Formatting of external drive for both Mac and Windows backup

levmc

macrumors member
Original poster
Jan 18, 2019
92
2
If you want to back up both Mac and Windows, is there a type of formatting for that?
Or is there only a formatting where you can write and read with one but only read with the other?
 

matreya

macrumors 65816
Nov 14, 2009
1,286
127
I wouldn't trust ExFAT format as far as I could spit it... if you accidentally unmount the drive, you can lose all your data.

Also, I wouldn't rely on a single hard drive to backup both Mac and Windows systems. I'd use dedicated hard drives, and they are cheap as chips these days.
 

dimzen

macrumors regular
Nov 11, 2011
135
18
Denmark
I would too use different drives, and even more the one place for a backups.
If all you backup's are in the same house, and it burn down, you have no backup.. :)

But if you need a drive to work on Mac and Windows, I think ExFax is the best way, I havn't had trouble with it :)
 
Last edited:

Fishrrman

macrumors P6
Feb 20, 2009
17,481
5,676
I'd do this with TWO drives.

Drive 1 -- Mac backup. I prefer and recommend either CarbonCopyCloner or SuperDuper to create bootable cloned backups. I DO NOT recommend Time Machine, ever.

Drive 2 -- Windows backup. I don't use bootcamp nor do I have Windows installed to "boot natively". But if you do, I've heard that there's something called "WinClone" that can clone a Windows installation to a backup drive. That's what I'd suggest.

I -WOULD NOT- recommend keeping both backups on one drive.
 
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alphaod

macrumors Core
Feb 9, 2008
22,161
1,166
NYC
For Windows you'll likely need to use NTFS for your backup drive. For Mac you'll definitely need HFS+ or AFPS for Time Machine.

While there is software drivers you can install that allows Windows to read and write HFS+ and Mac to read and write NTFS, you cannot use the default backup applications to backup to these drives, only third party software.


That said I have a NAS setup that my MacBook Pro and my Surface Pro both can backup to the same drive, and the drive is formatted Ext3…