High Sierra Installation stopped on PRO

The way MacOS Install generally proceeds is this:

a chunk of new software (actually a minimal system of the Incoming software) is ADDED to your boot drive. This does not replace you current system.

The start Disk is set to the newly copied minimal system

A restart occurs, booting to the new System.

If the Install gets in trouble at this point, your old system is still intact, it just needs to be re-specifed.

All you need to do is get the startup disk set back to the old system.

You can boot to recovery (Command-R), then quit recovery, and Startup Disk will be activated as you quit, and you can re-specify your Startup Disk.

You can Alt/Option Boot and select your regular Startup disk and tell it to proceed, Once Mac OS is active, be sure to use:

System preferences > Startup Disk ...

... to set the startup disk normally again.

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if you would like help on making the Install work, please post the exact model MacBook Pro, including year and screen size, or the MacBook Pro 17,2 designation.

Did you try to set the "startup Disk" on exit from Recovery?

The minimal MacOS is named "MacOS Base System" and your previous System should have it regular name or be accessible by choosing "EFI Boot" or similar name, if present.

If there is now no MacOS to run, you may have to initiate the Install again.

if you are having this much trouble, the issue could be a failing drive.

Maybe a visit to the genius bar or an Apple-Authorized Service Provider would get you a firm diagnosis, so you would know how to proceed.

This has happened to me now too.

I’ve tried all troubleshooting (power off + command + r; power off + d) and it’s saying no diagnostic problems and there is no os to select.

Please help

I’ve tried it all.

I’ve even tried reinstalling and it keeps getting stuck.

It can’t find any time machine backups.

I’ve tried everything that I’ve found so far in troub