hard drive nearly full up

[niphotos]

Hard drive nearly full up , yet i have hardly anything on my imac , this is the second time this has happened and last time i had to reformat and reinstall from my time machine back up , apple support not as helpful this time around and want me to take it to the shop ( imac out of warranty ) has anybody any precise details as to how to reformat the imac , any help appreciated !! Thanks
PS see attached screenshot ..

 

[Cory Cooper]

Hello and welcome.

-Which version of OS X - macOS Sierra?
-Do you have any pro apps installed such as Logic Pro X or Final Cut Pro?
-Is Time Machine enabled, and if so, do you have an external drive selected for the backups?
-Do you have any third-party utilities like MacKeeper/CleanMyMac installed?

C

 

[niphotos]

Hi Cory , using Sierra 10.12.2 , time machine on and all backed up , no third party apps or mac keeper /clean my mac on , just Affinity and any ones from the app store Thanks

 

[Cory Cooper]

OK. You could download and install OmniDiskSweeper to see what is taking up all of the hard drive space. DO NOT use the built-in delete function to remove any files - please let us know what they are first. We can then tell you if it is safe to delete them.

C

 

[niphotos]

Well i took the bull by the horns and done a restore on my imac , now with 952 gb free instead of 132 gb free , the wisdom of the internet and using a time machine backup !!...problem solved
http//www.niphotos.com