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iqbal agung

System uptime in nano seconds


Hello guys ,

i've install a yosemite niresh 10.10.1 to my laptop

acer espire e1-471

intel core i3-2348

ram 4gb


and i try to update to yosemite 10.10.2 ,i download from apple web,not mac appstore

after installing for about 5 minutes,it reboot and show the error "system uptime in nano seconds 1217255383"


i try some bootflag but it still wont boot


please help ,thanks

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