…which is also backed up with Time Machine, clones, Arq.Key files backed up again to Dropbox and synched to another machine.Backup to cloud (Wasabi) using Arq, going back 5 years.Two full copies of data, updated alternatively every 4 weeks and rotated offsite.2nd Time Machine that I only connect once a month.That being said, I’m a belt and suspenders kind of guy. If you’re going to have a full backup on external media, why not make it bootable? The point to a bootable backup is that it reduces your downtime to minutes. It would be a great “Do you use it?” poll. While having a bootable backup for this machine isn’t that important (it isn’t my primary computer), I think bootable backups are one of the great features of Macs, if not fully appreciated. If your system dies, you can reinstall macOS (via the Recovery volume) and then use Migration Assistant to put back everything that was on your Data volume. Instead, make non-bootable backups (including clones and Time Machine). The signed system volume just makes it awkward and difficult for the result to actually be bootable. These days, the common advice is to not even bother with bootable clones of any Mac running Big Sur or later. Scroll down about halfway for a large block of articles about external boot disks. Here’s Howard Oakley’s list of Apple Silicon Mac articles: M1 & M2 Macs – The Eclectic Light Company. From what I’ve read, it may be better and easier to clean-install macOS to your external device, then use Migration Assistant to copy your content to that newly-installed device. It’s my understanding that it may be very difficult (and may actually be impossible) to make a bootable clone of your internal volume. The drive was cloned from the MBP by SuperDuper! via Apple asr.īooting Apple Silicon Macs from external media has always been a challenge. I’ve been struggling to get a WD Elements (2 TB USB 3.0) drive to boot an Apple Silicon Mac, running Ventura 13.5.2. Even for relatively basic tasks, I’ve either stopped doing them, or I research them thoroughly before trying them if they might impact basic operations or data integrity. Starting with Mojave, enough things work differently, enough things change frequently, and, perhaps most importantly, enough things are so poorly documented that I no longer assume that traditional system administration procedures still apply. Sorry for the rant to follow, but I’ve basically given up and decided to throw out almost everything I knew from decades of working with Macs before High Sierra or thereabouts. I would erase the external drive and do a clean installation of Ventura to it (see Howard Oakley’s tips), and then, if I wanted my existing accounts and settings on the external drive, I would use Migration Assistant to transfer those to the external drive. I’m just trying to boot from it to encrypt it and keep it as an all-else-fails way to get the MBP started.įor that purpose, I wouldn’t try to clone the existing drive. What portable SSD drives are people recommending these days, with the ability to boot an M2 Mac? (Despite the problems with my Thunderbolt Envoy Express mentioned above). Which leads to my question: If I’m going to buy a 1 or 2 TB portable SSD drive, with the intent of being able to boot from said drive, I don’t want to buy something and then have it turn out that the MBP can’t boot from it either.įor example, I’ve seen comments that say that USB-C drives are more prone to boot issues than Thunderbolt. I’m just trying to boot from it to encrypt it and keep it as an all-else-fails way to get the MBP started. So, I’m thinking that either Ventura or the M2 Mac just doesn’t like the WD Elements drive, which I’ll admit, is probably a really bad choice for booting. But I don’t agree with that: I have an OWC Envoy Express that can boot my 2017 iMac if I clone to it, but it can not boot if I try to install or update macOS on it. The Carbon Copy Cloner help pages say that this is the definitive test for bootability. Different USB 3 cable (didn’t even see the drive!)Ībout the only thing I haven’t tried is changing the security policy, which isn’t supposed to be required.Īnd, doing the Ventura install to the drive instead of the asr clone.Different USB-C to USB 3 (type A) adapter.I think this means it can’t read the dylib cache. The MBP recognizes the drive as a valid Startup drive, but always fails early on with the same kernel panic: Library /usr/lib/libSystem.B.dylib not loaded. The drive was cloned from the MBP by SuperDuper! via Apple asr.
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