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Help!
After upgrading to Yosemite, and now when I ALT Boot Windows 7 and Recovery partitions no longer show up. Is there any ways to get my data in the disk back?
The Disk Utility is like this:
Following Loner T, I tried some commands, It shows like this:
Failing loss the material, here I seek help from Loner T
Thanks ! Waiting online
MacBook Air, OS X Yosemite (10.10), dual system: mac and win7
Here is the output:
Ok, do you mean if I re-install the Mac OSX, I can also enter my windows system? If the apple_boot can be fixed up, does it mean I can get back the mac system?
I wish the last choice is re-install the system Mac or startup repair the windows. If re_install is the only choice, should I take the startup repair of windows or re-install the mac system first?
another question is can we just re-built the apple_boot file?
Please reinstall Yosemite first. Windows can be fixed when the internal disk can be accessed. Make sure you pick the correct partition to re-install OSX. Do not erase the internal disk at any cost, otherwise Windows will be lost.
so, what I should do now is reboot the computer without USB drive, and hold the option+command+R when start showing :
it shows four options:
1, back up from time Machine to repair
2. re-install OS X
3. require online help
4. disk utility
and I choose the re-install OSX, right?
also I want to make sure is the patition I can re-install MAC system is the used-being MAC system (D: disk) in the past?
Yes, use Option 2, and select Macintosh HD.
during reinstall, it shows only like this
I cannot see the image. Can you post the image using an external image sharing site, like IMGUR?
Osx cannot be installed at Macintosh HD
Can you erase just Macintosh HD, nothing else?
Only this one , no other else, when I insert USB drive, it is like this
This is installing Mountain Lion, not Yosemite. This means you have to install ML and then upgrade to Yosemite. Do you want me to give you commands to erase just the Macintosh HD?
You should not plug-in the USB when using Command+Opt+R.
IIs this the only choice?!
I do not see any other choice. You have a CoreStorage volume that is not working.
Can you post a text version of diskutil cs list?
sorry for replying you late. Here are output of diskutil cs list
wuguangtoshitekiMacBook-Air:~ wufuting$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group F4627B26-9663-428D-B24D-79F2674CFC4F
=========================================================
Name: Macintosh HD
Status: Online
Size: 99999997952 B (100.0 GB)
Free Space: 35704832 B (35.7 MB)
|
+-< Physical Volume 5B688642-1804-45DD-9147-F94B029BFCED
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 99999997952 B (100.0 GB)
|
+-> Logical Volume Family 6495004B-0FA7-4E33-9F10-5231C7ACF924
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 1DD574BE-C033-4FCE-9AED-60A26EB58BB4
---------------------------------------------------
Disk: disk1
Status: Online
Size (Total): 99628744704 B (99.6 GB)
Size (Converted): -none-
Revertible: Yes (no decryption required)
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
I dare not erase the mac system by myself. It seems a big matter.....
My macbook has broken down for one week, now even worse, I have nearly exhausted😟
The following commands will erase your CoreStorage OS X installation.
1. Delete the Macintosh HD volume - diskutil cs deleteVolume 1DD574BE-C033-4FCE-9AED-60A26EB58BB4
2. Delete the Macintosh HD volume group - diskutil cs delete F4627B26-9663-428D-B24D-79F2674CFC4F
3. After these two steps post the output of diskutil list and the OS X volumes can be re-built. Then you can reinstall Mountain Lion, recover Windows and make a backup of Windows. I would suggest not using Yosemite at this point.
4. Once you have Windows recovered and backed-up,the whole disk can be erased and a clean install of Yosemite and Windows to provide a stable machine.
Missing bootcamp win7 after updating the mac to OS X Yosemite
