Slow boot

darkweather

macrumors regular
Original poster
Aug 8, 2013
202
54
After updating high sierra my mac's boot time is very very slow. before instal it was about 10-15 sec. now maybe 1 minute. what should i do? (i tried reset nvram)
 

EugW

macrumors G3
Jun 18, 2017
8,151
5,507
First boot or always? After the install, the first boot of High Sierra is very slow. After that it should be quite fast though (on an SSD).

My boot times are decent on all four of my High Sierra machines, including two very old ones. I haven't timed it, but it's nothing like the 1 minute you describe.
 

Themis

macrumors newbie
May 14, 2009
10
0
I confirm slow boot on Macbook Pro Retina 13" 2015. Sierra used to boot in secs. Now I have the boot bar stuck at 70% for some seconds before continuing. No errors on the console.
 

Yaboze

macrumors 6502a
May 31, 2007
738
168
The Garden State
First boot or always? After the install, the first boot of High Sierra is very slow. After that it should be quite fast though (on an SSD).

My boot times are decent on all four of my High Sierra machines, including two very old ones. I haven't timed it, but it's nothing like the 1 minute you describe.
My first reboot was very slow too, not 1 minute, but like 30-40 seconds on a SSD when it was less than half that before.

I have to reboot again and see if it speeds up.
 

darkweather

macrumors regular
Original poster
Aug 8, 2013
202
54
First boot or always? After the install, the first boot of High Sierra is very slow. After that it should be quite fast though (on an SSD).

My boot times are decent on all four of my High Sierra machines, including two very old ones. I haven't timed it, but it's nothing like the 1 minute you describe.
Always. I tried several times.
 

Seba95

macrumors newbie
Sep 26, 2017
3
1
I confirm slow boot on Macbook Pro Retina 13" 2015. Sierra used to boot in secs. Now I have the boot bar stuck at 70% for some seconds before continuing. No errors on the console.
I had the same problem than you on a Macbook Pro retina 13'' early 2015 what I did was using the First Aid on Disk Utility despite the first aid inability to find any problem it seems this somehow fixed my boot times. It takes around 16 seconds not those awful 44 seconds. I will retry to boot every now and then and see if it is permanently fixed.
 
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Themis

macrumors newbie
May 14, 2009
10
0
I had the same problem than you on a Macbook Pro retina 13'' early 2015 what I did was using the First Aid on Disk Utility despite the first aid inability to find any problem it seems this somehow fixed my boot times. It takes around 16 seconds not those awful 44 seconds. I will retry to boot every now and then and see if it is permanently fixed.
I have done the First Aid and re-run it second time. No problems found, but my boot time is still 40 secs from the "ding" sound. Before was something like 15 secs.
 

dreadlord

macrumors regular
Sep 15, 2016
151
211
Istanbul
I confirm slow boot on Macbook Pro Retina 13" 2015. Sierra used to boot in secs. Now I have the boot bar stuck at 70% for some seconds before continuing. No errors on the console.
I can confirm the exact same problem on my Early 2015 MacBook Pro Retina 13"
 

Seba95

macrumors newbie
Sep 26, 2017
3
1
I had done the First Aid and re-run it second time. No problems found, but my boot time is still 40 secs from the "ding" sound. Before was something like 15 secs.
I really don't know what you should do :/ I tried to boot several times since and is fast again it worked for me.
[doublepost=1506454665][/doublepost]I remember that after you boot when you log in after the installation there is a walktrough popup on the right superior corner off the screen about the new changes on HighSierra maybe closing that instead of hitting "seeing later" can fix those boot times since that pop up is a sort of scheduled task.
 

