I'm selling my MacBook, I restarted to Disk Utility and erased the drive and was going to reinstall MacOS but now I just getting a spinning globe on a grey screen that ends with the apple.com/support url and "-2100F" after it. Help please?
MacBook
Try using Internet Recovery Mode using Command + Option + R since it may allow you to access a more recent version of macOS. Older versions of macOS seem to have problems downloading these days.
Try connecting your MBAir directly to the router using an Ethernet cable for a more reliable connection which bypasses any WiFi issues. You will need to use either a Thunderbolt to Ethernet Adapter or an USB to Ethernet Adapter. The Thunderbolt adapter is recommended for a faster connection as USB is extremely slow.
Another option is to create a bootable macOS USB drive using another Mac.
Try connecting the laptop directly to your router using an Ethernet cable for a more reliable connection which eliminates any potential WiFi issues. You may need a Thunderbolt or USB to Ethernet Adapter.(Thunderbolt is preferred).
Or if you have access to another Mac you can create a bootable macOS USB installer:
Kennendepetris wrote:
I did this that's what I'm saying, it says 2100F error code..
It is some type of network issue. If you tried connecting the laptop directly to the router using an Ethernet cable and dongle, then try an SMC reset (follow instructions for the older non-T2 systems) and a PRAM reset (hold the PRAM reset for at least three chimes). You can also try rebooting your modem & router (give these devices at least 5 minutes to finish rebooting before attempting Internet Recovery Mode using Command + Option + R).
If you still have problems, then create a macOS USB installer. Try a macOS 10.11 El Capitan and a macOS 10.13 High Sierra USB installer, but you will need access to another Mac. Depending on the other Mac you may need to use the El Capitan installer (can be downloaded outside the App Store) which may need to be manually extracted from the .pkg installer file before being able to complete Apple's instructions for creating a USB installer. I can provide instructions if necessary to extract the installer from the .pkg file.
Or you can try revisiting @Kappy's earlier instructions to attempt to reinstall 10.7.
2011 Macbook air 2 disk erase
