Windows 7 Partition Gone After upgrade to Yosemite
So as many people are experiencing after I upgraded to Yosemite I lost my windows Partition. Holding Cntl on boot shows no windows option to boot from. When going to disk utility on the mac side, the windows partition is still there but showing a weird name disk0s4. It is grayed out and I cannot touch it.
At this point I just want to salvage my data from that partition. Please tell me that is possible. I Created a new thread because I am really a complete noob with Macs and a lot of whats in the other threads is foreign language to me. So I need help step by step what to do and where to go.
I am hoping I can salvage all my important data, then just reformat the old windows partition.
Much appreciated for the help and input.
I tried TeskDisk and from the very beginning it mentioned about being unable to modify my hard disk as below.
=========
Write access for this media is not available.
TestDisk won't be able to modify it.
- No partition from this disk must be mounted:
Open the Disk Utility (In Finder -> Application -> Utility folder)
and press Unmount button for each volume from this disk
- This media may be physically write-protected, check the jumpers.
==========
I tried the Disk Utility but of course I couldn't unmount the Macintosh HD partition while running on it.
Anyway, I still ran TestDisk to see if all partitions would be detected correctly. It seemed good, as captured below.
All the partitions were found. Then I chose MS Data partition, keyed P and Enter to check its filesystem.
The error message was same as described in the step by step guide you sent me.
The I went back and tried Deeper Search.
It run for hours any the analyse sector was strange at the end, something like more than 600,000,000/488,397,167. Sorry I forgot to capture this figure. However, I think Deeper Search is unnecessary if TestDisk can find all partitions.The problem is write access.
Regarding GPT FDisk (gdisk-0.8.10), after installing it I can't find where it is on my computer.
Do you have any recommendation please.
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