Macbook Pro: MacOSX 10.14.5: error: Cross Check: FSroot... would not boot..help

more217 wrote:

Thanks for the reply...You are correct. I had to Erase and reinstall the OSX etc. using CC.

My Question to all mac experts, is WHY did the fsRoot got corrupted in the first place. I had only 1.23GB space left on the SSD, out of 499GB when this happened.

Is this a bug in the OSX 10.14.5 ? or is the ScanDisk SSD going bad ?

You do not need to be an expert to realize you corrupted yourself by choking it to the brink of failure—

SSD like to have 20-25% free storage space to run efficiently and trouble free.

Mechanical HDD can get by with a little less 10-15% free storage space

You left your computer with no room to preform it's task— it seems it did the best it could do, to keep from a total shut down.

reference:

How to free up storage space on your Mac - Apple Support 

https://support.apple.com/en-us/HT206996

User tip: "Other and What Can I Do About It ?"

https://discussions.apple.com/docs/DOC-5142

Thin local snapshots :

ref:   https://eclecticlight.co/2020/04/09/where-did-all-that-free-space-go-on-my-apfs-disk/

Try something like OmniDiskSweeper for a GUI to get a good look at itemized file size and location:

OmniDiskSweeper http://www.omnigroup.com/more

Hey more217,

We've got your back, and want to help look into this issue of your Mac not booting up together. Let's have you take a look at this article: If your Mac starts up to an Apple logo or progress bar

It looks like you have already complete some of these steps listed in the article, let's have you complete any steps that you haven't already done.

Cheers.

The APFS file system is corrupt and since First Aid is unable to repair it you will need to erase the whole physical drive as GUID partition and APFS (top option) before reinstalling macOS or restoring from your backup. Here are instructions on how to erase the physical drive:

https://support.apple.com/en-us/HT208496

If you don't have a backup, then it will be much harder trying to transfer your data using the command line from Recovery Mode before you erase the drive.