After installing Catalina a second time, it put a second Mac HD data partition. Then when trying to use Time Machine, it failed. Because there are two drives with the same name HD data. How do I rename the drive or delete the Drive. How do I know which one Catalina is using?
iMac Line (2012 and Later)
Finally an answer ;
everything is back to normal
after talking to a senior analyst ; the drives must be erased before installing catalina; otherwise it will just keep install new ones with the old data drives.
Forcing us to live with apples so called security scheme of making 2 partitions on my drive is crap! Guess I won't be upgrading to Catalina any time soon. As soon as I saw my test drive was formatted this way I knew I wasn't going to like the direction they're going in. Too bad since I've been an Apple fan and Mac user since about 1986.
After you have erased the hard drive, turn the computer off and open in Internet recovery mode. There will be an option to restore from time capsule.
Internet recovery mode is command option R. If you have a Bluetooth keyboard, you have half a second, to press command option R, when powering up.
I deleted both the Data drives, leaving the HD drive in place. Shut down and restarted in Recovery mode and tried to use Time Machine to recover. It found Time Machine but would not start the download. Then tried to Reinstall Mac OS onto Mac HD. Got the message "The target volume is part of an incomplete system and cannot be installed to".
HELP please
Craig, you are right I missed part 5. Have now connected old time machine and am "hopefully" reinstalling Mojave. If it works I will stay with it for ever. If not I may try again, but I don't remember seeing internet recovery mode as an option. Keeping my fingers crossed.
I have not downloaded Catalina twice. I just bought a brand new computer, and when I try to use time machine, it won't let me. I have the double data hardrive problem. I don't even have one time machine backup to use. Now what? I thought when I bought the new computer all my problems would be over.
Craig150,
I hardly think this issue is solved.
The worst part of this experience for me is that Time Machine was horribly corrupted during the process of restoration or, did not import and parse the data properly. I did end up renaming a data drive to move forward but everything after that was a domino effect of failures.
The double Data drive images caused Time Machine to fail until a drive was renamed.
How is one to know which drive is legitimately connected to the installation and going to function properly? I have moved on and just left things alone as I have spent so much time with this upgrade issue on so many levels that I need to get work done instead of bang my head against the Apple wall. I can only hope Time Machine is functioning properly, I no longer trust the process.
At some point down the road I will wipe everything and start fresh, probably after a few iterations of upgrades, but this has been a ridiculous exercise in Apple dramatically changing the game with no sensible path for educating end users in place.
Very frustrating,
gchdrake
I have 2 external HD. First one with High Sierra. The other one with Catalina.
When I boot on Catalina HD, I see only one volume for this HD.
When I boot on High Sierra HD, I see Catalina 2 volumes.
Is it normal ?
Should I do something ?
Thanks in advance for helping.
Time Capsule was an external drive made by Apple to hold your Time machine backup. It hasn't been around for quite some time. However, the instructions apply to any Time machine backup on any external drive that you have.
The mac was about half full, however now it seems to have taken the majority of the space, may a double copy?
I have this question too...
Did you reinstall, Catalina a 2nd time? Do you have other volumes or containers on the same disk?
I've reinstalled several times, Yes. No other volumes. Just one drive that I erased before installation.
Yes, that is what happened to me, I did download Catalina a second time to make a bootable USB stick. Now I have no idea how to get rid of this unit without risking the system.
OS Catalina. 2 MAC HD data drives
