No Bootable Device For Mac

This is an absolute nightmare that will not end. My identical computer works fine. What the heck is going on here? Why is High Sierra destroying the Bootcamp partition or at the very least, why is it making it unbootable?

No Bootable Device For Mac

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If the issue persists or the boot option fails to save changes, using the BIOS settings menu, turn on Pre-boot Execution Environment (PXE) to set the network as a boot device. Repeat the steps above. After you create the boot option, you can turn off PXE again.

We include a number of Mac devices in our Certified models list. While devices usually work as expected, sometimes ChromeOS Flex successfully installs but then a significant or indefinite delay occurs. Subsequently, when you try to boot ChromeOS Flex, you might see a black screen on the device.

Mac devices have memory on their logic board, known as parameter RAM (PRAM) or non-volatile RAM (NVRAM). Among other uses, logic board RAM remembers the default boot device. After ChromeOS Flex is installed, the logic board might continue to look for the previous OS-X or macOS install that it expects.

The logic board RAM is now cleared. You might need to reset brightness and volume on the device. Boot time might significantly improve. In some cases, you might even be able to fix a total failure to boot.

Copying Apple's system is now an Apple-proprietary endeavor; we can only offer "best effort" support for making an external bootable device on macOS Big Sur (and later OSes). We present this functionality in support of making ad hoc bootable copies of the system that you will use immediately (e.g. when migrating to a different disk, or for testing purposes), but we do not support nor recommend making bootable copies of the system as part of a backup strategy.

Please bear in mind that you can restore all of your documents, applications, and system settings from a standard CCC backup without the extra effort involved in establishing and maintaining a bootable device.

In the past, a "bootable backup" was an indispensable troubleshooting device that even novice users could rely upon in case their production startup disk failed. The reliability of Apple's External Boot solution has waned in the past several years, however, and the situation has grown starkly worse on the new Apple Silicon platform. Apple Silicon Macs will not start up (at all) if the internal storage is damaged or otherwise incapacitated, so there is very little value, if any, to maintaining a bootable rescue device for those Macs.

It has also grown increasingly difficult to make a copy of the operating system. Starting in macOS Big Sur (11.0), the system resides on a cryptographically sealed "Signed System Volume" that can only be copied by an Apple-proprietary utility. That utility is very one-dimensional; choosing to copy the system requires that we sacrifice other backup features, e.g. we cannot copy the system and retain versioned backups of your data. Due to these changes and the limitations of Apple's new "Apple Silicon" platform, creating an external bootable device is not only less approachable for novice users, it's also less likely to serve as a reliable troubleshooting device.

If you would like to configure CCC to create a bootable copy of your Mac's startup disk, you can use the Legacy Bootable Copy Assistant. After selecting your source and destination volumes, click on the Destination selector and choose Legacy Bootable Copy Assistant...

This option is the default behavior when not using the Legacy Bootable Copy Assistant. CCC presents this only as a reminder that non-bootable options are available, and sometimes more palatable, e.g. if you do not want to erase your current backup volume.

For the reasons noted above, we do not recommend that you attempt to make your backups bootable; we recommend that you proceed with a "Standard Backup" instead. You can restore all of your documents, compatible applications, and settings from a standard CCC backup without the extra effort involved in establishing and maintaining a bootable device.

If your Mac is running Big Sur or later, yes. As of macOS Big Sur, we're required to use Apple's APFS replicator to establish a bootable copy of an APFS volume group. We're unable to leverage the SafetyNet feature, and it's no longer appropriate to store other data on the destination volume. You must dedicate a volume to your bootable copy of the system.

On a separate, dedicated volume, yes. We recommend that you add an APFS volume to the destination APFS container and use that new volume for your other content. As long as the system copy and the other content are stored on separate volumes, these can coexist peacefully on the same physical device. Likewise, you may add a partition to your destination disk if the destination is not APFS formatted. For example, if you have an external hard drive that already has content on an HFS+ formatted volume, you can add a partition to the disk and use the new partition for the copy of the system.

You should not expect the destination to remain bootable after running additional backup tasks to the destination (i.e. via manual or scheduled backups). The Legacy Bootable Copy Assistant is intended only for creating ad hoc, bootable copies of the system that you intend to use immediately.

