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Check startup disk setting if boot times seem slow System
Shortly after getting my MacBook, the power-on boot became drastically slower, with over half of a minute going by before the Apple Logo appeared. I tried many of the suggested fixes, including checking the boot drive for errors, cleaning out caches, looking for duplicate fonts, and fixing permissions. Nothing worked.

I had assumed, because I had only a single hard disk, that it would be, by default, set as the startup Disk in the Startup Disk System Preferences panel. As it turns out, that was not the case. The MacBook's startup disk had somehow been set to Network Startup. So the MacBook would not boot from the hard drive until the network boot attempt timed out. To fix this problem, I selected System Preferences » Startup Disk, and chose my hard disk.

Note: There are multiple causes for slow boot-up and this is just one of them, so this fix, like each of the others, will work in only a minority of cases.
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Check startup disk setting if boot times seem slow
Authored by: Anonymous on May 12, '09 10:12:48AM
Another case of slow booting can be when the boot partition is set incorrectly; for example, after cloning then swapping the boot disk. The original drive might have had the system on partition #2; while the clone might have it on partition #5.

The above hint should fix this case as well.

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Check startup disk setting if boot times seem slow
Authored by: p99 on Mar 18, '10 03:38:58PM

THANKS!!!

After swapping harddisks between my old and new macbook I encountered very sloooow startup of bootX (about 30-40 secs before the grey apple logo appeared)
Been looking all over the web to find what could be the problem and finally found this post.

The solution above was also the cure in my situation!



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Check startup disk setting if boot times seem slow
Authored by: skim325 on May 15, '09 03:54:04PM

Resetting PRAM (by holding CMD-OPTION-P-R on chime) also resets the the startup disk back to the default installed hard drive inside the computer. Just wait for the second chime and then you can let go of the buttons. This is another way to resolve your issue, and speed up boot times as well.

The only one drawback with resetting the PRAM, is that it also deletes some log files contained in console like the kernel panic logs (I think), which may prevent you from troubleshooting your computer if you're having other issues as well.



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