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Windows 7: W7 resets bootable flag on HDD

19 Nov 2011   #11

Ultimate x64

I'm trying to persuade the MBR (that is from Windows) to always boot sda1 where is GRUB that gives me a choice of OS's. I can do this easily via fdisk from a live CD or via diskpart, however when I boot Windows again, it always resets the bootable flag to sda2, so I cannot boot to GRUB and have to use fdisk/diskpart again.

Anyway, after setting sda1 as active when I run Startup Repair, it fails: "Startup Repair cannot repair this computer automatically". bcdedit fails with the same message as above.

My System SpecsSystem Spec
19 Nov 2011   #12

Microsoft Community Contributor Award Recipient


Do what to dual boot Linux & Windows?
My System SpecsSystem Spec
19 Nov 2011   #13

Ultimate x64

Quote   Quote: Originally Posted by theog View Post
Windows can not boot from a Linux partition.
Right, it cannot. But GRUB can call another boot loader via chainloader.
My System SpecsSystem Spec

19 Nov 2011   #14

Ultimate x64

OMG, I'm an idiot. I was booting W7 with this command:
rootnoverify (hd0, 1)
chainloader +1
...that (obviously) made hd0,1, i.e. /dev/sda2, i.e. C: active on every boot. Removing this line solved the problem.

I apologize to everyone for bothering you with such a stupidity, that even couldn't be solved from Windows. Thank you for your patience!
My System SpecsSystem Spec
19 Nov 2011   #15

Windows 7 Ultimate SP1 64-Bit

You're very welcome.

Thanks for the update. Now I know a little more about Linux. :)
My System SpecsSystem Spec

 W7 resets bootable flag on HDD

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