Reparar particion que no sube en Windows 10

From command line on Windows Repair Tools:

bcdboot.exe n:\windows" where n: drive is drive of not booting Windows

Source: http://superuser.com/questions/976938/how-do-i-repair-windows-10-uefi-gpt-disk-which-is-left-unbootable-after-deleting

Useful article:

http://www.dell.com/support/article/us/en/19/SLN300987/EN

Windows 10If you do have the Installation Media :

1. Insert the Media (DVD/USB) in your PC and restart.

2. Boot from the media.

3. Select Repair Your Computer.

4. Select Troubleshoot.

5. Select Advanced Options.

6. Choose Command Prompt from the menu :

1. Type and run the command :

diskpart

2. Type and run the command :

sel disk 0

3. Type and run the command :

list vol

1. Verify that the EFI partition is using the FAT32 file system and assign a drive letter to it :

1. Type and run the command :

sel vol <number of volume>

2. Type and run the command :

assign letter=<drive letter>:

3. Type and run the command :

exit

1. In order to repair the boot record :

1. Type and run the command :

cd /d <drive letter>:\EFI\Microsoft\Boot\

2. Type and run the command :

bootrec /fixboot

If you don't have the Installation Media :

1. Restart your PC

2. Tap rapidly on the <F8> key once the PC has turned on, but before the Windows Splash Screen appears.

Please be aware this may take several attempts. The timing for this option was shortened significantly from that in Windows 7.

3. Select Repair your computer from the menu that appears.

4. Select Command Prompt from the Advanced Options tab in the Troubleshoot screen :

1. Type and run the command :

diskpart

2. Type and run the command :

sel disk 0

3. Type and run the command :

list vol

1. Verify that the EFI partition is using the FAT32 file system and assign a drive letter to it :

1. Type and run the command :

sel vol <number of volume>

2. Type and run the command :

assign letter=<drive letter>:

3. Type and run the command :

exit

1. In order to repair the boot record :

1. Type and run the command :

cd /d <drive letter>:\EFI\Microsoft\Boot\

...