New iMac slow startup? Clean install will fix.

toddngina

macrumors member
Original poster
Feb 13, 2008
95
0
I had the same problem some others had with the slow startup of the new iMac. It would give me 40 sec to a min of white screen before seeing an Apple logo. It wouldn't even boot on my initial startup, I had to force shut it down and retry. So I did a erased the harddrive and did a clean install - problem fixed! Full bootup now takes 25 sec or so.

If your iMac is taking longer than 5-6 seconds to show the Apple logo on the white screen on startup, you might want to consider doing this before you get too far into moving your files over! I wonder if they put a bad batch of software on in the factory - fortunately all is right with the recovery discs.
 

Leon575

macrumors member
Jul 12, 2009
63
0
Thank you for the tip.
I will do this when I get my new iMac next week.
 

littlelarry33

macrumors member
Aug 4, 2007
79
0
I had this same problem and it took about a minute 30 to boot so I re-installed Snow Leopard and all is good its about 20 sec now!
 

VicX

macrumors member
Oct 8, 2009
71
0
California
Thank you for the tip.
I will do this when I get my new iMac next week.
wo.. u will get exactly the same :apple: equipments i will. touch 16G and iMac 27'' 3.06GHz, still waiting for the new iMac..

i'm wondering how to reinstall Mac OS, just transfered from PC to mac
 

cathul

macrumors member
May 5, 2008
54
0
Anyone tried to set up a new startup disk after first bootup?
To some in a german mac forum it did help with the long boot-up time.
 

eelpout

macrumors regular
Oct 30, 2007
236
6
Silicon Valley
Has anyone done a verbose boot to figure out what is actually going on when it's slow?? Reinstalling, while effective, seems like the sledgehammer approach. :D
 

chinesealbumart

macrumors newbie
Oct 26, 2009
11
0
Singapore
Just want to check if this step is still necessary

Getting my new Mac tomorrow so wonder if this is the very first thing I need to do ..

Also how do you do a clean install ? (Sorry.. first time using a Mac) :)
 

Kronie

macrumors 6502a
Dec 4, 2008
929
0
I always do a fresh install on any new computer. I have had too many machines (mostly from Dell) that have had botched factory installs.
 

C64

macrumors 65816
Sep 3, 2008
1,228
219
If it's booting slowly, try this first:

Go to System Preferences > Startup Disk and select your internal HD.
 

coronas

macrumors newbie
Oct 29, 2009
10
0
I had the same issue and was gonna do a clean install of Snow Leopard. I inserted the SL disk to boot from it, but it did not work. In the end I had to force the disk out of the computer by connecting a USB mouse and left click at startup. After that for some reason my iMac boots in 25 sec without reinstalling. Weird :/
 

brn2ski00

macrumors 68020
Aug 16, 2007
2,211
0
MA
I'd have to think that Apple will release a fix for this in a pending update. I have definitely noticed that my 21.5" doesn't boot up fast enough, but I do not plan on reinstalling the OS - too much of a PIA to get everything back on.
 

53x12

macrumors 68000
Feb 16, 2009
1,544
2
I'd have to think that Apple will release a fix for this in a pending update. I have definitely noticed that my 21.5" doesn't boot up fast enough, but I do not plan on reinstalling the OS - too much of a PIA to get everything back on.
Quicker and better running OS >>> than any inconvenience of reinstalling OS and applications.
 

killerrobot

macrumors 68020
Jun 7, 2007
2,218
0
127.0.0.1
Mine seems to take a while to show the Apple screen - maybe 25-30 seconds. But then Snow Leopard is up about 5-10 seconds later. Overall it seems like a normal boot time.
 

chinesealbumart

macrumors newbie
Oct 26, 2009
11
0
Singapore
Happy to report that my initial start up (first time when boot up) was around 50-60 seconds.

After I went through the start up process, now it starts at around 30 seconds or less.. changing the START UP->HARD DISK makes minor difference in the start up.

I am happy..... 30 seconds is good for me :)
 

Loudwater

macrumors regular
Oct 12, 2007
113
0
Vancouver, BC
If it's booting slowly, try this first:

Go to System Preferences > Startup Disk and select your internal HD.
This worked for mine (21.5'', ATI Radeon 4670) as well. Thanks!
Before, out of the box, the starting time was about 1 minute. Now cut into half, 25-30 seconds.
 

Sun Baked

macrumors G5
May 19, 2002
14,874
57
this worked great for me - no idea why though :confused:
If you don't select a startup disk, the x bootloader doesn't immediately start, enters a default mode when it cannot find the selected boot volume.

Basically, has to hunt for a drive with the startup volume on it, then load the x bootloader.

While it should only take an extra 10-15 secs, it might try a couple few times to give the selected drive a chance to mount.
 

d12south

macrumors newbie
Nov 19, 2008
2
0
This works perfectly. I selected the internal HD and now my mac is booting in aprox 20 seconds.. before it was taking 55 seconds.

THANKS
 

MikeJB

macrumors newbie
Nov 15, 2009
1
0
If it's booting slowly, try this first:

Go to System Preferences > Startup Disk and select your internal HD.
It worked!

When I first got my new 21.5 imac it booted up in 58 secs. Then after installing 10.6.2 it took around 2 mins 40 secs.

After altering system preferences (as above) it's just 25 secs!