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The conclusion is that they are the same. The poster is talking about my method 1) vs the TM "encrypt backups" option. I found this post somewhat helpful, but it does not answer question iii). Iii) Which approach is safe for Time Machine backups? I do not want to use the "encrypt backups" option in the time machine because I want to know what is going on. Ii) In particular, what does "Revertible: No" mean for Seagate1 (see below)? I) Is this the only difference between 1) and 2)? So it looks like the approach 2) is encrypting the entire empty partition. I know 1) was instantaneous and 2) took 100 sec roughly because I looked at the partial results. It stated encrypting it, at a rate of maybe 100MB/sec (also explained below).īelow is the output of "distill cs list". It encrypted it right away, as explained below.Ģ) In the Finder, I selected the second partition (Seagate2), then selected "Encrypt" from the Finder gear-like drop down menu. Then, from the "Erase" tab, I selected "Mac OS Extended (Journaled, Encrypted)".
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Using Disk Utility, I erased it and created two equal partitions (10GB each, the rest free space), both "Mac OS Extended (Journaled)".ġ) From Disk Utility, I selected the first partition (Seagate1 below). Make sure you do your research before formatting your drive, as it becomes more tedious to do so later on with data inside the drive.I am testing two methods of encrypting a new hard drive. It all comes down to your specific needs and what you’ll be using the drive for. There’s No Right Option!Īs you might have guessed, there’s no single right option when it comes to file formats.
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However, if you’re going to be reformatting an external drive, you may lean towards Mac OS Extended if you know you’re going to be using it with older Macs as well, or if you want to use it with Time Machine. If you’re looking to reformat your Mac’s internal drive (SSD), it may be better to choose APFS, especially if your macOS version supports it. It ultimately comes down to what you need to use your drive for. Although APFS is a faster and more reliable file format than Mac OS Extended, the latter is compatible with older Macs, Time Machine, Fusion drives, and more. There’s no clear winner in the APFS versus Mac OS Extended battle-both of the file formats have their advantages and disadvantages as we’ve discussed above. APFS vs Mac OS Extended: Which Should You Choose?
This is why you won’t find the option to format a drive to NTFS on a Mac, but you’ll find it on a Windows PC. Similarly, macOS can read newer Windows NTFS drives, but not write to them.
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It’s possible for Windows to read APFS and Mac OS Extended drives, but you require external software to do so. While APFS and Mac OS Extended are macOS specific, you should consider formatting your drive to ExFAT if you’re considering using your drive across Windows or Linux, as well as macOS.
There are two other file formats available in Disk Utility: ExFAT and MS-DOS FAT (FAT32). Other File Formats (exFAT and MS-DOS FAT) Mac OS Extended (Case-sensitive, Journaled, Encrypted): This format uses the Mac format, is case-sensitive to folder names, requires a password, and encrypts the partition.For example, Assignments and ASSIGNMENTS are two different folders. Mac OS Extended (Case-sensitive, Journaled): This uses the Mac format, but is case-sensitive to folder names.