trying to erase all on onld laptop, but macOS base System still shows 1.5GB used. How do I erase all of that?
iMac 21.5″, macOS 10.13
That's recovery partition and you need not erase or delete that. That contains recovery images aka the macOS installer. I would suggest you not to touch that.
jeanievTW Said:
"base system still shows memory use: trying to erase all on onld laptop, but macOS base System still shows 1.5GB used. How do I erase all of that?"
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Use of Recovery Mode:
If you want to erase it all, then do so in Recovery Mode
Mount the Hard Drive in Disk Utility:
While booted into Recovery Mode [Hold Down: command + R keys upon boot], go to Disk Utility > tap the Hard Drive, then tap the minus "-" button. Then, install it using a USB Installer. Use a 16GB Flash Drive for this. Go Here: How to Create a Bootable Installer for macOS - Apple Support
base system still shows memory use
