Without AVGARDISK, Windows won't boot!

Dear All,

I'm facing the same problem, I will give a short description of my system installation:

Bootloader: Grub2, but all time, the mbr 446 bytes saved with dd, in every state, it means that i can restore a difrent OS bootloaders, any time, with Sysrescd Live spin.

ATTENTION: dd can destroy the whole data on your hdd, if you don not know how to use it.

(Remark: If you try to install Sp1 to Win7, you need it's own ntldr bootloader in mbr, with grub2 in mbr, you can not install sp1 to win7.)

My goal of installation should look like this:
/dev/sda1 (active boot flag) = fs type ext4 Centos 7
/dev/sda2 = fs type ntfs (drive c:\) - Windwos 7 x64 SP1
/dev/sda3 = fs type ntfs (drive d:\) - Windwos 7 x86

The problem is with /dev/sda3 - can not boot avgrdisk.sys, bricks the system.

Installation order:

1st sda2 Windwos 7 x64 - Devops workstation (AVG FREE installed)
2nd sda1 Centos 7 - I need linux, because it never fails, resistive to viruses ;)
3rd sda3 windows 7 x86 - Compatibility to old 32bit devices.

My installation technique is, I set active boot flag to sda3 and change partition type sda2 partition type to Hidden NTFS because this way the windows installer will not see the other windows system instance. I prefere to use Grub2 to manage the boot targets, instead of windows built in.

On sda3, at the end of the installation of win7 x86, the local user account created finally. After reboot the Windows 7 x86 on sda3 can not load avgrdisk.sys. Bricked.

Remeber: sda3 is ntfs + bootflag set, sda2 invisible fstype hidden ntfs.

What to do now?

I restored the Centos 7 boot record using Sysrescd live spin with the command "dd if=/path/to/mbr446.centos7 of=/dev/sda bs=446 count=1", set my active boot flag to sda1. Set sda2 fstype back to ntfs.

With this configuration: Centos 7 boot = OK!

Grub2 loads well Win7 x64 Sp1 with custom conf:

menuentry "Windwos 7x64" {
set root=(hd0,2) # First HDD, 2nd partition
chainloader +1
}

Win7 Sp1 x64 System is running and healty. OK!

Let's try to load the new install: Windows7 x86

menuentry "Windwos 7x86" {
set root=(hd0,3) # First HDD, 3rd partition
chainloader +1
}

Win7 Sp1 x64 booted instead of Win7 x86!!!

Cofiguration 100% -ok, My laptop uses the same boot configuration.

At this point, I decided to load back the MBR record of win7 x86 and set sda3 bootflag active, set sda2 to hidden ntfs (revert back to post installation partition schema of Win7 x86).

I can not figure out why Bricked on loading avgrdisk.sys after succesfully avgbuniv.sys and avgbidsh.sys was loaded to the system.

But wait a minute, How it possible that a fresh install of Win7 x86 (never logged into the desktop) loading succesfully avgbuniv.sys and avgbidsh.sys while the other Windows7x64 on sda2 filesystem is set to hidden ntfs.

After checking with Centos7 the avgbuniv.sys and avgbidsh.sys not exist on sda3 (Win7 x86).

I uninstalled AVG Free from Win7 x64 while MBR was also restored to it's own ntldr, still unable to boot Win7 x86. No success.

What should i do? Should I reinit the whole HDD with /dev/zero? I'm very upset.

My Question is: During AVG install, where are avgbuniv.sys and avgbidsh.sys registered to?

p.s.: I use a free version of avg, as i see this topic is older than one year, probably my solution is to add another HDD to the workstation, and boot with grub2.

But this solution is like the same as your car's engine failed, nobody can repair, so the solution is to buy another car?!

The real solution should be try to look another repairmen or service station, how knows the know how, how to repair.

Sincerely waiting to your kindly solution.

The world would be much better with Unix systems... and i wasted 5 hours to investigate this matter, instead of working on my k8s threads. Now I'm going to look for an unused sata hdd in my basement.

Wish better luck.