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Depending on the age of the macbook there can be several issues. One I encounter a lot is that if the recovery mode wants to install El Capitan, it can't unles
by Shared404 6y ago
Depending on the age of the macbook there can be several issues.
One I encounter a lot is that if the recovery mode wants to install El Capitan, it can't unless you change the date in terminal, and then fight the internet/installation to get the install done before NTP screws it up.
- mjevans 6y agoKnowing that, could you block NTP (port 123) to the network segment / address pool leased to the laptops at a router level and work around the issue? You might even be able to define an DHCP address range for only apple devices.
- Shared404 6y agoProbably. I wound up just making a bootable usb installer and that fixed it. It's not a particularly hard problem to work around, just an example of something that can pop up while in mac's recovery mode.