Q: Upgraded to Yosemite and now my Bootcamp Partition is not being recognized
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Dec 3, 2015 9:05 PMby Judd44,I disabled csrutil and ran through the procedure again and when I got to "w" I got further and this is what I got
fdisk:*1> w
Device could not be accessed exclusively.
A reboot will be needed for changes to take effect. OK? [n] y
Writing MBR at offset 0.
fdisk: 1>
I rebooted and I'm not seeing the Bootcamp partition in Finder or in DiskUtility
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Dec 3, 2015 9:13 PMby Loner T,If you have your original Windows installer (or the USB installer created by BC Assistant) you will need to boot from it, and run chkdsk in command prompt, to see if it can be repaired. You may also need bootrec.exe, if chkdsk is successful.
https://neosmart.net/wiki/chkdsk/
https://neosmart.net/wiki/bootrec/
There are corresponding M$ articles
https://technet.microsoft.com/en-us/magazine/ee872425.aspx
https://support.microsoft.com/en-us/kb/927392
I may not be available for the next few hours.
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Dec 4, 2015 5:10 AMby Judd44,I couldn't boot up from the usb installer and this is a work computer that I need to have running (even if it means losing everything I had on the windows side). So I went to the bootcamp assistant to try to remove my windows partition and restore back to a full mac partition on the hard drive and now not even that will work. When I try to restore disk to a single volume I get this error
Your disk could not be restored to a single partition...An error occurred while restoring the disk to a single partition.
Do you have any advice on how to restore the hard drive so I can re-install a fresh version of windows through bootcamp?
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Dec 4, 2015 5:34 AMby Loner T,It can done in Disk Utility using CLI or the simplest and safest method to have only OS X on your Mac is
1. Backup OSX and all your files - Use Time Machine to back up or restore your Mac - Apple Support .
2. Boot into Internet Recovery (Command+Opt+R) - OS X: About OS X Recovery - Apple Support .
3. Click on Utilties -> Disk Utility and Erase your internal whole disk.
4. Restore OSX and your files - Use Time Machine to back up or restore your Mac - Apple Support .
This requires a separate external disk which can accommodate TM backup - Backup disks you can use with Time Machine - Apple Support .
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Dec 4, 2015 6:15 AMby Judd44,So I tried to erase the whole disk after rebooting in recovery mode and even that failed. I got
Erasing Hitachi (my mac's hard drive) and creating "Untitled" ( ididn't name my new drive)
Eraswe process has failed. Press Done to continue
and under details it says
Unmounting Disk.....
Couldn't open device
Operation failed
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Dec 4, 2015 7:37 AMby Loner T,If you are using a wireless connection, try a wired connection for Internet Recovery. You can also try this from Utilities -> Terminal and choose the appropriate value of 'N'.
diskutil eraseDisk jhfs+ Untitled GPT diskN
diskutil erasedisk
Usage: diskutil eraseDisk format name [APM[Format]|MBR[Format]|GPT[Format]]
MountPoint|DiskIdentifier|DeviceNode
Completely erase an existing whole disk. All volumes on this disk will be
destroyed. Ownership of the affected disk is required.
Format is the specific file system name you want to erase it as (HFS+, etc.).
Name is the (new) volume name (subject to file system naming restrictions),
or can be specified as %noformat% to skip initialization (newfs).
You cannot erase the boot disk.
Example: diskutil eraseDisk JHFS+ UntitledUFS disk3
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Dec 4, 2015 7:44 AMby Judd44,A quick question first... My current drive is named Hitachi HTS545032B9SA02 Media, I was trying through disk utility to erase and rename it Untitled. so when I type out the command line you told me do I have to type diskutil eraseDisk jhfs+ Hitachi HTS545032B9SA02 Media GPT disk0 ? (the drive has a BSD Device node of disk0) ? Or is the "Untitled" part of the command line what we're renaming the new drive?
