I had an issue running an App and the vendor suggested I should revert to the earlier OS X 10.10.3.
I located on Time Machine the backup version I needed, waited for the format and restore. I then needed to repeat the process of restoring from Time Machine, but now the MacBook is in a stupid state.
The system starts with OS X Utilities. Restore from Time Machine backup gets me to the point where it wants to know the destination drive, but my SSD doesn't show up.
Same thing if I choose Reinstall OS X.
If I select Disk Utility, I can see the SSD as "Macintosh HD" and I can see "First Aid" and "Partition" but no "Erase". If I select "Verify Disk" or "Repair Disk", the log shows that everything is working fine....it is 499.42Gb in size. The OS X Base System volume is also there....
So without seeing "Macintosh HD", I cannot recover from Time Machine or Reinstall OS X.
I am stuck, any ideas folks?
Thanks for your kind reply. To explain again:
- I restored a Time Machine version of OS X 10.10.3, then I did some work and then decided to recover the same version of Time Machine backup a 2nd time.
- The second restore of OS X 10.10.3 failed.
- Using Disk Utility, I can see the "Macintosh HD" volume, but only the tags "First Aid" and "Partition" are shown.
I followed your procedure described above to create a USB boot system. The following happened:
A 4Gb USB stick was declared by the system as being too small.
I eventually found a 16Gb USB stick and the download proceeded, but when the system was in "Setting up...." mode, I got a warning that the memory was too small and that memory was nearly full. A short while later I got a "Memory Full" error!!! and nothing further other than the spinning wheel and a waste of time.
Next day I went to the store and bought a 64Gb USB stick. When I started the system copy process, the Internet was having issues it I received a notice that the process would take around 738hrs!!!!
Eventually I got to a 2hrs15min download and the process completed, except the notice that my system would restart in 10secs never happened....I clicked the "Restart" soft key and off we went. 10hrs later I was still seeing the "Setting up...." message and the occasional flicker of the USB LED.
I then found a bootable OS X 10.8.2 and restarted my Macbook Pro.
Using the Disk Utility, I can see the "Macintosh HD", but again only the "First Aid" and "Partition" tabs are shown.
This time when I do a "Repair Disk" I get the messages: "disk0s2 has CoreStorage features not supported by this fsck_cs version" "Problems were encountered during repair of the partition map" "Error: This disk needs to be repaired. Click Repair Disk."
Clicking "Repair Disk" just brings me to the same messages.
If I could just "Erase" my "Macintosh HD" volume, I would be good to go.....frustrating!