Installing High Sierra on an SSD

[krawfo]

I have a mid-2011 iMac that I'm getting ready to donate. It has a 250gb SSD and a 1 TB HDD. Somehow OSX is on the HDD and I want to boot from the SSD but I don't think it's formatted properly. I thought I needed to format the SSD with APFS but am not sure how to accomplish this. Here's what disk utility looks like:

If I select Crucial and then ERASE, there is no option for APFS. See below:

If I select 256SSD then my options are as below:

Which option do I want?
Thanks in advance for your help.

 

[Masso]

I think you are looking for this;

• Click the Erase button in the toolbar, then enter the requested details:
  • Name: Macintosh HD
  • Format: APFS or Mac OS Extended (Journaled), as recommended by Disk Utility
• Click Erase. However, if you see an Erase Volume Group button, click that button instead.
  
  

For more info: https://support.apple.com/en-us/HT208496

 

[pippox0]

Easy way is clone High Sierra from Hdd to SSD with Carbon Copy Cloner or SuperDisk!

Choose SSD at booting time by pressing Option Key.

Hint : High Sierra can boot also from HFS+ partition

 

[krawfo]

Thanks Masso and Pippox for the help. I guess since I'm trying to make the SSD bootable then the APFS option is what I need. I considered cloning the old drive but since I'm donating the machine I didn't want my old data on it.

 

[krawfo]

All good. APFS format and SSD booted up.
Thanks again.