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Slow boot
- Thread starter darkweather
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How many times have you tried?
By the 3rd or 4th boot, some of the slow boots have resolved for some people.
I tried almost 5, 6+ times, but I think I'm giving up, either way I never turn the mac off
Mine stops for several seconds at apfs_mount_update, then finishes booting normally until the login screen.
...I wonder what this line means as well:
*IOAHCIBlockStorageDriver:: DetermineDeviceFeatures - !!!!! WARNING !!!!! - Force Data Set Management is set
...I wonder what this line means as well:
*IOAHCIBlockStorageDriver:: DetermineDeviceFeatures - !!!!! WARNING !!!!! - Force Data Set Management is set
There used to be a good way to clean the kextcaches and set the startup disk and improve this slow new OS boot time dramatically. It is harder to do now but you could still try it or there is a geeky utility that does it for you. You can read about it here. I've done it and it doesn't seem to hurt anything to try. Maybe even try running first aid on your disk in disk utility. Last resort clear the startup and login items to see if it helps any.
http://www.ubermediahd.com/blog/?p=223
http://www.ubermediahd.com/blog/?p=223
Code:
sudo chown root:admin /
Code:
chown: /: Operation not permitted
Hi guys!
This fixed my slow boot after installing High Sierra. I disabled trim using this command
Somehow it still shows that trim is enabled in system report but my boot time is as fast as in Sierra.
This fixed my slow boot after installing High Sierra. I disabled trim using this command
Code:
sudo trimforce disableSomehow it still shows that trim is enabled in system report but my boot time is as fast as in Sierra.
I have a stock Apple SSD. Doing that wouldn't be prudent for me, and I also don't suggest others do that. It is best to make a bug report to Apple.
The more people that report this, the better chance we have of Apple fixing it. I don't think turning off TRIM is the way to go, especially if Apple doesn't get enough reports etc. That would mean you have to keep TRIM off indefinitely which would not be a good thing, in my opinion. Better to deal with the extra 20 or so seconds with the OS properly handling the SSD, than turning off TRIM, just to save those seconds. I don't think the trade off it worth it. You and others may disagree and that is fine.
I have the same issue, (actually the only noticeable issue so far on high Sierra). it takes around 30 or more seconds at first boot. Used to be 9-13 secs on all previous OS. Seems not as bad on a restart.
You are right, but considering TRIM is such an easy thing to turn off and then back on, it might be worthwhile if more people can confirm (or deny) if TRIM factors into their slow boot issue. At least then we can narrow things down, and possiby submit additional useful information in our Apple bug reports.
yes! it worked for me. Boot is as fast as sierra. But "trim support" status is "no" now.
it's funny that my system report showed trim support as yes even after I turned it off with the command. But now I just turned trim back on and my boot speed is still as fast as Sierra.
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in my case with 960 evo nvme I can't disable trim
it seems that the sudo trim force disable command hits only traditional ssd, but no flash ssd
If you use the USB installer method you can install High Sierra on APFS, at least for a clean install (which is what I did).
BTW, I redid the install since the last install was with a patched installer for my unsupported machine but it added a support partition that this 2010 iMac doesn’t need as it is fully supported. So this time I used the regular unpatched installer and it also allowed me to install on APFS for the HD.
The only caveat is that it doesn’t install the recovery partition for some reason.
Boot times this time around have been normal.
I made trim enable again, and boot slow down again. so it is clear that something is wrong about trim. I will diasable it.
Same issue here. 2012 MBP 13" + 3rd Party SSD. Slow boot times.
edit: I just tried to disable Trim, but there was no change in boot time and after logging in, it says that trim is enabled. I tried it again, but trim remains enabled.
edit 2: I used Disk Sensei to disable Trim and it worked. Boot times are quick now.
edit: I just tried to disable Trim, but there was no change in boot time and after logging in, it says that trim is enabled. I tried it again, but trim remains enabled.
edit 2: I used Disk Sensei to disable Trim and it worked. Boot times are quick now.
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