How to securely erase a bad fusion drive with hidden partition? Time Machine can access data, not visible otherwise.
iMac OS 10.15.3, Built 2013.
was previously Filevaulted
This iMac's fusion drive split and I have since repaired it. The drive appears bad. I erased the drive - at that time the operating system was Mojave, but added Catalina after erase. But on a recent Time Machine backup all the data shows as STILL ON the computer, and not visibly accessible except on a Time Machine back up I recently made. It is just like I never erased it.
BRIEF BACKSTORY: On another iMac I had a little issue with the Time Machine so I thought I would test the issue out by backing up the 2013 iMac (which was erased and NO NEW DATA was added) via Time Machine and just see what the result was. The result really surprised me:
Time Machine showed:
- Macintosh HD
- Macintosh HD - Data
- Macintosh HD-1 ---- and this showed ALL my previous documents which should have been wiped when I erased the machine - completely accessible.
- Recovery
QUESTION: How can I erase my data on this computer? Since the data shows on the Time Machine I'm thinking there might be some way to delete this data .... maybe via Thunderbolt cable and another Mac? Or? Any and all suggestions welcome. Happy to answer any further questions if needed.
Other things I've tried:
- I have again erased the data. (Disk Recovery Mode / Disk Utilities /erased Macintosh HD-Data / followed by Macintosh HD (unmounted or mounted} Apple Sr. Advisor said it didn't matter) - still have the same issue.
iMac Line (2012 and Later)