The drive where Windows 8 Loader is installed is locked or System Reserved. Dual Boot Problem. Installing ubuntu 14.04 LTS on Windows 8 pre installed laptop, which has only one partition drive (C:) formatted with NTFS file system, where windows 8 loader is installed will be locked or system reserved. This is the location (/dev/sda1) where windows 8 loader is on. Following are the steps done to install the ubuntu, which makes the drive locked.
I am installing Ubuntu on Windows 8 laptop, where C: drive is the only primary and only bootable partition, formatted with NTFS file system. Remaining disks in the drive are not formatted. Total capacity of the entire hard disk is 500 GB. System partition drive (C:) has 160 GB of space.
While installing ubuntu, i don't see the option of installation type "Install Ubuntu alongside Windows", so i decided to select the type something else, where i can create and resize partition by myself. Then i installed Ubuntu successfully.
When i restarted my laptop, i am seeing the option Windows 8 (loader) on /dev/sda1, then i selected this option by pressing the enter key, Windows icons starts loading with message "Preparing Automatic Repair", "Diagnosing your PC" and check for disk errors. Finally, i found the message "Automatic Repair couldn't repair your PC". Press "Advanced options" to try other options to repair your PC or "shut down" to turn off your PC. Log file: \\?\GLOBALROOT\Device\HarddiskVolume2\Windows\System32\Logfiles\Srt\SrtTrail.txt
Then i selected to troubleshoot with Advanced option "Refresh your PC". Finally, Refresh your PC displaying the message "The drive where Windows is installed is locked. Unlock the drive and try again".
Recommended Solution: From Windows 8, create more than one partition with unallocated space, apart from the one dedicated Windows drive formatted with NTFS filesystem. Then start installing ubuntu on Windows 8.
Recommended: How To bring "Install Ubuntu Alongside them" installation type - https://www.youtube.com/watch?v=nJFOkNLBTuE
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