White screen for about 30 seconds

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Level 1

8 points

White screen for about 30 seconds

So I recently decided to boot my iMac (late 2012) through a External SSD.

Currently my Mac HDD is running high Seirra, but on my External SSD I downloaded Mojave.

It is currently plugged in one of the USB 3 ports.

Whenever I restart the the iMac the white screen stays for about 30 seconds and then the apple logo turns on. Once the apple logo is up it only takes 15-25seconds to boot up.

I was just wondering if there is any way to cut that 30 seconds of white screen out. I didn't patrician the SSD, just erased and changed the formatting in order to boot up with it.

iMac, macOS Mojave (10.14), late 2012

Posted on Sep 25, 2018 8:09 PM

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Answer 1

rkaufmann87

Level 10

148,494 points

Sep 25, 2018 9:21 PM in response to kenei

First ensure the Startup Disk is set then reset the NVRAM.

By the way the definition of patrician is

a person of noble or high rank; aristocrat.

However, LOL I'm pretty sure you intended to write "partition".

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Answer 2

kenei Author

Level 1

8 points

Sep 26, 2018 4:21 AM in response to rkaufmann87

How would I go about doing that?

I was just assuming you would go into startup disk in setting, but my only options is to reset or target disk mode. Am I suppose to look for NVRAM specifically somewhere?

haha yeah, I guess I just typed close enough to know I thought it was spelled and then let autocorrect do its thing. I will check the start up disk.

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Answer 3

rkaufmann87

Level 10

148,494 points

Sep 26, 2018 5:57 AM in response to kenei

System Preferences - Startup Disk - Unlock the lock in the lower left corner of the window - select the startup disk -re-lock the lock - Exit Disk Utility

How to reset NVRAM on your Mac

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White screen for about 30 seconds

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