My data is essential to my living, so I cannot afford to risk losing it. See Cloning as a Backup Strategy for a simplified use case.
The simplest form is one original to one backup. Note: my system is a multi-redundant effort as shown here (multiple backups done at once).
Verification of data integrity for all files on the backup drives after the backup or at any later time ( Integrit圜hecker).
Verification of file system integrity on the backup drives. Process: not wiping out all backups while backing up (hence at least three backups so one can cycle through them on a rotating basis). Physical redundancy: at least three separate backups stored safely away from the computer, preferably more backups as the value of the data rises, and preferably not all backups stored in the same place. Mds 73 root 20r DIR 1,6 340 2 /Volumes/Install macOS High Sierra mds 73 root 23r DIR 1,6 4998 26 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root twd DIR 1,6 4998 26 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root 20r DIR 1,6 4998 26 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root 22r DIR 1,6 4998 26 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root 34u REG 1,6 28 33 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root 36r REG 1,6 118784 58 /Volumes/Install macOS High Sierra/.Spotlight- mds_store 223 root 40u REG 1,6 118784 59 /Volumes/Install macOS High Sierra/.DiglloydTools (data integrity/validation)Ī robust professional backup process includes these attributes: Lsof | grep /Volumes/'Install macOS High Sierra' Unmount of disk1 failed: at least one volume could not be unmounted Sudo dd if=/dev/zero of=/dev/disk1 bs=10000000ĭisk1 was already unmounted or it has a partitioning scheme so use "diskutil unmountDisk" instead Started erase on disk1 Unmounting disk Error: -69888: Couldn't unmount disk Sudo diskutil eraseDisk JHFS+ Lexar disk1 Using the Terminal app with the following commands: Using Disk Utility app, but it does not see the USB or just keeps spinning. Would you have any suggestions or ideas? Also, I don't understand what PID 0 is doing to prevent me from erasing the USB. Now that I’m done with it, I cannot erase it. I created a bootable USB with High Sierra on it.
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