Confused about how to format my media

[camelia]

Hello Forum

In a Mac with spinning disk I have never format my media before creating an USB botable installer

But According with 9to5mac.com:

Do I have to format the media before make a bootable USB installer as Mac OS External (Journaled)
is it because my Mac comes with SSD?

Or it is OK if I don't format my media??

Please advice

Thanks
Camelia

 

[Apple_Robert]

My original post was wrong. NoBoMac is correct.

 

[NoBoMac]

Don't think there is a need to format a thumb drive to create an USB drive, as I seem to recall that the first thing the "create install media" command does is erase and re-format the drive.

 

[Apple_Robert]

Don't think there is a need to format a thumb drive to create an USB drive, as I seem to recall that the first thing the "create install media" command does is erase and re-format the drive.

You are right, NoBo. Thanks for the correction. I forgot the command includes the formatting.

 

[camelia]

Don't think there is a need to format a thumb drive to create an USB drive, as I seem to recall that the first thing the "create install media" command does is erase and re-format the drive.

But if

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume

/createinstallmedia erase and re-format the USB stick...
why I have to to format the media before make a bootable USB installer as Mac OS External (Journaled)?


Thanks
Camelia

 

[camelia]

Hello its me again

I am still confused

Remember English is not my primary language

Thanks
Camelia

 

[Apple_Robert]

But if

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume

/createinstallmedia erase and re-format the USB stick...
why I have to to format the media before make a bootable USB installer as Mac OS External (Journaled)?


Thanks
Camelia

Using that terminal command, you don’t need to format your USB ahead of time to Extended Journaled. The terminal command will take care of that for you.

 

[camelia]

Using that terminal command, you don’t need to format your USB ahead of time to Extended Journaled. The terminal command will take care of that for you.

Understood

Thank you
Camelia