Dave, Happy New Year to you as well.
External drives, outside of compatibility, are not OS version dependent. As long as they are formatted so that the iMac recognizes them, you're good. Either HFS+ or APFS should be fine for the formatting, but given you're using Sonoma at the moment, APFS is likely better.
You should have more than one external drive, for redundancy. If you're going to get a new drive, get two.
Far as your computer not recognizing the drive, it could be in your settings setup, an issue with a port or cable, or even the speed or waking time of the drive if it's different from that of your iMac. Hard to tell.
Copying files can be one folder at a time, sure, or a selection of several. You can also cable the drives together, which may be faster than routing the files through the computer, depending.
Hope this helps. On 1/1/25 2:33 PM, David J Brooks wrote:
I hope 2025 is much better tuna 2024 for those that had a crappy 2024 I have a one year old imac 24" running 14,7.1 that sometimes stops recognizing my older external drive. after waking up A facebook mac group suggested it may be due to the drive being older and formatted under 11,6,1 I dont know but it may be one of the reasons. I'm thinking I should get a newer external, format it for 14.7.1 and then copy all the files over to it from the older external. 1- what is the best format to use these days, they options don't look like they used too 2- what's the best way to copy, just drag and drop a folder at a time.?? Dave
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