I encrypted my Time Machine portion and now it won't let me unmount or erase in Disk Utility. It was released in 1998 to replace HFS (Hierarchical File System, also known as Mac OS Standard or HFS Standard), which is the previous primary file system in Apple computers.Hi Guys I recently tried erasing my external hard drive because I need to partition it to hold additional information. The memory that is taken up is more than the available memory on my mac so I can't just copy the files out of my time machine put them on my mac, erase the time machine, and put it back on.(my mac has 256 gigs, only 68 gigs available, the disk has 1.2 TB, with 800 GB taken up.Mac OS Extended (Journaled) also known as HFS+, HFS Plus or HFS Extended, is actually a journaling file system released by Apple Inc. I have a lot of important information on this time machine.APFS becomes the default file system for both for SSDs (Solid State Drives) and flash drives. 2 USB C for Laptop Desktop Limited time offer, ends 08/31 Controller: SMI1.Two main advantages of HFS+ when compare to HFS are:Part 2: Which Is Better, APFS or Mac OS ExtendedAPFS file system was announced in June 2016 to replace HFS+ (also known as HFS Plus or Mac OS Extended) the latter was used on all Mac computers as the primary file system since 1998 to replace the previous HFS.Choose APFS for SSDs & Flash Storage DevicesWhen compared to Mac OS extended, APFS has been optimized a lot in terms of encryption, so it’s more suitable for flash and solid-state drive storage. Having a backup allows you to recover files that were deleted, or that were lost because the hard disk (or SSD) in your Mac needed to be erased or replaced.Your Mac has software thats already part of your Macs operating system.The storage management of APFS is more efficient than HFS+, resulting in helping users get additional free space. It creates new records, instead of overwriting the existing ones, in order to avoid metadata corruption the records may be corrupted because of system crash or other reasons. The checksums are used to ensure the integrity of metadata. APFS allows users to encrypt the full disk by using a single or multi-key so as to enhance the security. It’s able to create point-in-time snapshots for users. However, for users who run an older Mac (or a Windows operating system), they are not allowed to write to APFS-formatted drives.
The NVRAM ( Non-volatile Random-access Memory) can’t be used even for data storage. It gives no support to the Fusion drives. Compression is not allowed on an APFS drive. The APFS drive is generally more stable and reliable than the previous HFS+ or HFS drive. This helps to reduce storage space greatly when users copy files, make revisions, or do other things. The clones or multiple copies of the same file are allowed it will only store the changes as deltas. It gives support to the Fusion drives (which can’t be supported by APFS). As you know, the new APFS file system is not compatible with these old macOS versions. The HFS+ is a better choice than APFS on even current mechanical and hybrid hard drives.Besides, you should definitely choose Mac OS Extended when you reformat external hard drive Mac considering that it may be used on older Macs running El Capitan or earlier versions of macOS. You should keep it unchanged while you install the macOS or format external hard drive Mac. Till now, it’s still the default file system for both mechanical and hybrid hard drives. Choose Mac OS Extended Journaled for Mechanical Hard DisksMac OS Extended (HFS+) is the default file system for all Macs from 1998 to 2017, until the new APFS replace it. The nanosecond standard is not used for Timestamps. There’s no point-in-time snapshot for users. You can encrypt volumes and then access them from any version of Mac OS X and macOS. Which macOS are you running? Do you prepare to install macOS High Sierra or later? Are you formatting the internal disk or the external hard drive on your Mac? The APFS will be the new and future file system for Apple devices it’s likely that Apple will add more features to APFS and keep improving it for better security and user experience.Please ask yourself the following questions when you choose between APFS and Mac OS Extended: You can’t have concurrent access to the file system by a process.Note: It seems that Apple won’t spend much time in improving the HFS+ in the future. No checksum is used for metadata integrity or user data integrity. The support to Mac OS Extended will be stopped on February 6, 2040. Utilities Erase For Time Hine How To Recover DataAfter that, you should click on the Erase button in the right pane. Then, select the disk that you want to format from the left sidebar. After that, please select Show All Devices from the drop-down list.Please connect the external hard disk in advance and make sure it’s appeared on Mac. Although there are solutions to read Mac formatted drive on Windows or read a Windows formatted drive on Mac, formatting drives to exFAT is still a convenient thing and an economical choice.Note: Please start up from macOS Recovery and then choose Disk Utility in the macOS Utilities window if you really want to format the startup disk or startup volume.Please click on the View icon in the upper left corner of Disk Utility window. Are you preparing to use the disk on another Mac or even Windows computer?Click to tweet Bonus Tip: Choose exFAT for Hard Drives Used on Both Mac & WindowsThough the file system of main system drive on Mac is confined to APFS and Mac OS Extended, you can still consider exFAT (or the older FAT) when you format an external hard drive on Mac.How To Recover Data From RAW File System/RAW Partition/RAW Drive?The most obvious benefit of using exFAT is that it can work with both Windows and macOS computers (you have both read and write access to the exFAT drive). Of course, there are also many third-party tools you can download to format the disk on your Mac. Mac OS Extended (Case-sensitive, Journaled, Encrypted)Click here to know more about the differences between these file formats.That’s how to reformat a disk on Mac by using Disk Utility (the steps to reformat MacBook Pro are the same). Mac OS Extended (Case-sensitive, Journaled) Please click here to know how to format a disk for Windows computers in Disk Utility on Mac.The file formats available for you to choose are: Click on the blue Done button to close the window.You can now start to use the formatted disk. Click on the Security Options to choose how you'd like the drive to be formatted (optional). Make outlook the default email for macChoose the formatted disk/drive and click on the Scan button (enable Deep Scan to find more files). Define the file type that you want to recover you can select all types by enabling Recover Everything. Make sure the formatted drive is connected to your Mac. Launch the software right after installation. Follow the wizard to install it properly. Download Stellar Data Recovery for Mac. Click on the Recover button and select a safe place to store the recovered data.
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