If your Mac is running Big Sur or later, then it is not possible to exclude content and produce a bootable copy of the system. If you must exclude content from the initial copy, then we recommend that you proceed with a Standard Backup.

No, only the selected destination volume will be erased when you proceed with the "Erase destination" option. Other volumes on the same physical device will be unaffected. Regardless, we never recommend that you target a disk that has data on it that is not backed up elsewhere. If those other volumes are not yet backed up, then back up that data before proceeding.

We recommend using the Legacy Bootable Copy Assistant any time you have an immediate need to create a bootable copy of your startup disk. However, if some time in the future you find a need to boot from an external device, and you have an existing Standard Backup on a non-encrypted APFS volume that you would like to make bootable, you can install macOS onto that volume:

Please note, however, that our recommended and supported procedure for restoring your startup disk from a CCC backup is to install macOS onto a freshly-erased volume, then use Migration Assistant to migrate data from the CCC backup. A bootable volume is not required for this procedure.

I'm a computer novice and i wanna reinstall my windows 10 for my HP laptop since it was crashed, but i have a macbook pro, so I was wonder if it's possible to create a windows 10 bootable installer USB on macOS without terminal?

****EDIT**** The ExFAT formatted drive with Windows ISO did not work as a bootable drive. I had to create a Windows partition on my hard drive and boot into that to make a functioning boot drive.

This trick does not work at all! Only a small portion of computers recognize exFAT USB as bootable device. It failed on my Dell desktop. FAT32 is more recommended. In addition, a single copy-and-paste of Windows 10 ISO file is not going to make the drive bootable.

Otherwise, try UUByte ISO Editor app instead, it is more suitable for beginners. It only took me 7 minutes to make a bootable Windows 10 USB on my MacBook Air (Big Sur with M1 chip) . No commands and hassle free. You can refer to this step-by-step guide (Method 2):

If you are using a newer Windows 10 ISO (after version 201809), then UUByte ISO Editor is the best app for creating a bootable USB on Mac. It automatically splits the large ISO file into small parts so the Windows installation files can be sit on a FAT32 partition, which is the only working file system supported by Mac for Windows install. Also, this app works on latest Big Sur and M1 Mac as just tested it on a M1 MacBook Air with macOS Big Sur 11.5.

If you are using an old version of Windows 10 ISO, then Boot Camp Assistant can help you get this done easily. It is a built-in free app shipped with macOS by default. However, this feature is removed from Boot Camp app on macOS Big Sur. You can still use this app for creating bootable Windows USB on Catalina and Mojave as far as I know.

Share the tools and methods I know: How about the boot camp Assistant? Although it does not work sometimes, as a multi-boot creation utility, it can create a Windows 10 bootable USB on your Mac. If you are good at CMD, it is possible to use CMD to create Windows 10 bootable USB on a Mac in a virtual machine. But if you are a computer novice or are not know much about CMD, please find another way. If you have installed Windows iSO files on your Mac, try UNetbottin, plug in the USB on Mac, and launch the Disk Utility option. Open the Windows .iso file in UNetbottin and burn it to the USB flash drive. Generally speaking, the task is OK completed in 15 minutes. Suppose you are not interested in the above software. I think UUbyte iSO Editor is enough. Just download and install this software on your Mac and run it. Next, you can burn iSO files to USB. The whole process won't take a long time. UUbyte iSO Editor is a good choice for computer novices. And can quickly complete tasks without any technical requirements.

For the fewest issues or problems with a bootable windows 10 iso the best option is to find a windows computer or ask a friend, neighbor, relative, or local computer store to make the iso on a computer with Windows.

If the BIOS cannot locate the bootable hard drives, there is no chance of locating the MBR or boot sector. The computer will search for any known boot device configuration, and if all devices error, you get the message.

A bootable device can be any storage device connected to your computer, and advanced computer users can boot from a network or remote storage, but the majority of us boot from a USB connection, CD/DVD drive, or an HDD/SSD/NVMe connected directly to the motherboard. 2ff7e9595c