PC does not boot into Windows, but Ubuntu still works well; how to recover?

Question

I installed 7 operating systems in my PC. All worked very well. (Ubuntu 11, Ubuntu 14, EduBoss, Redhat6, Nodezero, Windows 8, Win 7). I frequently used Windows 8 and Ubuntu 14 last 6-7 months, I enjoy all operating system but one day after CHKDSK perform by Win7 my PC was unable to start with windows boot. If I try to start windows PC restarts very fast and shows nothing to any options just restart.

All other Linux O.S. work but no any other Win boot is working. As per my knowledge I guesses that problem occurred by file corruption or by CHKDSK operation by Windows.

Can I repair Windows boot option by Linux? (without win bootable disk)

• Architect i386
• 2 Gb ram
• Intel quad core
• OS. First I installed windows and then Linux.

Solution 1

One of the methods using Linux is to use fsck.msdos command which is found majorly in most of the Linux Distributions. While you've not mentioned that is there any error shown by Windows and, it is not mentioned too whether it is possible to boot into Safe Mode by pressing and holding Shift and tapping F8 repeatedly. Based on the dearth of information here, I advise booting into Linux, open the Terminal, and type:

• sudo fsck.msdos /dev/XYZ where XYZ is the partition where Windows is installed(say sda1).

There are many parameters available which can be accessed by typing fsck.msdos -h but the basic command should be able to correct your Windows.

If that went well, you will want to check whether Linux is able to detect Windows loader now or not. Besides, you need to generate a new GRUB configuration file too. I'm assuming the Linux you're booted into is running Grub 2.0. To Probe the Boot Loader, type the command:

• sudo os-probe, it shall give you an output like this:

/dev/sda1:Windows 7 (loader):Windows:chain

If you receive any such output, you can go ahead for building new Grub configuration file. In Terminal, type:

• sudo grub-mkconfig -o /boot/grub/grub.cfg, if your grub.cfg is at some other location then replace the path in the command with your file location.
• Type sudo grub-install /dev/sda where sda is my primary HDD having Windows and Linux installed.

Reboot, and choose Windows in Grub Menu. it should boot. If it doesn't we can try other methods but your question demands only Linux-specific solution.

Solution 2

Have you try Boot-Repair tool? It seems that your boot files were messed up by CHKDSK.

Comments

[Madhav Nikam]

madhavnikam@madhavnikam-Aspire-E5-511:~$ sudo fsck.msdos /dev/sda2 fsck.fat 3.0.26 (2014-03-07) Currently, only 1 or 2 FATs are supported, not 0.

[Madhav Nikam]

sudo grub-mkconfig -o /boot/grub/grub.cfg Generating grub configuration file Found linux image: /boot/vmlinuz-3.13.0-46-generic Found initrd image:/boot/initrd.img-3.13.0-46-generic Found linux image:/boot/vmlinuz-3.13.0-24-generic Found initrd image:/boot/initrd.img-3.13.0-24-generic Found memtest86+image:/boot/memtest86+.elf Found memtest86+image:/boot/memtest86+.bin Found Windows8(loader)on /dev/sda1 Found Debian GNU/Linux(7.0)on /dev/sda10 Found RedHatEnterpriseLinuxServerrelease6.4(Santiago) on /dev/sda12 Found Ubuntu11.04(11.04)on /dev/sda14 Found Ubuntu10.04.1LTS(10.04)on /dev/sda8 done

[Madhav Nikam]

madhavnikam@madhavnikam-Aspire-E5-511:~$ sudo grub-install /dev/sda6 Installing for i386-pc platform. grub-install: warning: File system `ntfs' doesn't support embedding. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: will not proceed with blocklists.

[Madhav Nikam]

windows boot problem not solve nothing do any new. PC still restart when try to run windows boot loader. But it upgrade GRUB loader with sequence of disk-part. any other solution for it?

[Madhav Nikam]

any other idea to solve that? can i repair by using Windows disc ? if by windows disc: can it affect GRUB >? YES then how to recover GRUB? I fail to solve that problem without windows disk. I think it is nearly impossible to solve that problem without windows disk. PLZ tell any other method to solve that.....

[Firelord]

I once mentioned the solution by using both Linux and Windows. Since you want method involving Windows Installation Disk , check here my answer. Look for Windows method in there. And yes, if you try WIndows Installation Disk, you will lose GRUb. But I also mentioned there how to reinstall it and get over with all the issues at once. I hope it helps. Do check the comments in my answer there to lead you better.

[Madhav Nikam]

i solve this problem by using win disk(both answers are very helpful).thanks problem solved.

[Madhav Nikam]

problem solved by win chkdsk thank you dear....

[Madhav Nikam]

friends my answers is depends upon previous two answers.

[Madhav Nikam]

above both answers are very useful.

[Madhav Nikam]

But it is nearly impossible that you can FIX windows boot problem without windows Boot CD.