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Formatting New External Hard Drive

 3 years ago
source link: https://forums.macrumors.com/threads/formatting-new-external-hard-drive.2276317/
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Formatting New External Hard Drive

emac82

macrumors 6502
Original poster
Feb 17, 2007 NB, Canada
I just got the new MBA M1, to replace my 2011 MBP (which is Mac OS Journaled).

My current external drive I use for my Time Machine backup is the same, with a partition also for FAT 32 (in case I had to put files onto Windows).

I have a new 2 TB external drive. What's the best way to partition it? Should it be converted to APFS for the Time Machine backup?

I'd like to partition it 3 ways...1TB for Time Machine, 500GB Mac OS Journaled (sorry, I'm rusty so I don't know if APFS automatically means Mac OS Journaled nowadays)...then I'd like to do 500GB as exFAT - for files that might have to go on a windows computer (unlikely, but precaution).

Does this make sense? Is there any reason I shouldn't go to APFS?

Fishrrman

macrumors Core
Feb 20, 2009 20,621 7,345
For time machine, use HFS+ (Mac OS extended with journaling enabled, GUID partition format).

In fact, for ALL platter-based hard drives (no matter what you use them for), I still recommend HFS+.

I would advise AGAINST putting any PC compatible partition (exfat, etc.) onto a drive that is being used for a tm backup, or for any other "important" Mac file storage.

If you need a drive with which to share with PCs, get a standalone drive to be used ONLY for that purpose.

Don't "mix up" Mac/PC formats on a single drive.
Fewer potential for problems that way...

emac82

macrumors 6502
Original poster
Feb 17, 2007 NB, Canada
For time machine, use HFS+ (Mac OS extended with journaling enabled, GUID partition format).

In fact, for ALL platter-based hard drives (no matter what you use them for), I still recommend HFS+.

I would advise AGAINST putting any PC compatible partition (exfat, etc.) onto a drive that is being used for a tm backup, or for any other "important" Mac file storage.

If you need a drive with which to share with PCs, get a standalone drive to be used ONLY for that purpose.

Don't "mix up" Mac/PC formats on a single drive.
Fewer potential for problems that way...
Okay - So I should not convert to APFS? Is HFS+ the non-APFS format?

Edit to Add - all my external drives (including the internal on my 2011 MBP, are SSD. So they aren't platter.

Boyd01

Moderator
Staff member
Feb 21, 2012 5,215 2,436 New Jersey Pine Barrens
I would advise AGAINST putting any PC compatible partition (exfat, etc.) onto a drive that is being used for a tm backup, or for any other "important" Mac file storage.
I agree, and would go one step farther not not partition or store ANYTHING else on your backup disk. A backup is useless if you can't be confident in its integrity and using it for something else increases the risk of problems. Get separate disks for all your needs, they are cheap. If your Windows needs are modest, maybe just use a flash drive?

If your data is important, also consider adding at least one other backup disk. Personally I use Time Machine, a bootable Carbon Copy Clone on an external SSD and BackBlaze backups to the cloud.

Boyd01

Moderator
Staff member
Feb 21, 2012 5,215 2,436 New Jersey Pine Barrens
Edit to Add - all my external drives (including the internal on my 2011 MBP, are SSD. So they aren't platter.
Personally, I format my external SSD's with APFS. I really can't see any downside to that.

emac82

macrumors 6502
Original poster
Feb 17, 2007 NB, Canada
Personally, I format my external SSD's with APFS. I really can't see any downside to that.
Will the new MBA still work fine with HDD's that are formatted with HFS+ (like my older backup drives)

Boyd01

Moderator
Staff member
Feb 21, 2012 5,215 2,436 New Jersey Pine Barrens
Don't see why it wouldn't, but since I don't have an M1 Mac that's just an assumption.

ght56

macrumors 6502a
Aug 31, 2020
I would personally do a single HFS+ (Mac OS Extended) partition on that hard drive for Time Machine and use a separate disk for other activities.

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