cloned external ssd won t boot mac | macrumors imac external ssd cloned external ssd won t boot mac I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security . $21.99
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I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security Update 2020-001, the external SSD is no longer recognized at boot time. I found that I can boot from my external SSD reliably as long as my external HDD for Time Machine is not connected. No need for the extensive process below - just power .
iMac 3.7GHx 6-core Intel i5 27-inch 2019, running Monterey 12.6.9 from an external SSD. The internal fusion drive isn’t bootable since Carbon Copy Cloner didn’t . I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security . I tried setting the Startup Disk to the External SSD in System Settings and then attempted to reboot and I received this message: An error occurred while setting “Ext . If you can't do that because your Mac can't start up from its built-in startup disk, you can install macOS from macOS Recovery instead. When the installer asks you to choose where to install, select your external storage .
I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security Update 2020-001, the external SSD is no longer recognized at boot time. I found that I can boot from my external SSD reliably as long as my external HDD for Time Machine is not connected. No need for the extensive process below - just power down, unplug external HDD, and my Mac can boot from the external SSD.
iMac 3.7GHx 6-core Intel i5 27-inch 2019, running Monterey 12.6.9 from an external SSD. The internal fusion drive isn’t bootable since Carbon Copy Cloner didn’t (couldn’t?) include to. I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security Update 2020-001, the external SSD is no longer recognized at boot time. I tried setting the Startup Disk to the External SSD in System Settings and then attempted to reboot and I received this message: An error occurred while setting “Ext Macintosh HD” as the. If you can't do that because your Mac can't start up from its built-in startup disk, you can install macOS from macOS Recovery instead. When the installer asks you to choose where to install, select your external storage device before continuing.
I can successfully boot up the iMac with the SSD via an external caddy (through the USB port) — but unfortunately, not internally. I double-checked the internal connections to the SSD with the SATA data and SATA power cables but they seem nicely connected and I still got the same issue. Have you tried the SSD in an external enclosure or docking station? If it's recognized, does it show as being the 3G (vs. the 6G). (You will have to watch out for enclosures and docking.
I tried replacing my internal HDD by an SSD (crucial m550 - 256Gb) on my Mac with the latest OS running. I made a clone with carbon copy cloner from the original HDD to the new SSD (ca. 130Gb). The SSD boots perfectly when connected over USB, but is not found when connected internally.When your Mac restarts, it will boot from the external drive to complete the installation. If you want to make this drive a bootable clone, Bombich Software, makers of Carbon Copy Cloner. I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security Update 2020-001, the external SSD is no longer recognized at boot time.
I found that I can boot from my external SSD reliably as long as my external HDD for Time Machine is not connected. No need for the extensive process below - just power down, unplug external HDD, and my Mac can boot from the external SSD.
iMac 3.7GHx 6-core Intel i5 27-inch 2019, running Monterey 12.6.9 from an external SSD. The internal fusion drive isn’t bootable since Carbon Copy Cloner didn’t (couldn’t?) include to. I’ve been booting our 2013 iMac from an external USB SSD; the internal Fusion drive is flaky and I’ve associated it with repeated crashes. But after installing Catalina Security Update 2020-001, the external SSD is no longer recognized at boot time. I tried setting the Startup Disk to the External SSD in System Settings and then attempted to reboot and I received this message: An error occurred while setting “Ext Macintosh HD” as the.
If you can't do that because your Mac can't start up from its built-in startup disk, you can install macOS from macOS Recovery instead. When the installer asks you to choose where to install, select your external storage device before continuing. I can successfully boot up the iMac with the SSD via an external caddy (through the USB port) — but unfortunately, not internally. I double-checked the internal connections to the SSD with the SATA data and SATA power cables but they seem nicely connected and I still got the same issue. Have you tried the SSD in an external enclosure or docking station? If it's recognized, does it show as being the 3G (vs. the 6G). (You will have to watch out for enclosures and docking.
I tried replacing my internal HDD by an SSD (crucial m550 - 256Gb) on my Mac with the latest OS running. I made a clone with carbon copy cloner from the original HDD to the new SSD (ca. 130Gb). The SSD boots perfectly when connected over USB, but is not found when connected internally.
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