I have a MacBook 2010 running High Sierra. I watch as my disk space disappear literally within hours. The MacBook then become unusable and I have to reboot with a power button. My disk space goes from 80gb free space according to Finder and About this Mac - Storage to 20gb or less free space. At 20gb it is unusable and I have to reboot.
All the space comes back after reboot and the process starts again. None of the solutions I searched for worked and this still happens daily.
I ran antivirus, malware and any utility that was recommended, even did a reinstall of OSX.
What keeps using the space and how do I stop it
Please help