Install macOS Sierra on new HDD

New install

Hey guys,

I'm upgrading my existing 500GB HDD to a 1TB HDD on my Late 2011 MBP.

My idea is to install macOS Sierra on the new HDD, transfer data using the in-built 'Migration assistant', then remove the existing HDD and insert the new one.

So, I inserted the new HDD in '2.5" SATA External Case' and connected it as USB drive.

(Image source: Google)

I already have macOS Sierra installer downloaded.

When I double click on it, the installer starts. After a couple of confirmations, I get the following error message.

In some blog, I read that this can be because of wrong system date/time.

In my case, the system date/time are correct.

What can be going wrong here?

The version of the installer is 12.0.49 whereas the one installed on my MBP is 10.12.4

Can this be the reason?

I tried to install the macOS via recovery route. But, after downloading the installer, it got stuck.

Probably, the HDD, connected as external drive, lost connection. I can try that route again. But, it’ll take more than 2 hours for the whole process. So, tried installing using the installer that I downloaded earlier.

Also, I want to do a clean install on the new HDD. So, I’d not like to go for any cloning methods.

Regards,

Babloo