Allright, Squirrel and Obi-Wan Kenobi, always appreciate being able to borrow your wisdom.
hiding partition letter: disk management > right click partition > Change Drive Letter and Paths > Delete letter so the partition disappears for the OS. My concern is if some programs can install stuff to the hidden partitions even if it was hidden.
It's not "hibernation" per se that causes problems, it's Fast Startup. When I was first running Win8.1 and the Win10 preview, I kept getting forced CHKDSKs every time I tried to access a shared partition from either OS. When I was running Win8.1 alone, I didn't have such problems.
Then, I read about Fast Startup. This forces Windows to go into hibernation even if you choose Shut Down and when this happens, all open partitions remain mounted, preventing access to those partitions from outside the Windows OS that was running.
There are two ways to disable FastStartup in Win8/10; (1) through the Control Panel, and (2) through an elevated command prompt.
Control Panel - Open Control Panel --> Power Options.
Select "Choose what the power buttons do"
Select "Change settings that are currently unavailable"
At the bottom of the Window, under Shutdown settings, uncheck the box regarding fast startup
Elevated command prompt - run the following command:
REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Power" /V HiberbootEnabled /T REG_dWORD /D 0 /F
In both cases, reboot Windows.
You will need to disable it BOTH in Win8x and Win10.
After I did that, I no longer had any filesystem problems.
@Cbarnhorst I am wondering why you say this, could you explain please? I have installed both OS's no matter what order and they worked fine.
i used powercfg -h off command in cmd recommended in http://www.sevenforums.com/tutorials...e-disable.html guide. option one, ''4. To Disable Hibernate'' which says: "This step will disable hibernation, delete the hiberfil.sys file, and remove the Allow hybrid sleep and Hibernate after Power Options under Sleep. This will also disable fast startup in Windows 8." Im not sure if i should do anything since i haven't encountered any problems so far.
Quote