Only seeing macOS Base System

jiri37 wrote:

I have tried to reinstall my mac since it has been playing with us for some time.

i backed up all files and erased both hard drives (macOS and macOS files). Tried to reinstall macOS but got an error that mentioned “index or indexing”.

Now I cannot see anything else than macOS Base System. Cannot reinstall the mac since no HD is available. Can anyone help? Thank you!

https://discussions.apple.com/content/attachment/65817256-3881-4a59-b60f-6cb727c1ce89

The "macOS Base System" is the Recovery Partition.

From Internet Recovery—DiskUtility>View>Show All Devices>

Erase/format/initialize the parent Drive

How to erase a disk for Mac - https://support.apple.com/en-us/HT208496

You can reinstall the macOS from Internet Recovery

How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904

How to erase a disk for Mac - Apple Support