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I'm trying to upgrade from High Sierra to Mojave. I downloaded Mojave no problem but I can't get it to install. I go through the install screens and I am only given one disk option to select to install macos. When I click on the disk it states "This disk is used for Time Machine backups". So I'm stuck. Any words of wisdom?
You do not have another disk to point Time Machine at, well you should if you are going to use Time Machine
or another backup regime.
There is no point to having Time Machine backup to the disk you are running your OS on.
The whole point of Time Machine is that should your mac internal drive fail then you
have a backup on another disk you can use to restore your mac to when you install a new disk.
If you have Time Machine backups on the same disk as your internal disk then when the disk fails you lose your
OS and your files and the backups you were hoping would rescue you.
As I said look for the Backups.backupdb folder and start deleting the contents of the folder,
this may take some time as there are hundreds of thousands of files in there, do one backup
at a time. you must be an administrator to do this.
When you have deleted the contents of the Backups.backupd folder then try deleting the
Backups.backupdb folder.
Only when you get rid of that folder will you be able to upgrade to macOS Mojave on your internal disk.
You do not have another disk to point Time Machine at, well you should if you are going to use Time Machine
or another backup regime.
There is no point to having Time Machine backup to the disk you are running your OS on.
The whole point of Time Machine is that should your mac internal drive fail then you
have a backup on another disk you can use to restore your mac to when you install a new disk.
If you have Time Machine backups on the same disk as your internal disk then when the disk fails you lose your
OS and your files and the backups you were hoping would rescue you.
As I said look for the Backups.backupdb folder and start deleting the contents of the folder,
this may take some time as there are hundreds of thousands of files in there, do one backup
at a time. you must be an administrator to do this.
When you have deleted the contents of the Backups.backupd folder then try deleting the
Backups.backupdb folder.
Only when you get rid of that folder will you be able to upgrade to macOS Mojave on your internal disk.
You should not be using Time Machine to back up to the Disk you run your OS on.
Switch off Time Machine, select another disk for your backups.
Look for any backups.backupdb folders and start deleting the contents.
Also look for any Time Machine snapshots that have been created and
get them moved off your internal disk.
I did remove the disk from the Time Machine (I do not have an option to choose another disk) and also turned the Time Machine off but I am still getting the same message. Any thoughts?
Thank you very much for your assistance. I found the folder and did as you said and it worked! I really appreciate your words of wisdom.
no available disc option to install macos
