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<blockquote data-quote="bernard smith" data-source="post: 1922422" data-attributes="member: 401391">Wow,&nbsp; what a lot of info.&nbsp; Thanks so much for your time.Question... &nbsp;With regards to the external drives to clone the copies using Carbon Copy Cloner which I already use to make copies of photographic files on back up disks for security .. does it matter if the drives are spinning HDDs and not SSD?&nbsp; If they are OK to use as HDDs then is it ok to format them as macOS extended (journaled) or can they be changed to APFS?I have read that APFS is better suited to SSDs.Also you said that I should wait until I hear the chime when rebooting with the OPTION key held...I do not get a chime but get the Apple logo and then the progress bar going from left to right underneath it.Does this make a difference in how to boot up using the external copy drive?I have already made a bootable USB on a pen drive&nbsp; ... Sandisk Cruiser Blade 16 GB..&nbsp; will this be ok to use or do I need to make one once I have rebooted with the copy drive?CheersBernard</blockquote>

[QUOTE="bernard smith, post: 1922422, member: 401391"] Wow, what a lot of info. Thanks so much for your time. Question... With regards to the external drives to clone the copies using Carbon Copy Cloner which I already use to make copies of photographic files on back up disks for security .. does it matter if the drives are spinning HDDs and not SSD? If they are OK to use as HDDs then is it ok to format them as macOS extended (journaled) or can they be changed to APFS? I have read that APFS is better suited to SSDs. Also you said that I should wait until I hear the chime when rebooting with the OPTION key held... I do not get a chime but get the Apple logo and then the progress bar going from left to right underneath it. Does this make a difference in how to boot up using the external copy drive? I have already made a bootable USB on a pen drive ... Sandisk Cruiser Blade 16 GB.. will this be ok to use or do I need to make one once I have rebooted with the copy drive? Cheers Bernard [/QUOTE]

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