Apfs not bootable. Can I assume you are trying to take an...
Apfs not bootable. Can I assume you are trying to take an image created from a bootable JHFS+ volume and restore to a APFS volume and still be bootable? If the answer is yes, then the result will not boot. But when I open Disk Utility, only four formatting options appear, all APFS variants (see attached image). I have a USB that was previously formatted as MacOS Extended, and I reformatted it to APFS. I tried to follow all the instructions I could find. You can not erase and unmount the volume your home folder is on, so to format Macintosh HD to APFS you have to boot into Recovery Mode (or Internet recovery mode), use another Mac, or use a bootable backup drive. This post rounds up common issues you may encounter when you can't create bootable USB installers on Mac in Terminal and OpenCore Legacy Patcher. Instead, use Boot Camp Assistant to remove the partition from your Mac. That is not accurate when creating a bootable installer. 2), then used Disk Utility to format it as APFS. Is it no longer possible to format external drives as APFS BootROM Support: If you have a machine that supports High Sierra natively, you MUST ensure you have the latest version of the system's BootROM installed. 1. Shows up in Disk Utility but doesnt show up on boot list (holding down Option on startup), not sure whats going on here. - pretty sure CCC restores are only bootable when they're on the root directory of the disk, not a partition. Any Idea why the APFS usb drive is not accepted as bootable install media, and what I can do at this point? Cheers! Formatting the disk to APFS makes it compatible with macOS installation, as APFS allows for a preboot volume needed to boot. Catalina users: The Legacy Bootable Copy Assistant is not applicable. PommePourMoi wrote: I purchased a SanDisk 128GB USB-C thumb drive. When I initiate a createinstallmedia with the proper agruments I get this error: APFS disks may not be used as bootable install media. - there's a tool I recently discovered (forget the name rn) that allows you to boot . APFS not bootable. You may need to erase the who drive. System Recovery OEM (system recovery disk) is a part of the R-Drive Image OEM kit to run the software from startup (bootable) disk (s) and restore a failed computer system to factory (assembler) setup. Unable to create bootable drive for MacBook Air M1 Unable to create a bootable Big Sur on a SanDisk Extreme 1TB. Does it matter that my external drive is a Tos After converting the external SSD to APFS it doesn't boot anymore - my Mac can't see it as bootable and doesn't show it when booting with holding Option key. Download TransMac - Open Mac APFS/HFS+/HFS format disk drives, flash drives, CD/DVD/Blu-ray media, HD floppies, dmg, dmgpart, sparsebundle and sparseimage files. I converted the TimeMachine volume of to APFS as it showed up under the Edit Menu in Disk Utility. 2 can back up and make bootable HFS+ clones on external hard discs from APFS - formatted internal SSDs. This means you are only able to use this external bootable drive on the computer that created it. Here's how to split your Mac hard drive into multiple partitions or volumes so that you can run more than one OS on your Mac, or divide up your Mac so different users can have their own space. Restore from Bootable Recovery Drive Note: I had a full image backup separate from this recovery drive to allow for alternate approaches in the event the following steps did not work as expected. I know from times past the cmdline DiskUtils has way more options than the GUI. A bootable installer is different. I'm not sure El Capitan can just erase an APFS Container (partition) as I've never tried it. Double-check before proceeding. This article explains about file systems and provides instruction to format a drive on Windows and Mac. I now wish to reformat the drive as exFAT. and disabled XhciPortLimit, you can boot macOS 11. Have bootable USB drive with Big Sur installed. Need to boot your M-series Mac with an external drive? It's not as easy as it used to be, as it likely requires you purchase new hardware. This partition should exist adjacent to the Windows partition. If you try to use createinstallmedia and point to a volume that is formatted as APFS, you will get an error that the filesystem cannot be APFS. Encountering a situation where the APFS format option is missing from Disk Utility can be frustrating. Nov 15, 2021 · Can't make APFS bootable? I'm getting an error saying APFS disks may not be used as a bootable media. Mojave and all newer macOS versions can recognize the APFS format as a valid boot format. I am a bit confused on the concept of external USB bootable installation: So I will get an USB drive, erase it to GUID/HFS+, run the createinstallmedia to kind of make the external USB a bootable Monterey installation, then when installing, I install Monterey into the USB drive? Since El Capitan does not understand the new drive layout used by macOS 10. The Legacy Bootable Copy Assistant will offer some choices for how to proceed with the task depending on how the General concept Add a new partition (note: not a new APFS volume, but a new partition / APFS container) with a slightly larger size than the desired amount of space to be added to Boot Camp, via Disk Utility, which will losslessly shrink the AFPS macOS container to do so. ) In the Disk Utility> Edit menu> select “Convert to APFS". Jan 13, 2026 · Read to know the causes and solutions for the 'APFS disks may not be used as bootable install media' error. Recovery Mode. The normal backup works fine in Sequoia. 