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Error downgrading to Snowleopard from Lion.

post #1 of 7
Thread Starter 
Hello, I recently have been trying to install Snowleopard on a late 2011 unibody Macbook pro laptop. I have encountered this error every time I try to boot from the CD: 'panic unsupported cpu family 0x6'
Some other people online have encountered the same problem, but have not found answers. One post's reply stated they did not have the correct pre-installed drivers. Is this correct?

Now I am no expert, but 'panic unsupported cpu family 0x6' seems to suggest that it is not compatible with the hardware at all. frown.gif

Any help would be much appreciated.
post #2 of 7
Late 2011 only supports 10.7 or newer. It was released with 10.7.2. That is the earliest OS you can put on the machine. You might be able to mod it a bit with new kext but be warned that it might just be flaky and unstable. I was able to get a Mac Mini to do this but not without video issues.
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Kingston SSDNow V300 Series SV300S37A/120G 2.5"... SanDisk Ultra Plus SDSSDHP-128G-G25 2.5" 128GB ... CD/DVDRW (+LightScribe...woohoo) Cooler Master Hyper212 EVO 
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post #3 of 7
Thread Starter 
That's a shame, snow-leopard was one of there most secure and stable OS.
Thanks for the help.
post #4 of 7
Yeah, it was a great OS. Just have to build yourself a Hack******. thumb.gif If you would have a computer that was the generation earlier that year then you could have Snow Leopard. Weird right. . . It is all part of Apple's scheme to move people along and not have them stuck on older stuff.
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Intel Core i5 2500K GIGABYTE GA-Z68XP-UD3 MSI N680GTX Lightning GeForce GTX 680 2GB Corsair Vengeance 8 GB DDR3 1600 MHz (PC3 12800) 
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Kingston SSDNow V300 Series SV300S37A/120G 2.5"... SanDisk Ultra Plus SDSSDHP-128G-G25 2.5" 128GB ... CD/DVDRW (+LightScribe...woohoo) Cooler Master Hyper212 EVO 
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Intel 2670QM 700Z5B Intel HD 3000 Radeon HD 7400M (512 MB) 
RAMHard DriveOptical DriveOS
8 GB SanDisk Ultra II 480GB MATSHITA DVD-RAM (UJ8A7AS) Windows 10 
Monitor
15" (1600x900) 
CPUMotherboardGraphicsRAM
Core i7 4790 Dell 08WKV3 Intel HD 4600 16 GB 
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Samsung 850 EVO (250 GB) YES Stock Windows 10 Pro 
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post #5 of 7
http://forums.macrumors.com/showthread.php?t=1275346

Read this thread, you can run late 2011's with Snow but you cannot start with 10.6.3 i.e. the last retail Snow disk
 
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CPUMotherboardGraphicsRAM
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CoolingCoolingCoolingCooling
bequiet! Silent Wings 2 140mm PWM bequiet! Silent Wings 2 140mm PWM bequiet! Shadow Wings SW1 120mm PWM bequiet! Dark Rock Pro 3 
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Arch X64 / Gnome and OSX 10.11 Dell U2414H KBC Poker II be quiet! Straight Power 10 400W 
CaseMouse
bequiet! Silent Base 800 Speedlink Omni VI  
CPUMotherboardGraphicsRAM
i5 3427U The Googs HD4000 4GB DDR3 
Hard DriveOSMonitorKeyboard
32GB Flash / 128GB SanDisk Extreme SD card ChromeOS / Ubuntu 14.04 12" 2560x1700 bad 
PowerCaseMouseAudio
not much  Aluminium  Trackpad it makes noise I think  
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DD Portable
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CPUMotherboardGraphicsRAM
i5 5675C Gigabyte GA-Z97X Gaming 5 XFX RX 480 GTR 32GB Corsair Vengeance 1600 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Evo Western Digital Black RE4 2TB Western Digital Green 2TB Arctic Cooling Accelero S3 (Passive for GPU) 
CoolingCoolingCoolingCooling
bequiet! Silent Wings 2 140mm PWM bequiet! Silent Wings 2 140mm PWM bequiet! Shadow Wings SW1 120mm PWM bequiet! Dark Rock Pro 3 
OSMonitorKeyboardPower
Arch X64 / Gnome and OSX 10.11 Dell U2414H KBC Poker II be quiet! Straight Power 10 400W 
CaseMouse
bequiet! Silent Base 800 Speedlink Omni VI  
CPUMotherboardGraphicsRAM
i5 3427U The Googs HD4000 4GB DDR3 
Hard DriveOSMonitorKeyboard
32GB Flash / 128GB SanDisk Extreme SD card ChromeOS / Ubuntu 14.04 12" 2560x1700 bad 
PowerCaseMouseAudio
not much  Aluminium  Trackpad it makes noise I think  
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post #6 of 7
Good catch on that one. Why didn't I think of MacRumors!! lol biggrin.gif
Home Chilly Hack
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Free Book
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Work....
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K GIGABYTE GA-Z68XP-UD3 MSI N680GTX Lightning GeForce GTX 680 2GB Corsair Vengeance 8 GB DDR3 1600 MHz (PC3 12800) 
Hard DriveHard DriveHard DriveHard Drive
Western Digital Black (3.5") 1TB Western Digital Black (2.5") 750GB Western Digital Green (Bare Drive - External Ba... Western Digital Red (Bare Drive - External Back... 
Hard DriveHard DriveOptical DriveCooling
Kingston SSDNow V300 Series SV300S37A/120G 2.5"... SanDisk Ultra Plus SDSSDHP-128G-G25 2.5" 128GB ... CD/DVDRW (+LightScribe...woohoo) Cooler Master Hyper212 EVO 
OSOSMonitorMonitor
Windows 10 Pro Mac OSX 10.10.5 ASUS VS248H-P 24" Widescreen HannsG 17" Widescreen (1440 x 900) 
KeyboardPowerCaseMouse
Used Apple Aluminum Wired 550 Watt Corsair VX550 CM 692A Corsair Black M65 
Other
ICY DOCK FLEX-FIT Trio MB343SP 2 x 2.5” HDD/SSD... 
CPUMotherboardGraphicsGraphics
Intel 2670QM 700Z5B Intel HD 3000 Radeon HD 7400M (512 MB) 
RAMHard DriveOptical DriveOS
8 GB SanDisk Ultra II 480GB MATSHITA DVD-RAM (UJ8A7AS) Windows 10 
Monitor
15" (1600x900) 
CPUMotherboardGraphicsRAM
Core i7 4790 Dell 08WKV3 Intel HD 4600 16 GB 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO (250 GB) YES Stock Windows 10 Pro 
MonitorMonitorKeyboardMouse
Dell P2412H Dell P2412H CMStorm (Cherry MX Reds w/ o-rings added) Logitech G402 
Other
Apple Aluminum Keyboard 
  hide details  
Reply
Home Chilly Hack
(21 items)
 
