Before this, it normally got to just over half way, then went to a black screen then loaded El Capitan. Macbook air stuck on apple logo and spinning wheel, macbook stuck on loading screen after login, mac progress bar stuck at 100 catalina, mac progress bar stu. Follow the following steps to solve the problem.1.
Published at 08: 02h in performance, three trend micro columns If a simple white screen appears when the Mac starts, then some of its hardware or software may have failed. While complaints started to pour in right after High Sierra. Rather the progress bar gets stuck (mostly at 100), due to which the system startup process never completes and the login screen never shows up.
addhen restarted, and after the Clover bootloader working as normal, it went to the black screen with the Apple logo and a loading bar. Macbook pro mid 2012 stuck on loading screen. Basically, users report that after upgrading to High Sierra, their Macbook/iMac will turn on and load the progress bar, but not boot up. The importing process took quite a while, and I'm not sure if it even brought back my emails. To reduce the stress on my SSD, I copied the Applications, Library, Pictures, Movies, Documents and Downloads folder onto the SSD, then replacing them with links to the folders I moved to the HDD as per this tutorial: Migration Assistant put all the files that were on my Time Machine drive (from my iMac I had before) on my SSD. So I recently had my hackintosh running well with El Capitan, with an SSD and HDD. Building a CustoMac Hackintosh: Buyer's Guide