how to do a disk defragment on a mac book

Never trust CNET

Never trust CNET

Never trust CNET

And what is nonconsenual data, sounds rather unhealthy if you ask me.

The fastest way is to erase the drive and reparition (10 minutes or so) but the data will be lost so move it first,

The clicking noise is a sign of oncoming drive failure, don't rely on this drive.

You want to format and repartition, and that's all.

I just can't stop laughing , What a humor 😀

The politician fit perfectly his Mac 's diagnose 😀 , i wish he posts more comments and teach us .. its rare to see people that smart .

PC is Personal Computer it does not bind to any specific hardware types. MAC is certainly a PC, if Mac handles file system different to windows then I can understand.

DO yourself a favor and organize your files by size and see how many files of yours aren't getting defragmented (non ssd) if you don't have many you shouldn't be posting in this support forum.

No,

Carbonite has well documented issues with iPhoto and iTunes databases, frankly it's junk.

Get an external drive and back up to that.