kernel panic


macrumors newbie
Original poster
Feb 8, 2015
Hi there,

Gout troubles with my external drives. Lacie d2 USB 3 Thunderbolt series ( each 3 Tb) on my Imac 27" medio 2011. Yosemite is completely up to date. Until a few days ago everything was working just fine. ( I use the thunderbolt connection ) But then ... as always I dragged my external drives to trash ( to switch them off for saving electricity ;-) )... I switched them off ... KERNEL PANIC. If drives are on they work perfectly. When I shut them off... kernel panic. Yesterday a friend came by with his brand-new Macbook Pro and so we attached the drives to his computer. Guess what? Same problem. How do I solve this? Luckily I've got a backup on my Time Capsule of all my data but the Time Capsule is 2 Tb large and I'm not so far away of more data.
Thanx for thinking about it. Hope I can solve this.


macrumors 603
Feb 19, 2008
The Finger Lakes Region
OS X is NOT like Windows! OS X is based on NeXTSTEP which is based on BSD Unix. So externals have to be mounted to the desktop of a user so you have to dismount the drive before disconnecting it or powering it off. You can either drag the drive to the Trash Can or highlight the drive and press the keyboard keys command button+e to eject the highlighted drive.

OS X will always warn you to do the drive ejection correctly if you don't eject the drive first.


macrumors newbie
Original poster
Feb 8, 2015
AAAAgh,windows. Do you wan't me to drop dead? Imac, Time Capsule, 3 iPhones, iPad. 1 windows laptop èç!àç!))))Ouch. They don't even know how to count the version names, guess how that system works !! Needs maintenance every week. Only used by our dissabled daughter for Youtube and playing DVD. :( Always, sh.. ):eek:

To the point : Ofcourse you're right. I wrote it down in my first post, third line. Also posted it in apple forum : somebody suggests I should contact Lacie. I did it a few hours ago. But it's very strange that the two drives both at the same time begon to give troubles. They're both bought in september 2013 and are in warranty till 2016 but something tells me ( I hope not ) that, since the last update of osx, the problems started. (I don't turn the computer much off, so I can't say it for sure) Compatibilityproblem?????


macrumors P6
Feb 20, 2009

You're not the only one with this problem.

Over at there seems to be others reporting the same situation.

I suggest you browse the Yosemite discussion there, to see what others are saying...


macrumors newbie
Feb 17, 2015
Kernel panic!!!!!!! Please help

Please help me. I have a big trouble on my mac mid 2012 OS Mountain Lion. Every time I use my mac while charging it, the screen suddenly gets frozen and restart himself. Sometimes I have this message:

Interval Since Last Panic Report:  11855 sec
Panics Since Last Report:          1
Anonymous UUID:                    D7F86B57-5BFD-245F-D31E-B93A005E5D4D

Tue Feb 17 15:01:46 2015
panic(cpu 2 caller 0xffffff80072b8c44): Kernel trap at 0xffffff7f07c03a1f, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0xffffff7f07c03a1f, CR3: 0x0000000009647000, CR4: 0x00000000001606e0
RAX: 0x0000000000000000, RBX: 0xffffff8012009400, RCX: 0x0000000000000c00, RDX: 0xffffff8012018f00
RSP: 0xffffff808649ba80, RBP: 0xffffff808649bb30, RSI: 0x0000000000000000, RDI: 0xffffff8012016c00
R8:  0x0000000000000000, R9:  0x0000000000000001, R10: 0xffffff8007657530, R11: 0xffffff8012272e80
R12: 0xffffff8012009400, R13: 0xffffff8012016c00, R14: 0xffffff80718ba000, R15: 0x0000000000000000
RFL: 0x0000000000010246, RIP: 0xffffff7f07c03a1f, CS:  0x0000000000000008, SS:  0x0000000000000010
Fault CR2: 0xffffff7f07c03a1f, Error code: 0x0000000000000010, Fault CPU: 0x2