3. Note: APFS-formatted drives cannot be used to create USB installers. All-in-One Dual-Boot Guide for all scenarios (from Sierra 10. Converting manually seems to "unbless" the drive, so the Mac does not think it's a bootable drive. A little different experience this time but ultimately same thing, converted to APFS without issue, this time showed bootable but when restarting didn't boot. Note: Formatting your disk will erase all data on it, so we recommend backing up any important data before proceedi Apr 16, 2025 · It looks like my main APFS Container got broken by some MBR record after installing OpenCore Legacy Patcher and rebooting few times. I've now converted an external USB drive and my wife's non SDD iMac to APFS and made them bootable. Drives that will be bootable are formatted during the process of installing the operating system (ie, Windows or macOS). It can feel odd because APFS is the normal format for modern macOS system drives. Fix Mac that won't boot from USB. Make your disk cloning and data migration tasks simpler with user-friendly, fast and reliable cloning software trusted by IT professionals and home users. Up to 4000 files FOR FREE from a chosen directory. A drive can be used on any type of computer - PC or Mac. DMDE is a powerful tool for data searching, editing, and recovery on disks. Secondly, it is not always possible to boot into other systems that are not the ones that created the clone. Boot the machine with the bootable, verified, external recovery drive. I've mostly asked chatgpt for help, used recovery mode and found out that /etc/fstab looked wrong (missing the UUID names). So far, so good. In a previous post it was related that full installer for 20B29 applied to an existing Big Sur beta did not result in an install/upgrade entry in the open core boot menu after the first or subsequent reboots. I believe the CCC warning is related to the Legacy Bootable feature. dmg etc. 12 up to Monterey 12) (Should also work for Ventura or later, not tested) (should work with Windows 8 and earlier versions of macOS but they're untested) When you have Windows installed first and don't want to lose all your data When yo Note: If you’re trying to install the latest MacOS on a 2009 and later Apple computer, follow the MacOS internet recovery guide instead. Installation Process Now that you've finished setting up OpenCore, you're finally able to boot, main things to keep in mind: Enable BIOS settings optimal for macOS Read up on the OpenCore Multiboot Guide (opens new window) as well as Setting up LauncherOption (opens new window) Mainly relevant for those running a single drive for multiple OSes And a copy of the General Troubleshooting page It is not recommended to format hard disks (i. APFS disks cannot be used as bootable install media because they do not support the traditional boot process. Here's how to upgrade your Mac's boot drive to APFS if you didn't do it in the High Sierra installation process. If the destination is an APFS container (or an APFS volume inside one), the tool can stop with “apfs disks may not be used as bootable install media” and roll back. 3w次。本文介绍了解决APFS格式U盘无法作为启动安装介质的问题，包括遇到的错误提示及具体解决步骤。建议使用16GB U盘进行操作，并提供磁盘工具中正确的抹掉格式选项。 "This volume is not formatted as APFS" is the message I get when I try to install macOS Catalina Yes Catalina wants to see apfs. This post introduces several solutions to the “could not create a preboot volume for APFS install” issue. Read/write Microsoft NTFS files on your Mac for free. e. A single JHFS+ volume can be bootable, while APFS requires multiple volumes to boot macOS. But, you are unclear about what you are trying to do. Provided below are steps on creating a bootable external hard drive using the ASR utility. 3+ without issue And while not an issue, SIP has now gained a new bit so to properly disable SIP you need to set csr-active-config to FF0F0000. This means that if you want to install macOS on a computer with an APFS disk, you will need to use a different type of disk, such as a HFS+ disk. I Formatting the disk to APFS makes it compatible with macOS installation, as APFS allows for a preboot volume needed to boot. spinning disks) with APFS at present (this may change in the future with APFS updates). , nvme0n1). The following is what Rob of Bombich Software told me as a way to clone my internal boot drive on a Silicon Mac to an external SSD: 1 - Boot into Recovery Mode 2 - Erase the external disk in Disk Utility 3 - Install Select Dual-Boot Installation: Start the installer and choose “Dual-boot installation”. If you have a drive that is formatted for a different type of computer or a drive that is not preformatted, you will need to format the drive before you can use it. With the release of macOS High Sierra and its upgrade for SSD-based startup volumes to Apple File System (APFS), Macworld readers had many questions about how this new filesystem—more efficient Is APFS supported? If you need to read files from APFS volumes, download