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Windows 7: Dual boot dirty bit problem

13 Nov 2015   #1
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 
Dual boot dirty bit problem

As a feasiblity test for a neighbor, I set up a Windows 7 + Windows 10 dual boot machine with each OS on different HDD's, intending to switch using BIOS boot menu. When I restarted I got a chkdsk message about corrupt drives - all partitons including system reserved seemed to have a problem. I clicked several times to cancel the check and everything worked OK, but obviously this isn't ideal.

The chkdsk problem didn't go away, so I let the checks/repair proceed and it found and corrected 1000's of 'errors'. Then I found the boot order had changed so the newest OS had priority regardless of BIOS setting. Chkdsk seemed to have screwed things up somehow.

I saw a solution online using cmd and ' chkntfs /x c: ' to reset the dirty bit, but the system reserved partitions don't have a letter. I know there's a standard way to dual boot, but I'm puzzled why my method doesn't work.

I seem to remember seeing this problem dual booting W8 and W7, but can't remember if I solved it.


My System SpecsSystem Spec
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13 Nov 2015   #2
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi
Disabling these 2 should help in 10
Fast Startup - Turn On or Off in Windows 10 - Windows 10 Forums
Hibernate - Enable or Disable in Windows 10 - Windows 10 Forums

You can also disable fast start in your bios
My System SpecsSystem Spec
13 Nov 2015   #3
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

The first link ThrashZone posted should solve the problem. I had the same issue and disabling fast startup in the OS solved the problem.
My System SpecsSystem Spec
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13 Nov 2015   #4
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 

Thanks guys. I disabled fast start in Windows 10 and in the BIOS - no more corrupt drive messages.
My System SpecsSystem Spec
13 Nov 2015   #5
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

Glad it worked out well for you.
My System SpecsSystem Spec
13 Nov 2015   #6
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Quote   Quote: Originally Posted by essenbe View Post
Glad it worked out well for you.


I would switch off hibernation as well except on battery power
Use sleep if you want to suspend
Also if you want to shut down use Winkey+X and use that shutdown listing there.
Cheers.
My System SpecsSystem Spec
14 Nov 2015   #7
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 

update : disabling fastboot in BIOS was not necessary in the end - just turning off fast start in Windows 10 was enough to stop the chkdsk error meassages.

Now my neighbor can use Windows 7 for general use, and experiment with Windows 10 until he gets used to it. Since the OS's were installed on different HDDs with their own system reserved, sometime in the future he can dispense with W7 and W10 will boot OK.
My System SpecsSystem Spec
14 Nov 2015   #8
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi,
Doing it in the bios is for good measure major 10 updates may reset some settings.
My System SpecsSystem Spec
14 Nov 2015   #9
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 

Point taken, although my last comment re BIOS was referring to after the big 10586 upgrade. I guess it's YMMV.

BTW on a different machine, the big update managed to break my hacked 'WMC/TV tuner on W10' malarkey, but I managed to get that fixed.
My System SpecsSystem Spec
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