Can not reinstall osx el caption

[Poland583]

I have a early imac I bought from someone on crails list and I played aroud on it for awhile and wanted to reset it (it was my frist apple) so I tried wiping the disk clean well if worked and now I can't install the os z el caption from the control option r thing I hit install new os I click on the drive wamt it to save to the it sas sign into play store I put in name and password then it says unavable right now and has done this for weeks idk what to do please help this was going to be my sins computer

 

[reukiodo]

Can you reinstall with just CMD-R recovery?

 

[Poland583]

Can you reinstall with just CMD-R recovery?

Idk what CMD-R recovery is. When it pools up it goes straight to the os x utilites screen without pushing any buttons and I haVA it hooked to ethera net. The only options I have restore from time machine backup I have no backup reinstall OS X get help online and Disk Utility when I go to the reinstall OS X it gives me couple different drive to choose from but when I click one and hit install it says enter my app store username and password and then it says temperaly unavailable

 

[reukiodo]

Hold CMD and R keys while powering on your Mac. This should take you to recovery that attempts to reinstall the MacOS version which shipped with your Mac. Once you have a working OS installed, you can upgrade after.

 

[Poland583]

No it asks me to sign into play store and then says it's temporarily unavailable
[doublepost=1564613049][/doublepost]Also when the comand r and the comand opton r both take to install elation but it won't let me. thank you so much for your help so far but I'm totally lost

 

[Poland583]

Idk if this will help anything

 

[Poland583]

This is the message

 

[reukiodo]

The HD partition setup seems strange. Did you set those partitions?

Which iMac model is this?