The solid Apple is not in the Mac's ROM at Cold start. The Apple logo can only appear when it is fetched in the first "blob" of software loaded from a 'magic' place on the boot drive, or re-run after a Restart. Then a whole lot of stuff is initialized, and the progress Bar moves part way across. After a cold start, seeing the solid Apple appear says your drive is not completely dead.
The next step requires a lot of files by name, so the File System is initialized, and the Boot Drive is Mounted. If the drive directory is damaged, the drive can not be Mounted, so your Mac begins one pass of Disk Utility Repair. This will take an additional about five minutes. During this process, the progress bar may be extended, and will grow by an additional amount not seen on a routine startup.
At the end of that process (which should not take more than about five minutes), it will attempt to Mount the drive again:
-- if the drive Mounts, boot-up continues.
-- if the drive cannot be Mounted, your Mac can do nothing more, so it powers off.
-- if the process stalls, this may indicate you have Bad Blocks on your Boot drive. The re-reading of Bad blocks can take a very long time (on the order of a quarter minute for each Bad Block).
in your case, you should attempt to repair the disk using the Disk Utility provided in Recovery. Run it repeatedly until it comes clean or is hopelessly stuck.
The solid Apple is not in the Mac's ROM at Cold start. The Apple logo can only appear when it is fetched in the first "blob" of software loaded from a 'magic' place on the boot drive, or re-run after a Restart. Then a whole lot of stuff is initialized, and the progress Bar moves part way across. After a cold start, seeing the solid Apple appear says your drive is not completely dead.
The next step requires a lot of files by name, so the File System is initialized, and the Boot Drive is Mounted. If the drive directory is damaged, the drive can not be Mounted, so your Mac begins one pass of Disk Utility Repair. This will take an additional about five minutes. During this process, the progress bar may be extended, and will grow by an additional amount not seen on a routine startup.
At the end of that process (which should not take more than about five minutes), it will attempt to Mount the drive again:
-- if the drive Mounts, boot-up continues.
-- if the drive cannot be Mounted, your Mac can do nothing more, so it powers off.
-- if the process stalls, this may indicate you have Bad Blocks on your Boot drive. The re-reading of Bad blocks can take a very long time (on the order of a quarter minute for each Bad Block).
in your case, you should attempt to repair the disk using the Disk Utility provided in Recovery. Run it repeatedly until it comes clean or is hopelessly stuck.
Hi AlliRat,
If Disk Utility reports no errors with your startup disk and this persists, reinstall macOS without losing your data via these steps: How to reinstall macOS - Apple Support. Do NOT erase your startup disk.
My 2010 MacBook Pro will not load. I get to apple screen with progress bar and it freezes at about 60%. Any recs? Thank you!
