- #Formatting samsung 850 evo for mac how to#
- #Formatting samsung 850 evo for mac for mac#
- #Formatting samsung 850 evo for mac mac os#
- #Formatting samsung 850 evo for mac install#
#Formatting samsung 850 evo for mac install#
If you have an unquenchable desire to install High Sierra on that laptop then it would be safest to create an install USB key (instructions are available), format the drive for APFS and install High Sierra.
#Formatting samsung 850 evo for mac how to#
If you run into that and do not understand how to proceed any competent repair shop should be able to do that in about ten minutes-just bring the bootable clone with you to facilitate.Īfter restoring Sierra you can try a direct update again to High Sierra because we all know lightning never strikes the same place twice. From the booted clone you will need to use terminal to completely wipe the disc before it can be reformatted by terminal commands or in disk utility.
#Formatting samsung 850 evo for mac for mac#
If you find disk utility can not format and partition the disc for Mac Journaled (required for Sierra) that does not mean there is a problem with the Samsung drive. Unfortunately disk utility is underpowered to fix some formatting and partitioning problems. You can easily find instructions to walk you through that if you do not understand how to do it.
#Formatting samsung 850 evo for mac mac os#
If you do not have a specific need for High Sierra in a laptop of that vintage then if you boot to the external backup Superduper should be able to restore Sierra.Your post indicates you have to use disc utility to format the internal drive to the basic Mac OS Journaled before restoring from the clone because the upgrade process screwed up how the disc is partitioned and formatted (OSX boot discs of all ilk require a front EFI partition and a second OS partition). You did nothing wrong, the update failed for whatever reason. The problem appears to be that the storage device was not properly formatted for APFS during the upgrade, a not uncommon problem. Other World Computing – Partition Drives & Create APFS 'Containers' for Space Sharing with Disk Utility Reddit – What are 'Other volumes'? : MacOS I'm not sure why you have a second container / partition, but if you had your drive partitioned before, that might explain it. E.g., "Recovery" supports emergency booting using Cmd-R. The Preboot, Recovery, and VM volumes are for OS use. I believe that the volumes in the first container / partition are normal for High Sierra. Then boot from that copy of High Sierra just long enough to clean up the internal drive. Another possibility would be to get an unused external drive (or memory card, or thumb drive) and install High Sierra on it. You can probably do this from Disk Utility on your Sierra backup drive. I believe that you probably want to get the internal drive back to HFS+ format (which will require reformatting). It can't show you the files the best that it can do is to complain. APFS first appeared in High Sierra, so of course, Sierra doesn't know what's on that internal drive. Once your installation failed, and you went back to your bootable clone (those things can be life-savers!), you were running Sierra. I would assume, based on this, that your internal drive is a pure SSD, because that's where Apple first supported APFS. As a part of the failed High Sierra installation, the installer converted the partitioning and formatting of your internal drive to APFS. It's the first OS upgrade failure in 24 years using Macs. Everything is running normally, so this problem caught me off guard. On Tuesday I upgraded my Mac Mini to High Sierra that boots from an external Samsung 850 EVO. Man, am I glad that I backed-up the MBP before doing the upgrade! (I also made a copy of the backup this morning Just In Case.) And I have no idea how to proceed from here. Why two internal drives are showing up is a mystery to me. Then there is a second internal drive labeled "Samsung SSD 850 EVO 250GB Media." In Disk Utility the internal drive at the top reads "AppleAPFSMedia." The volumes listed under it read "Macintosh HD, Preboot, Recovery and VM. Use Disk Utility to enable journaling or reformat the disk."įor kicks I tried running First Aid Repair on the Macintosh HD but it failed. It read:ĭisk not formatted as Mac OS Extended (Journaled). When I tried to selected the "Macintosh HD" as the destination for High Sierra it was greyed-out. The MBP is now booted-up using the external. It suggested reinstalling High Sierra.įortunately, I made a bootable backup of the MBP using SuperDuper on an external hard drive prior to doing the upgrade. The upgrade appeared to be fine yesterday but upon startup this morning a log window appeared with a notice that the High Sierra upgrade was incomplete or failed. It has a Samsung SSD 850 EVO that replaced the original internal drive.
Yesterday I upgraded my wife's 2011 13" MBP.
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