Where did Yosemite go ?!!

[aliensporebomb]

Sigh

I feel for you, I really do.

My first Yosemite installation did a similar thing and I had to wipe my internal drive and start completely over from scratch.

Not altogether pleasant but I did have backups (I have 5 different external drives) of 90% of the data I needed.

The only upside is things were slightly faster after starting over just because that's the nature of the beast.

 

[IA64]

I feel for you, I really do.

My first Yosemite installation did a similar thing and I had to wipe my internal drive and start completely over from scratch.

Not altogether pleasant but I did have backups (I have 5 different external drives) of 90% of the data I needed.

The only upside is things were slightly faster after starting over just because that's the nature of the beast.

Thanks guys.

In fact I have backup of files but I do not have backup of program files and all installations + customizations + settings + tweaks...

Funniest thing is that Yosemite was not worth the hassle

 

[IA64]

update :

After 12 hours of reading and searching online, I was able to restore the Bootcamp partition table BUT :

Now Bootcamp starts in Legacy mode not EFI

If try to install the Windows 8 again, it says it can't use the disk as it expects GPT whereas the disk has MBR.

In the past I used to have 2 options, one to boot Windows in Legacy and other UEFI.

Now anyone kind enough ( MacRumors Guru or expert in partition tables ) to tell me how to restore the EFI option for Windows boot ? )

When I boot from USB using Legacy it detects the OS but it doesn't when I run the USB in EFI, says device not found.

I'm half way there and need your support guys !

Thanks.

gpt show: disk0: mediasize=500277790720; sectorsize=512; blocks=977105060
gpt show: disk0: Suspicious MBR at sector 0
gpt show: disk0: Pri GPT at sector 1
gpt show: disk0: Sec GPT at sector 977105059
      start       size  index  contents
          0          1         MBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  292968736      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  293378376    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  294647912       1944         
  294649856  682455040      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
  977104896        131         
  977105027         32         Sec GPT table
  977105059          1         Sec GPT header

Karims-iMac:~  $ sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.10

Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Partition table scan:
  MBR: hybrid
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with hybrid MBR; using GPT.

Command (? for help): p
Disk /dev/disk0: 977105060 sectors, 465.9 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 43DFAFB8-5595-44E0-9A3F-2E7B7ECBD9F2
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 977105026
Partitions will be aligned on 8-sector boundaries
Total free space is 2081 sectors (1.0 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              40          409639   200.0 MiB   EF00  EFI System Partition
   2          409640       293378375   139.7 GiB   AF00  Customer
   3       293378376       294647911   619.9 MiB   AB00  Recovery HD
   4       294649856       977104895   325.4 GiB   0700  BOOTCAMP