Themis

macrumors newbie
May 14, 2009
10
0
....and without any particular reason, my boot times are back to normal (15secs). I just tried another reboot before going to bed...:)
 

robeddie

Suspended
Jul 21, 2003
1,777
1,732
Atlanta
....and without any particular reason, my boot times are back to normal (15secs). I just tried another reboot before going to bed...:)
Let us know if it the quicker boot times remain. I've had the same slow boot problem on all the macs I've tried High Sierra on.
 

robeddie

Suspended
Jul 21, 2003
1,777
1,732
Atlanta
It was my reply to topicstarter :)
First off, it's a good idea to quote whomever you're replying to. But even now that you've clarified that, you're still not making yourself clear. Are you asking him to 'prove' that indeed he does have slow boot times? Like, you're suggesting he's lying and just trolling on high sierra?
 

robeddie

Suspended
Jul 21, 2003
1,777
1,732
Atlanta
Ahah, no :) I experience the same issue as him, as you and everyone else here. However, I did not tried Themis advice to First Aid the partition.
Gotcha. But another replyer indicated he tried the same disk utility trick and it did nothing.

Finally Themis chimed in that for no particular reason, the boot times on his system suddenly got much better. So my hope at this point is that it just takes High Sierra a good number of reboots, or days, and then it performs as expected when it comes to boot times.
 

m_emelchenkov

macrumors member
Mar 27, 2017
48
23
Gotcha. But another replyer indicated he tried the same disk utility trick and it did nothing. Finally Themis chimed in that for no particular reason, the boot times on his system suddenly got much better. So my hope at this point is that it just takes High Sierra a good number of reboots, or days, and then it performs as expected when it comes to boot times.
There is also a way to boot in verbose mode and look what console says. As for me, I do not really care a lot about boot times because I re-boot a machine only 1-2 times a month, so wait few more seconds is OK. But it is strange anyway, I did not have a such issue with any previous versions. Looks like a bug.
 

ImBuz

macrumors 6502
Oct 23, 2014
309
233
California
Just timed my Old iMac with High Sierra--From pressing restart to boot 36.40 seconds
From start of boot till screen--17 seconds
 

moneybags

macrumors newbie
Jul 16, 2013
6
0
I'm on a Late 2013 15-inch Retina MBP, 2.6 GHz, encrypted 1tb SSD, and I confirm that the problem exists. The boot was blazingly fast when I was using Sierra but now it's noticeably slower. I'm kinda happy that I'm not alone in this boat, I'm sure it's a bug and I hope a fix will be released eventually. Other than that, my impressions have been very positive, the computer works faster than with Sierra.

I've tried First Aid on my SSD but so far I've seen no improvement.
 

EugW

macrumors G3
Jun 18, 2017
8,151
5,507
Heh. Second boot on APFS spinning hard drive install is taking like 10 minutes. Yuck. I'll let it do its thing for a while and then try again.

2010 iMac Core i7 with 2 TB hard drive and 12 GB RAM.

BTW, I had split it into two volumes, so the finder says I have 4 TB worth of disk space (as expected for APFS).
 

BasicGreatGuy

macrumors G5
Sep 21, 2012
12,616
12,052
In the middle of several books.
Boot time on 2017 iMac 1TB SSD (with FileVault 2) is about 46 seconds after pressing restart, until log in ability. If I remember correctly, that is about what it was when running FileVault 2 Sierra on my late 2016 tbMBP.
 

EugW

macrumors G3
Jun 18, 2017
8,151
5,507
Heh. Second boot on APFS spinning hard drive install is taking like 10 minutes. Yuck. I'll let it do its thing for a while and then try again.

2010 iMac Core i7 with 2 TB hard drive and 12 GB RAM.

BTW, I had split it into two volumes, so the finder says I have 4 TB worth of disk space (as expected for APFS).
Boot never completed after 20 minutes. I note I had this happen once with my 2009 MacBook Pro install on HFS+, but I assumed this was just because it was an unsupported install.

Third and fourth boots on the AFPS HD iMac were fine. Fine for an HD. I timed the fifth boot and it was 50 seconds. This is a 2010 iMac Core i7 with 2 TB HD.

I just timed the boot for my 2017 iMac Core i7 with 1 TB PCIe SSD, and the boot takes 23 seconds.
 

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