Pathfinder For Mac Wont Start After Update To High Sierra

Install V.8.1 normal over 8.2.2. No Problems on High Sierra. Thousands and thousands of files to start re-syncing at their new locations.

Try a Safe Boot. Otherwise, you might to reinstall macOS. ---------- Shut down your Mac. Use the power button if you need to. Now start it with the Shift key held down. This will start it into Safe Mode, with all extensions turned off. Safe Mode is slow to start, so give it time, it's checking a bunch of tasks.

If it works OK in Safe Mode, restart normally. If it works now, you're done. If the problem returns after restart, you might have an extension conflict. Turn off all extensions via System Preferences. To isolate which extension is at fault, turn on one extension at a time, restarting in between, until you find the bad one. Try a Safe Boot.

Otherwise, you might to reinstall macOS. ---------- Shut down your Mac. Use the power button if you need to. Now start it with the Shift key held down.

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This will start it into Safe Mode, with all extensions turned off. Safe Mode is slow to start, so give it time, it's checking a bunch of tasks. If it works OK in Safe Mode, restart normally. If it works now, you're done. If the problem returns after restart, you might have an extension conflict. Turn off all extensions via System Preferences. To isolate which extension is at fault, turn on one extension at a time, restarting in between, until you find the bad one.

Did you try to use the Disk Utility available through the OS X Recovery startup, and attempt to repair the hard drive in the computer? There may be an issue whereby the drive could have defects, if so, it would need replacement. A third-party or non-approved replacement hard drive version may not have the sensor; as such the cooling fan could run full and have no upper limit.

The sensor sets the limit. Depending on the model iMac, opening the unit to replace or inspect inside may be troublesome.

A few are easier for DIY part replacement than others. The iFixit repair guides for Mac can be helpful pre-view the level of difficulty and steps involved, if repair is needed.

• iMac Intel repair guides - iFixit: • • A visit to an Apple store with Genius with appointment set ahead to assure you of a time reservation, may help to check for causes of the actual problem. Good luck & happy computing!

Hi - I had this problem too - my computer became frozen after the user password was inputted. I restarted in Recovery ( from Apple site: ) • Reboot the Mac and hold down Command+R to boot into Recovery, or hold down OPTION. • Select “Recovery HD” at the boot menu.

• At the Mac OS X Utilities screen, select “Disk Utility” I then selected Disk First Aid on all drives - all appeared OK. I then ran it on the Recovery partition and it prompted me saying (in layman's terms) the Recovery Partition was too small and it needed adjusting to become the correct size.

All this happened automatically under Disk First Aid. I assume OS Sierra didn't fit on the allocated space.

My iMac is a late 2015 model, if it's any help. Anyway, after that it rebooted fine and I logged in OK, too. I had this problem on a client's Macbook Pro, client interrupted the High Sierra upgrade by powering off. After that the Macbook Pro would halt at the Apple Logo with about 1/5 of the progress bar. Boot into Recovery gave some file system text top left and Apple Logo (grey). Macbook would not boot into Target mode.