Apfs Firmware Update
- I saw in your first post that you couldn't get Internet Recovery to work. That's because Internet Recovery was not available until 2011 models, and some 2010 Macs got access to that with a firmware update. 2009 iMac is too old for Internet Recovery - it can't work.
- In the Disk Utility Edit menu, select “Convert to APFS.” (It will be dimmed if you didn’t properly select the boot volume.) Disk Utility Edit Convert to APFS 5.
JF Mezei <jfmezei..@vaxination.ca> wrote:I think you need to go away and read/view the APFS presentation at last
> With a totally new way to update files being used for APFS with
> snapshots etc, does this mean that a system update/upgrade could be done
> on a running system with a new version of files being created while the
> running system still has files opened pointing to the old version?
year's WWDC again. It would also help if you stop obsessing about APFS
being some magic that will completely change the way things work.
New features of APFS have little to do with software updates.
The only way snapshots figure in software updates would be to save the
state of the file system so an update can be rolled back if something
goes wrong while it is being installed, or if the user decides they
don't like the result and want to revert to the prior state, or to allow
mounting the prior state (read only) for comparison.
Clones might help updates by reducing the amount of data needing to be
copied when a file is patched (assuming the patch is replacing a block
of data the same size, which is probably rare).
Unix file systems (including HFS+) can already do that.
> (with old versions then deleted at reboot since the system would then
> boot with most recent version of files) ?
The problem with OS updates is nothing to do with how files are
replaced, but with coordinating all parts of the system to use the same
versions of a related set of files. The easiest way to ensure that is to
restart.
Existing databases can already do that without file system help, e.g.
> In a different vein, if file1 is some indexed database file, and
> process1 updates records in it while process2 accesses records, will
> process2 continue to access its 'snapshot' of the file at the time it
> opened it, or would it get updated records (written in different blocks) ?
SQLite in WAL mode: if reader A starts a transaction, then writer B
starts a transaction, makes changes and commits, reader A continues to
see the old state of the database until its transaction ends. The
changes are visible to reader A when it starts its next transaction.
The clone feature in APFS is somewhat similar but would require the
database software to close and reopen the database to see changes done
in a clone which then replaced the original file.
This would certainly be faster, as it avoids double writing new/updated
database pages (initially to the WAL file, then later to the main
database at a checkpoint).
Supporting this would require a new journalling method and updated
database software, but old journalling methods would still need to be
supported for other file systems, therefore it increases the complexity
of cross platform database engines for a feature only available on a
limited number of systems. That makes it less likely to be supported by
cross-platform database engines like SQLite, unless Apple did a
platform-specific branch.
Snapshots have nothing to do with opening files. They are for saving the
> Or put it another way, would an application specify, when it opens a
> file, whether it wants a static snapshot at time of opening versus
> dynamic accxess to the file as it is being modified by others ?
state of entire volumes.
--
David Empson
dem..@actrix.gen.nz
Dec 21, 2020 • Filed to: Answer Hard Drive Problems • Proven solutions
However, even if a Mac as the firmware update which include APFS, this does not automatically mean that versions of macOS (OS X) prior to High Sierra would be able to access APFS volumes. Apple would have to provide an APFS software update for older versions of macOS (OS X).
APFS has greatly improved sharing, data security, and the speed of reading and writing data in Mac drives. Virtualbox osx guest. But this doesn't make it immune from various data loss scenarios like accidental deletion, system crashes and issues, corrupt files, and much more.
If you have lost some of the data on your Mac, you might be looking for a solution that will allow you to easily and quickly recover the missing data without being too costly. In this guide, we will provide you with a free APFS data recovery solution and share with you how it works.
Part 1: What is APFS?
APFS stands for Apple File System and is the new file system introduced with macOS 10.13 High Sierra. As we mentioned before, it is different in so many aspects to the HFS (Hierarchical File System) that all Mac systems used in the past.
For example, APFS has a faster read-and-write speed compared with HFS. For example, in the HFS, it would take minutes before you would see the folder sizes under 'File > Get Info', but in the new APFS, the calculation takes only seconds.
For you to better understand APFS, its features are listed as followed:
- Its 'Clones' feature allows users to copy files instantaneously without using additional space on the APFS drive.
- 'Snapshot' function enables you to back up the system of a particular time.
- The file and its metadata will be encrypted by using AES-XTS and AES-CBC modes.
- The 'Space-Sharing' allows readers to share the underlying free space on the APFS drive, which makes it possible to grow and shrink according to users' demand.
Part 2: Reasons for Data Loss from APFS Drive
Despite the high functionality of APFS, data loss happens on an APFS volume or drive occasionally. Some of the most common reasons why you may lose data on your APFS drive are listed below: Is netflix app available for macbook.
- Disk corruption
- Malware and viruses attack
- System failures
- OS Problems or bugs
- Accidental deletion
Part 3: Is There Any Free APFS Data Recovery Tool?
There is a free APFS data recovery application that can effectively scan the APFS fusion drive and easily recover the missing data. This tool is Wondershare Recoverit for Mac. You must wonder about its benefits when coming to recover APFS volume. So here list it features relating to APFS recovery and its advanced functions-Video Repair.
Wondershare Recoverit - Restore Your APFS Files in Three Steps
- MacOS 11(Big Sur), MacOS 10.14(Mojave), MacOS 10.15 (Catalina), and other Mac systems are supported.
- Even encrypted APFS files can be regained in three steps using a convenient filter function.
- No matter the data was lost through accidental deletion, formatting, lost partition, system crash, or virus/malware attack, it can be recovered through Recoverit.
- 100MB data recovery is free of charge.
- It provides a one-stop solution to repair corrupted videos.
Part 4: How to Recover Data from APFS Drive?
Here's how you can use Recoverit to recover data from an APFS volume on your Mac.
Step 1: Download and install Recoverit for Mac on your computer and then double-click on the program's icon on your computer to run it. In the main window, select the drive that contains the missing APFS data and click 'Start'.
Mac Apfs Firmware Update
Step 2: Recoverit will then begin a full advanced scan of the selected drive for all the lost, formatted, or deleted data on it. This scanning process can take some time depending on the size of the files on that drive. But you can use the 'Pause' or 'Stop' button to stop the scanning process when you see the missing data.
Step 3: Once the scan is complete, you can preview the files by clicking on the file. Then, click 'Recover' to recover the file.
Final Words
Apfs Needs Firmware Update
The above-described reasons may lead to APFS data loss. However, there is no need to worry about it. Here you have the free and powerful software-Wondershare Recoverit to retrieve your data. You can download Recoverit on your Mac computer. Let's start our data recovery journey!
Free Recover Data
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