Ubuntu cannot enter and boot order problem solved

Today came to work to find that Ubuntu can not enter, because there are more than n data backup, it was very urgent. But then it all worked out:

Background:

EASYBCD installs the ubuntu14.07 and Windows7 dual systems. Basically this more than a year has been using Ubuntu, to operate the network silver will switch to Win7.

Condition:

After you finish the boot screen of Windows, select Ubuntu and the results are not accessible to the Ubuntu boot page, the screen card has only one underline on the Black screen page. This is true after a reboot, but there is no problem entering windows on the boot page of Windows. An Ubuntu installation boot that was previously left can also be accessed.

Solution:

First go to Windows, backup Ubuntu file, because it is EXT3 format partition, Windows cannot load. We went to sourceforge download the Ext2explore software, first to the Ubuntu EXT3 partition important files back to Windows, in order to secure I also back up to the USB flash drive.

Then restart to the Ubuntu installation environment (if there is no installation environment, you can use the CD-ROM, or the USB stick boot, or use EASYBCD to do an Ubuntu installation boot boot. )

To redo grub in the Ubuntu installation environment, do the following:

$sudo  umount  -l/isodevice$sudo fdisk-l view hard disk partition

Find our Ubuntu Linux corresponding partition/dev/sda8

Then create a temporary directory based on this partition, mount, and create grub boot boot:

$mkdir /media/tempdir$mount /dev/sda8 space/media/tempdir$grub-Install - -root-directory=/media/tempdir Space/DEV/SDA

After the end of the restart, you can see the Ubuntu Grub boot page! After choosing Ubuntu, you can enter our previous system.

After entering, update grub:

sudo update-grub

At this point, the startup problem is resolved.

I personally like using Windows as the primary boot because Windows systems don't work very often and his boot doesn't go wrong. But after we re-made grub, it became Ubuntu boot windows, and the corrupted Ubuntu in Windows boot boot was not resolved.

This problem is resolved using the following method:

Reboot into Windows, start EASYBCD, delete the previously hung Ubuntu Boot and recreate one:

The name in the picture is arbitrary, such as filling ubuntu14.04

Drive Select our Ubuntu drive letter, the end of the matter lag click Add to repair the previous corrupted Ubuntu grub boot.

Then use Windows to boot Ubuntu with the following actions:

Save it and restart it to see the Windows Start-up screen first. After selecting the ubuntu14.04 we just created, we will not enter the Grub boot interface of Ubuntu.

This section is for reference: http://tieba.baidu.com/p/3182877071

Ubuntu cannot enter and boot order problem solved