9J56, 9J58, 9J60
10.5.8 pre-release 9L16, 9L20, 9L22
10.6 pre-release 10A96, 10A190, 10A222, 10A261, 10A286, 10A335, 10A380, 10A394, 10A402, 10A411