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Apple Computing Products:
macOS - Operating System
Some SD Backups not showing up
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<blockquote data-quote="krs" data-source="post: 1830780" data-attributes="member: 67742"><p>I'm trying to get my head around this....</p><p>I have a few backups of my Mini done with SuperDuper.</p><p></p><p>Two are on partitions on a 8TB Seagate USB 3 external that requires an external power supply and two are on a 2TB USB 3 external portable powered via the USB 3 cable.</p><p>I don't think powering makes any difference, but I thought I mention that.</p><p>In each case, the drives are partitioned into 500 MB volumes.</p><p></p><p>When I boot up the Mini holding down the option key -</p><p>with the 8 TB drive connected, only the Mac Mini internal drive shows up - neither one of the back ups do, and</p><p>with the 2TB drive (and the 8 TB drive) connected, both backups that are on the 2 TB drive show up and the internal of course. Booted from one of the back-ups, that worked fine.</p><p></p><p>All the drives, including the backups on the 8 TB drive show up on the desktop, show up when I boot into the internal.</p><p></p><p>Both drives are connected directly to a USB 3 port on the Mini, not via a hub which I thought might be the problem.</p><p></p><p>Basic question - if I check the files and folders of the backups that don't show when I boot up with the Option key (ie I assume for some reason they didn't get backed up properly and made "bootable") is there some file or folder that determines if a back up is bootable that I could look for and that might be missing?</p><p></p><p>From a practical point of view it's not an issue since the most recent back up worked fine, but I would still like to understand what might have happened.</p><p>I have been using SD and occasionally CCC for many, many years now and can't remember this ever happening before.</p><p>Both drives btw were partitioned with GUID</p></blockquote><p></p>
[QUOTE="krs, post: 1830780, member: 67742"] I'm trying to get my head around this.... I have a few backups of my Mini done with SuperDuper. Two are on partitions on a 8TB Seagate USB 3 external that requires an external power supply and two are on a 2TB USB 3 external portable powered via the USB 3 cable. I don't think powering makes any difference, but I thought I mention that. In each case, the drives are partitioned into 500 MB volumes. When I boot up the Mini holding down the option key - with the 8 TB drive connected, only the Mac Mini internal drive shows up - neither one of the back ups do, and with the 2TB drive (and the 8 TB drive) connected, both backups that are on the 2 TB drive show up and the internal of course. Booted from one of the back-ups, that worked fine. All the drives, including the backups on the 8 TB drive show up on the desktop, show up when I boot into the internal. Both drives are connected directly to a USB 3 port on the Mini, not via a hub which I thought might be the problem. Basic question - if I check the files and folders of the backups that don't show when I boot up with the Option key (ie I assume for some reason they didn't get backed up properly and made "bootable") is there some file or folder that determines if a back up is bootable that I could look for and that might be missing? From a practical point of view it's not an issue since the most recent back up worked fine, but I would still like to understand what might have happened. I have been using SD and occasionally CCC for many, many years now and can't remember this ever happening before. Both drives btw were partitioned with GUID [/QUOTE]
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Apple Computing Products:
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Some SD Backups not showing up
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