Set the "Restore from" source box directly to your extracted InstallESD.dmg file, then click . Method B: Using Windows (Etcher / TransMac)
If your Mac has a blank hard drive or a corrupted operating system, you cannot run the standard installer app. You must flash the InstallESD.dmg onto a USB flash drive (minimum 8 GB) to create a bootable installation stick. Method 1: Using Disk Utility (On Older macOS Versions) mac lion os x 10.7 - installesd.dmg download
"This copy of the Install Mac OS X Lion application can't be verified" Set the "Restore from" source box directly to