An Update to my Mac COMPLETELY Obliterated Boot Camp

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An Update to my Mac COMPLETELY Obliterated Boot Camp

Apple Community,

Please help me. Two days ago I performed an update; I have a 27 inch 3.2 GHz iMac (not sure what kind of specs the community needs here). I updated to the OS X Yosemite 10.10.5 and the update completely erased my boot camp. I had 300-400 (not exactly sure how much I had) GB partitioned to the Windows 7 side. I tried to just repartition it today, and start from scratch. It won;t let me do it. Can I recover this data? Can I just revert it?

Please someone help me...

Stephanie

Also, I will check this regularly...

iMac (27-inch, Late 2013), OS X Yosemite (10.10.5)

Posted on Nov 1, 2015 6:57 AM

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Answer 1

Loner T

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59,536 points

Nov 1, 2015 11:15 AM in response to treehuggwanz

Do not partition your iMac using any tool. It will make things worse.

Please post the output of the following Terminal commands

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

If you have a Fusion drive, please add

sudo gpt -vv -r show /dev/disk1

sudo fdisk /dev/disk1

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Answer 2

treehuggwanz Author

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Nov 1, 2015 11:41 AM in response to Loner T

Hi Loner T,

First I would like to start by saying, thank you for replying. Secondly, I am not savvy with the computer language and have no idea what any of this means, and may need some extra help here. Thanks. Here is what happens when I type in those commands. Also, pertaining to the fusion drive, I am pretty sure I do not have that. Thanks Loner T, hoping to hear back from you.

Stephanie

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Answer 3

Loner T

Level 9

59,536 points

Nov 1, 2015 11:54 AM in response to treehuggwanz

Currently it does not show a Windows partition. It may be possible to recover windows if you had a windows partition in the past. It depends on what was done to the disks after it was erased.

I tried to just repartition it today, and start from scratch. It won;t let me do it.

Download the following two tools...

1. GPT Fdisk - http://sourceforge.net/projects/gptfdisk/

2. Testdisk - http://www.cgsecurity.org/wiki/TestDisk_Download

The first tool is installed and will be used in later stage of investigation. Testdisk is used to scan disks for potential recovery candidates. The directory in which you download Testdisk can also be used to execute it.

El Capitan has deleted my bootcamp windows partition has an example of using Testdisk.

I am not savvy with the computer language and have no idea what any of this means, and may need some extra help here.

Neither do I have Steve Jobs's DNA. 😉, so we should both be fine.

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Answer 4

treehuggwanz Author

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Nov 1, 2015 12:18 PM in response to Loner T

So you suggest downloading and running these testing tools?

My windows side may be recoverable?

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Answer 5

Loner T

Level 9

59,536 points

Nov 1, 2015 12:20 PM in response to treehuggwanz

Yes. Let us start with Testdisk and see what the scanning reveals.

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Answer 6

treehuggwanz Author

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Nov 1, 2015 2:04 PM in response to Loner T

Ok Loner,

Since I haven't the faintest idea what's happening, I will post my step by step.

I downloaded Testdisk 7.0 and loaded it up. I then pressed enter on 'Create new log file'.

Now I have some new options, and I don't know what to do next, and do not want to make a bad decision. So I will wait for your response. Here is a screenshot of what's next.

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Answer 7

Loner T

Level 9

59,536 points

Nov 1, 2015 2:06 PM in response to treehuggwanz

Tab over to the Sudo box and press enter. It will provide the necessary privileges to let you look at the entire disk. The software is not modifying the disk, but scanning. It is better to let it scan the entire disk (/dev/rdisk0) rather than a part of it.

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Answer 8

treehuggwanz Author

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Nov 1, 2015 2:12 PM in response to Loner T

Ok, I tabbed over to the sudo, enter the password. and it took me back to the original screen. I then entered 'Create new log file' or whatever it said and this is what it looks like now.