Free Book
(9 items)
 
Work....
(13 items)
 
CPUMotherboardGraphicsRAM
Intel Core i5 2500K GIGABYTE GA-Z68XP-UD3 MSI N680GTX Lightning GeForce GTX 680 2GB Corsair Vengeance 8 GB DDR3 1600 MHz (PC3 12800) 
Hard DriveHard DriveHard DriveHard Drive
Western Digital Black (3.5") 1TB Western Digital Black (2.5") 750GB Western Digital Green (Bare Drive - External Ba... Western Digital Red (Bare Drive - External Back... 
Hard DriveHard DriveOptical DriveCooling
Kingston SSDNow V300 Series SV300S37A/120G 2.5"... SanDisk Ultra Plus SDSSDHP-128G-G25 2.5" 128GB ... CD/DVDRW (+LightScribe...woohoo) Cooler Master Hyper212 EVO 
OSOSMonitorMonitor
Windows 10 Pro Mac OSX 10.10.5 ASUS VS248H-P 24" Widescreen HannsG 17" Widescreen (1440 x 900) 
KeyboardPowerCaseMouse
Used Apple Aluminum Wired 550 Watt Corsair VX550 CM 692A Corsair Black M65 
Other
ICY DOCK FLEX-FIT Trio MB343SP 2 x 2.5” HDD/SSD... 
CPUMotherboardGraphicsGraphics
Intel 2670QM 700Z5B Intel HD 3000 Radeon HD 7400M (512 MB) 
RAMHard DriveOptical DriveOS
8 GB SanDisk Ultra II 480GB MATSHITA DVD-RAM (UJ8A7AS) Windows 10 
Monitor
15" (1600x900) 
CPUMotherboardGraphicsRAM
Core i7 4790 Dell 08WKV3 Intel HD 4600 16 GB 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO (250 GB) YES Stock Windows 10 Pro 
MonitorMonitorKeyboardMouse
Dell P2412H Dell P2412H CMStorm (Cherry MX Reds w/ o-rings added) Logitech G402 
Other
Apple Aluminum Keyboard 
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post #7 of 7
I'm migrating my machines back to Snow I just don't like 10.7/10.8/10.9 there's just not enough compelling benefits.
 
DD Portable
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 5675C Gigabyte GA-Z97X Gaming 5 XFX RX 480 GTR 32GB Corsair Vengeance 1600 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Evo Western Digital Black RE4 2TB Western Digital Green 2TB Arctic Cooling Accelero S3 (Passive for GPU) 
CoolingCoolingCoolingCooling
bequiet! Silent Wings 2 140mm PWM bequiet! Silent Wings 2 140mm PWM bequiet! Shadow Wings SW1 120mm PWM bequiet! Dark Rock Pro 3 
OSMonitorKeyboardPower
Arch X64 / Gnome and OSX 10.11 Dell U2414H KBC Poker II be quiet! Straight Power 10 400W 
CaseMouse
bequiet! Silent Base 800 Speedlink Omni VI  
CPUMotherboardGraphicsRAM
i5 3427U The Googs HD4000 4GB DDR3 
Hard DriveOSMonitorKeyboard
32GB Flash / 128GB SanDisk Extreme SD card ChromeOS / Ubuntu 14.04 12" 2560x1700 bad 
PowerCaseMouseAudio
not much  Aluminium  Trackpad it makes noise I think  
  hide details  
Reply
 
DD Portable
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 5675C Gigabyte GA-Z97X Gaming 5 XFX RX 480 GTR 32GB Corsair Vengeance 1600 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Evo Western Digital Black RE4 2TB Western Digital Green 2TB Arctic Cooling Accelero S3 (Passive for GPU) 
CoolingCoolingCoolingCooling
bequiet! Silent Wings 2 140mm PWM bequiet! Silent Wings 2 140mm PWM bequiet! Shadow Wings SW1 120mm PWM bequiet! Dark Rock Pro 3 
OSMonitorKeyboardPower
Arch X64 / Gnome and OSX 10.11 Dell U2414H KBC Poker II be quiet! Straight Power 10 400W 
CaseMouse
bequiet! Silent Base 800 Speedlink Omni VI  
CPUMotherboardGraphicsRAM
i5 3427U The Googs HD4000 4GB DDR3 
Hard DriveOSMonitorKeyboard
32GB Flash / 128GB SanDisk Extreme SD card ChromeOS / Ubuntu 14.04 12" 2560x1700 bad 
PowerCaseMouseAudio
not much  Aluminium  Trackpad it makes noise I think  
  hide details  
Reply
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