Hi, My laptop is MacBook Pro 16-inch,2019. The system is Catalina 10.15.4. And I am using Samsung T7 use store my music stuff. However it was incredibly slow for me to load anything, I looked up and people are saying its because I have to format my T7 to MacOS Extended (Samsung T7 was originally ExFAT).
When you attach a storage disk to a Mac with the purpose of erasing or repartitioning it, you'll be presented with the option of selecting one of the three available partition maps: GUID Partition Map, Master Boot Record, and Apple Partition Map. In this article we will explain what a partition scheme is and which one to pick when formatting a drive.
What Is a Partition?
Mac OS Extended (HFS+) Apple File System (ApFS) Number of allocation blocks: 2 32 (4 billion) 2 63 (9 quintillion) File IDs: 32-bit: 64-bit: Maximum file size: 2 63 bytes: 2 63 bytes: Time stamp granularity: 1 second: 1 nanosecond: Copy-on-write: Crash-protected: journaled: File and Directory clones: Snapshots: Space sharing: Native encryption. This may be APFS, or it may be Mac OS Extended (Journaled) depending on how the drive is currently formatted and whether you using macOS High Sierra or an older version of the OS. Re: APFS vs Mac OS Extended (Journaled) In reply to Zeee. Nov 22, 2017 First, if you have not done a full backup of the internal HDD to an external, do it. HFS+ vs APFS Up until recently, HFS+ was the only file system supported by macOS and OS X. However, with the launch of the newest macOS High Sierra, Apple introduced a new drive type called Apple File System (APFS). HFS+ HFS+ was first introduced in 1998 with the launch of Mac OS 8.1 back when Apple made the switch to Intel-based processors.
The fixed-sized subset of a disk drive treated as an individual unit by the operating system (in our case macOS) is defined as a partition. On every drive there are multiple partitions, and for this you will need a partition table or partition map – maintained by the operating system – to detail the status of the partitions.
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GUID Partition Map
This is a standard for the layout of the partition table on a storage disk using globally unique identifiers (GUIDs). As part of the Unified Extensible Firmware Interface (UEFI) standard, GUID is a bootable standard for systems with EFI firmware such as macOS. Non-Intel Macs won't support this bootable standard, hence the only option available to them is the Apple Partition Map (APM).
Apple Partition Map
Used on disks formatted for use with 68k and PowerPC Macs, the Apple Partition Map is the scheme that defines how the data is organized. Starting with OS X Tiger, both APM and GUID partitions can be used for accessing volumes, but PowerPC-based Macs can only boot from APM disks. While Intel-based Macs generally boot from a GUID Partition Table, they are all able to start the operating system from APM and Master Boot Record (MBR) using the BIOS-Emulation called EFI-CSM.
Master Boot Record
Introduced by IBM in 1983 to support the 10MB hard disk, the Master Boot Record is a type of boot sector developed for use with IBM PC systems. It is currently used for Windows partitions formatted as MS-DOS (FAT) or ExFAT.
Choosing a Partition Map
Now you know which partitioning map is which, the next time you insert an external drive or want to partition the built-in storage disk of the Mac, it will be easier to choose between the available options.
When formatting or erasing a volume with Disk Utility, you'll see a format menu prompt asking you to choose from:
- Mac OS Extended (Journaled)
- Mac OS Extended (Journaled, Encrypted)
- Mac OS Extended (Case-sensitive, Journaled)
- Mac OS Extended (Case-sensitive, Journaled, Encrypted)
- MS-DOS (FAT)
- ExFAT
- APFS (macOS High Sierra's new file system)
- APFS (Encrypted)
- APFS (Case-sensitive)
- APFS (Case-sensitive, Encrypted).
Be aware that APFS is compatible only with macOS High Sierra and higher, so earlier versions of OS X or macOS won't mount an APFS volume. If you want maximum reach, Mac OS Extended (Journaled) is the right choice.
Below the file system format, the Disk Utility dialog box will list another contextual menu, the partition map scheme, which gives you another great tool to create targeted volumes. If you are looking to format a disk that will be shared with Windows users, the MBR scheme and MS-DOS (FAT) are the best choices. For drives used with Intel-based Macs only, the GUID Partition Map should the option to go for.
If you don't see the partition map scheme option, it is likely because Disk Utility doesn't list all volumes. This will prohibit Disk Utility from erasing the disk and show you an error message. To address this issue, you should click on the View button located in the top-left side of the Disk Utility dialog box and select 'Show All Volumes'. From that point on, Disk Utility will ask for your partition map preference, and the formatting process will be smoother.
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Apfs Or Mac Os Journaled
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Apple migrated its users to a new, modern file system called Apple File System alongside the release of macOS High Sierra 10.13 back in September of 2017, aiming to take advantage of flash and SSD storage drives, almost primarily because of the fact that all new Apple products use SSD as the storage disk.
This file system is specifically designed for Apple products but that doesn't necessarily mean that other files systems are bad, just that they serve other purposes. It was announced at Apple's Worldwide Developers Conference in 2016 as a replacement for the then default Hierarchical File System Plus (HFS+) file system. Apple released APFS (Apple File System) for mobile devices on March 27, 2017, along with the release of iOS 10.3.