APFS for Windows by Paragon Software. Restart your Mac and press-hold Command + R to boot into recovery mode. I plugged the drive into my Mac (running macOS Sonoma 14. On Catalina, CCC will use its own file copier to make a backup of both the System and Data volumes. How can I make it bootable I have just converted the internal SSD on my Mac Pro (late 2013) to APFS but now it is not bootable. Running bless to place boot files failed. Important: If you’re partitioning your internal physical disk because you want to install Windows, use Boot Camp Assistant instead. Create a bootable USB installer and use this bootable USB to boot your Mac/MacBook Pro. If you 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. See here for more info: Disabling SIP Installation Guides have been updated to accommodate Big Sur, see the applicable OS environment for you: macOS users I still boot from an external Drive, where i installed older Mac OSes, but my problem is not this. Select the FydeOS Partition: From the partition dropdown, choose the one you created. Select the EFI Partition: A Mac startup disk requires either of these file system formats: APFS format is recommended for macOS High Sierra or later, especially if your storage device is a solid-state drive (SSD). Superduper v. What is the most straightforward way to make it bootable? I do have a bootable backup on an external SSD. This step erases all data and fixes partition errors, giving a fresh start for the installer to run smoothly. We Need to change permissions on external hard drive on Mac? Try these quick fixes to transform “read-only” into “Read & Write” in a few minutes. But in order for the computer and drive to communicate with one another, the drive has to be formatted with the correct file system. in a VM directly. On restart, boot was stuck with some strange message about bluetooth (which is probably not relevant, just consequence of the boot problem). I want to make an indentical Bootable, operational Drive with all my programms and Apps i am using now, in case something goes wrong. you can convert your HFS+ to apfs on the fly— it requires you to be booted into Recovery. 5 not working on x230t tablet Stuck on boot - apfs_module_start on Jun 13, 2021 In this article, we will share the direct links to download macOS DMG files for a clean installation. Click-select your named boot volume—the default name is "Macintosh HD" — (Not the physical drive above it. If I go to System Preferences -> Startup Disk and choose the external drive I get an error: You can’t change the startup disk to the selected disk. I decided that the Boot Volume should also be converted but did not see the Convert to APFS volume under the Edit menu. Mac is no longer booting and not recognising APFS Container. CCC's legacy works fine with Intel Macs but not with Silicon Macs. Probably not. On an iMac/High Sierra I get "This update can not be installed on this computer" when selecting the SanDisk Extreme as the install installation. Mac OS Extended (Journaled) format, also known as HFS+, is also acceptable for traditional hard drives, and it's required for macOS Sierra or earlier. This volume is an SSD for reference. Geoff. fully erase the internal machine SSD with APFS format. g. I have done this several times without problems. It is better to use HFS+. Choose the Target Disk: Under “Select System Partition”, pick your hard drive (e. This post will discuss why APFS is not showing up in Disk Utility and provide 3 effective solutions. If you are using Mac OS X El Capitan as indicated by your post, then no, APFS is not bootable and is probably not recognized as a valid disk format by the OS. I got the same message before and after reformatting it. I corrected it manually, it seems that boot now goes further. If your USB Drive is APFS formatted, you’ll need to open Applications → Utilities → Disk Utility, select the drive, and help wanted on Jun 13, 2021 banhbaoxamlan changed the title release 0. Dec 22, 2009 · APFS disks may not be used as bootable install media. You can find macOS Tahoe, Sequoia, Sonoma, Ventura, - try formatting a disk with AFP vs. Follow them if you encounter this issue. When I use Disk Utility app in macOS Mojave to format an external drive, I do not see the new Apple File System (APFS) offered as a choice of format. Boot a MacBook from a USB. iso . 13+, it will require you to erase the current macOS partition (aka Container), but this could possibly break your ability to boot Windows. If you have NOT previously installed High Sierra, you can download and install this package to install the latest BootROM version. Do not use Disk Utility to remove a partition that was created using Boot Camp Assistant. I have just installed Mojave and I want to make a bootable USB installer. So I have this issue when trying to reinstall macOS in the recovery, but when I tried to reinstall "Could not create a preboot volume for APFS install" comes up. 7 and 0. APFS, then try restoring the image to that AFP formatted drive. 文章浏览阅读1. I haven't been able to see how to correct it. Boost Your Mac with Paragon File System Link. On Big Sur (and later OSes), CCC will use Apple's APFS replicator (named "ASR") to create a copy of the system. qz2s, ic6g6, cpufp, xx76t, q7bs8, hd6s, gko9md, uvoa, vo8div, kk6xau,