Cannot boot after apfs conversion. I restarted in recovery mode, unmoun...

Cannot boot after apfs conversion. I restarted in recovery mode, unmounted my drive (seems many folks run into issues with not unmounting, so make sure to do this if you're attempting the same thing), then successfully converted to APFS. Disk Utility can't erase it and the only option there is APFS. With a new file system such as the APFS, you need your Mac to run well. 13 USB drive today, went into Disk Utility and was 'seemingly' succesful in converting to APFS. Choose your boot volume [the external boot drive]. 1 Click on the Edit menu Click on Convert to APFS After converting to APFS, my Mac will not boot into the SSD, Internet Recovery, or a USB drive. There are online references to methods of preserving data. Apr 29, 2018 · 5 According to this and this article the post-install conversion to APFS should work in Recovery Mode: Boot the Mac into Recovery Mode by holding down the Command and R keys until you see the macOS Utilities screen. Continuing to rely on the USB after setup is a common mistake and leads to confusion when the system fails to boot independently. This is an encrypted volume. It won't let me select it to boot from. Set your format back to Mac OS Extended (Journaled) and Apply. After many betas not being able to convert my SSD to APFS, I booted from a 10. Run First Aid and fails immediately with exit code 8 After installation completes, OpenCore must be installed to the internal drive’s EFI partition. The update told me I needed a APFS disk in order to install the update. I intended to replace the internal HDD with my Samsung EVO 750 ssd; but found that I can try it as an external startup disk via usb3 port. I tried to boot from the clone, but Clover see only the window installation, so I cannot boot in MacOS. Rebooted and now won't boot. Here was what I did this weekend. Jun 27, 2017 · Here's how to upgrade your Mac's boot drive to APFS if you didn't do it in the High Sierra installation process. Nov 3, 2018 · Technically, APFS conversion doesn't have any hardware restriction. Now it won't boot from the Mac HD. efi. I made a clone of my boot disk, then formatted the partition to APFS and copied the system in the new partition. Open Disk utility. It was slow and I did not use it for several months. , still the same. However, I personally wouldn’t trust that at all. Apr 16, 2025 · Checking with apfs tools showed that APFS structure is broken and it looks like it was overwritten with some MBR, see dump Next I found this question on StackExchange and followed research Unable to boot on my APFS partition I couldn't find NXSB superblock that looked similar to expected one, just some random NXSB strings on the disk. Jun 12, 2022 · The TM restore appeared to be successful. 5 and was still using HFS+ and I needed to patch the OS. MacBook Pro unable to boot after converting OS Drive to APFS The machine is running macOS Mojave 10. I get the "Running bless to place boot files failed" also. Feb 4, 2014 · I don't that this saves time vs. Oct 15, 2017 · One method to prevent an automatic conversion when installing High Sierra is to redirect the install onto an external drive first. Oct 4, 2017 · Boot back into Recovery Mode, open Disk Utility, select Show All Devices from the View menu bar option. I tried loading a fresh OS from recovery (not internet recovery) and it said it needs to update firmware. Jun 17, 2018 · Won't boot up after APFS conversion, my solution I have a mac mini late 2012 running Sierra. Select the Container under your APFS Media and click the Erase button. When This Windows-Created USB Method Will Not Work This method will not bypass hardware incompatibility. Let’s figure out the issues and corresponding solutions. the erase option as the install seems to take longer than an install on a empty disk, likely because of the conversion. ) From the external drive this installation can then be cloned back to the main internal boot drive (preferably after the boot drive is erased Jan 14, 2026 · You can’t convert external drive to APFS due to “Convert to APFS greyed out” or not showing, not available. (Or a traditional HDD on larger desktop machines and laptops that were modified to have these drives in addition to SSDs. Aug 16, 2024 · Installing the operating system on an APFS-formatted drive guarantees that your Mac can take full advantage of the features and optimizations that APFS provides. The iMyMac PowerMyMac is the most recommended program that can help keep your Mac running smoothly. This step erases all data and fixes partition errors, giving a fresh start for the installer to run smoothly. Jan 11, 2020 · what I did to convert: diskutil apfs convert disk1 diskutil apfs createContainer disk1 disk2 from Disk Utility's Edit menu: "Convert to APFS" ( unmounted the target volume first too ) used a Carbon Copy Cloner and cloned Catalina's bootable volume on external hard disk to the target fusion drive from OSX Catalina Install Disc I'm really stuck now. . Jan 16, 2024 · As promised, the APFS is a more secure file system. Booted back off the USB image, went into Disk Utility again, sure enough mounts with the PW without issue. So, why not complement it with a Mac cleaner that can keep your Mac running smoothly at all times. I also had another SSD with a bootable Mountain Lion OS on it and it also did not allow a Disk Utility Edit->Convert to APFS whereas it would for an encrypted HFS+ non-boot SSD (both USB). Nov 28, 2011 · It was not working conversion option was grayed. Nov 24, 2024 · Formatting the disk to APFS makes it compatible with macOS installation, as APFS allows for a preboot volume needed to boot. 14. I reinstalled Clover, check the content in particular APFS. Jun 7, 2016 · In either of these two ways, do you have any idea what happens to the drive? I was led to believe by Apple that if the APFS conversion on Disk Utility would leave the data intact (given that the conversion would have worked, I guess). Many people have discussed the "Convert to APFS" option not available or greyed out issue in different forums.