Migrating from HFS to APFS
APFS replaces HFS+ (also known as Mac OS Extended), Apple's proprietary file system that had been used for decades and which builds on the original HFS, referred to as Mac OS Standard. Paste 2 2 4 0. HFS+ was designed in an era when floppies and hard drives were the best storage technologies. But since then a lot has changed: almost all Apple products use SSDs, and the next-generation storage technology is continually evolving.
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APFS Key Features: Encryption
The new APFS was developed with encryption at its core, likely due to Apple's requirements of using the same file system across various devices; consider multiple user keys within the file system on iPhone or iPad, or single-user keys on portable computers. According to Apple's documentation, APFS supports the following encryption models for each volume in a container:
- Unencrypted
- Single-key encryption
- Multi-key encryption with per-file keys for file data and a separate key for sensitive data.
Macbook pro apps 2019. The latter is particularly important for fully encrypted portable devices, but unlocking the iPhone or iPad gives the user access to additional keys and, as such, additional data.
Snapshots
By taking snapshots of the whole file system at a certain point in time, macOS essentially freezes a point in time that it can always revert back to. Every change made in the file system is then tracked and compared to that captured moment, and only new data takes up additional space. Essentially, it creates a read-only, independently mountable clone of the file system and saves the changes in a new location to preserve the integrity of that clone.
Space Efficiency
How many times have you struggled to optimize your Mac's storage by locating duplicate files and folders? The new file system now allows users to store data more efficiently, so if you copy a file to a new folder on the same computer, no data is actually duplicated. What happens instead is that the metadata is updated and the on-disk data is shared between locations. Changes in the ‘copy' will trigger new space allocation, called copy-on-write, which also ensures that updates to the file system are crash protected.
While you might wonder why someone would create a copy of the file on the same computer, the average user might be tempted to keep a copy under a different name, such as 'presentation-draft,' 'presentation-1,' 'presentation-final,' or 'presentation-typo' when working on a Keynote presentation. Users working with larger files – such as video editors – might also see APFS' space efficiency as a huge advantage.
Performance
Since APFS was developed for flash drives, it includes TRIM support. With this new file system Apple is also focusing on avoiding frustration among users caused by the annoying beach ball of doom. To do that, Apple uses I/O QoS (quality of service), which has the system arrange tasks into priorities, and obviously focuses on resolving the processes that are immediately important.
Apple applies a three-point protection method to ensure data integrity:
- All SSDs and hard drives used in Apple products use Error Correcting Code (ECC) to check for transmission errors, and corrects them.
- APFS uses the copy-on-write scheme.
- APFS uses the Fletcher's checksum algorithm for metadata operations.
The Negatives of APFS
Though there are a lot of benefits of using APFS, there are some drawbacks in making the switch from HFS+. While it is mandatory on Macs running High Sierra 10.13 or above – though the conversion process can be skipped with the right know how – it's worth being aware of what will change with the new file system. The negative points of APFS are:
- It doesn't provide checksums of user data.
- It doesn't take advantage of byte-addressable, non-volatile random-access memory.
- It doesn't support compression.
- It doesn't support deduplication.
HFS+
Silent wav file for 1 second music. With APFS Apple moved away from a file system it had used for the previous 30 years, HFS, which was introduced in 1985. Apple improved the original HFS in 1998 with HFS+ by adding support for much larger files and Unicode for naming files. It also utilized a full 32-bit allocation mapping table instead of HFS's 16-bits, increasing the allocation blocks to four billion. Despite its welcome benefits, the HFS+ lacks features that are considered highly important in modern file systems, including: data checksums, nanosecond timestamps, snapshots, support for dates beyond February 6, 2040, sparse file support, and better implementation of hard links.
Mac Os Extended Journaled Format
APFS aims to fix these core issues by using 64-bit inode numbers, therefore enabling better space allocation and supporting over nine quintillion files on a single volume. It also increases read-write speeds on both iOS and macOS devices, as well as the available space on mobiles due to the way that APFS calculates the available data.
NTFS
Developed by Microsoft, the NTFS (New Technology File System) is shipped as the default of the Windows NT family. While the maximum number of files matches that of HFS+, NTFS has several advantages over Apple's previous default file system: it supports file compression and data deduplication, among other features.
For some reason, interoperability between the NTFS, HFS+ and APFS file systems isn't smooth: Windows computers can only read NTFS formatted drives, while macOS can read an NTFS formatted hard drive but it cannot write to it. This gap is closed by third party drivers such as Paragon NTFS for Mac, which enables writing to an NTFS-formatted disk. However, Mac users usually refrain from using this file system unless they are working with a Windows machine.
Summing up
It's easy to understand how building a new file system was cheaper than spending time and money on maintaining and evolving a 30-year-old one. Yet despite the improvements, the new file system still has to mature, and Apple is apparently doing everything possible to speed the process up, especially since a file system can take a decade to mature. Still, APFS seems like a work in progress, because at this point it doesn't fully support HDDs and Fusion Drives. It also brings with it new problems, such as when partitioning a volume; the Time Machine's local snapshots feature doesn't allow partitioning unless these snapshots are disabled.
Should I Use Apfs Vs Journaled
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