Backtrace (CPU 2), Frame : Return Address
0xffffff808649b720 : 0xffffff800721d6d6 
0xffffff808649b790 : 0xffffff80072b8c44 
0xffffff808649b960 : 0xffffff80072cf04d 
0xffffff808649b980 : 0xffffff7f07c03a1f 
0xffffff808649bb30 : 0xffffff7f87c062e6 
0xffffff808649bbd0 : 0xffffff7f87a64550 
0xffffff808649bc60 : 0xffffff7f87a6591d 
0xffffff808649bd40 : 0xffffff8007651ad6 
0xffffff808649bda0 : 0xffffff7f87a7f883 
0xffffff808649be60 : 0xffffff7f87a71d37 
0xffffff808649bee0 : 0xffffff7f87b758f3 
0xffffff808649bf40 : 0xffffff7f87b7282c 
0xffffff808649bf60 : 0xffffff800723e37e 
0xffffff808649bfb0 : 0xffffff80072b34b7 
      Kernel Extensions in backtrace:[E67F44F7-A4BD-3CD1-A01B-B37D783CE613]@0xffffff7f87a62000->0xffffff7f87abffff

BSD process name corresponding to current thread: kernel_task

Mac OS version:

Kernel version:
Darwin Kernel Version 12.6.0: Wed Dec 17 19:11:40 PST 2014; root:xnu-2050.48.15~1/RELEASE_X86_64
Kernel UUID: 2C802015-932B-3BDF-8ACF-DA75BE3F81AD
Kernel slide:     0x0000000007000000
Kernel text base: 0xffffff8007200000
System model name: MacBookPro9,2 (Mac-6F01561E16C75D06)

System uptime in nanoseconds: 12980419334201
last loaded kext at 3025676211874:	1.8.4 (addr 0xffffff7f88f24000, size 229376)
last unloaded kext at 332089780713:	1.8.1 (addr 0xffffff7f88f16000, size 57344)
loaded kexts:	1.8.4	4.1.7f5	1.60	1.0.0	100.13.14	2.4.7fc4	1.0.0d1	124	4.1.7f5	1.0.0	7.0.0	3.4.5	2.0.3d0	3.0	3.5.12	2.4.7fc4	1.0.11d1	1.6.3	3.0.3d1	8.1.6	8.1.6	170.3.5	1.1.11	237.1	237.1	320.15	1.0.0d1	1.0.0d1	34	3.5.6	404	2.3.5	635.4.0	1.4.3	3.6.2b4	4.9.9	2.6.6	621.4.6	615.20.17	635.4.0	161.0.0	1.8	1.5	1.8	1.9	1.8	1.7	214.0.0	4.0.39	2.1	214.0.0	10.0.6	2.4.7fc4	1.9.2fc7	1.12	86.0.4	4.1.7f5	4.1.7f5	1.0.0	2.2.5	1.0	5.4.1d13	3.1.5d4	2.4.7fc4	2.4.7fc4	74.18	3.4.5	1.0.4	2.3.7	1.0.11d1	2.3.7	237.3	2.5.0	2.5.0	1.3.2	623.4.0	621.4.6	621.4.0	3.5.6	1.7	1.7.1	1.7.1	2.5.5	3.5.6	1.0.2b1	1.9.2	2.7.7	630.4.4	4.5.5	2.5.1	530.5	3.0	635.4.0	2.0	2.0	1.8.1	1.1	220.4	1.0.0d1	7	345	1.8	28.21	1.8	2.8	1.4	1.0
Model: MacBookPro9,2, BootROM MBP91.00D3.B08, 2 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 2.2f44
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (
Bluetooth: Version 4.1.7f5 15113, 3 service, 13 devices, 3 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: TOSHIBA MK5075GSX, 500.11 GB
Serial ATA Device: MATSHITADVD-R   UJ-8A8
USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1d100000 / 2
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0x1d180000 / 3
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0252, 0x1d183000 / 6
USB Device: BRCM20702 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x1d181000 / 5
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821d, 0x1d181300 / 8
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x1d182000 / 4
USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1a100000 / 2
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0x1a110000 / 3
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