Page 3 of 3 FirstFirst 123
  1.    27 Jul 2015 #21
    Join Date : Oct 2013
    Penns Forrest
    Posts : 3,506
    Win_8.1-Pro, Win_10.1607-Pro, Mint_17.3

    Quote Originally Posted by dencal View Post
    Just chipping in with my own experience of dual booting W8.1 and W10 Preview latest two versions on two separate SSD,s both connected in the computer.

    Each update messed up the MBR on both systems.

    Have overcome the problem by hot swopping, one in one out.
    Yeah, I'm working up a procedure to grow the System Reserve partition on MBR initialized disks from what Win7 and Win8.1 create when they are installed 100 MB (steal 350 MB from C:, move C: to the right, then add the 350 MB to SysReserve = 450 MB).

    It's fairly easy to do, not so easy to document

    I had issues and a few other members got past install issues by doing this.

    My 450 MB System Reserve only has 28% free space now - the contents are definitely larger than 100 MB

    Click image for larger version. 

Name:	sysResDiskMngt.png 
Views:	3 
Size:	3.4 KB 
ID:	26150

    The size returned by dir /a /s doesn't match the above usage. There's a Recovery and the the System Volume Information folders that don't seem to be included in the dir count though

    Total Files Listed:
    93 File(s) 19,064,138 bytes
    137 Dir(s) 133,562,368 bytes free

    GPT initialized disks are not affected, one member reported that a new 450 MB System Reserve was created to the right of their C: drive. I suppose MS determined it was too difficult to affect MBR disks at install time due to the 4 partition limitation - most OEMs use all four (System Reserve, Windows, Recovery, Utility???).

    The Technet MBR disk schema recommends 350 MB for a combined System Reserved / Recovery partition, so I just used that as a base and added 100 MB for good measure.
      My System SpecsSystem Spec

  2.    28 Jul 2015 #22

    I just got this back from Microsoft Insider: (Interesting that you can type with an accent.)

    There seems to be not clear somewhere.
    How did you install Windows 10, wiht dual-booting Windows 7 SP1 (laptop dual-booting?) and Windows 8.1 (Desktop dual-booting ?)?
    If you have Windows 10 both clean installed on your machines, then you will get newer builds only if you stay as the Insider, for free. Otherwise, you could just get the free from upgrading Windows 7 SP1 or Windows 8.1.
    If your current Windows 10 is upgraded from an earlier operating system (not include Enterprise), then there is not so much aspects to worry about.
    We may make bootable media for recovery after the official release of Windows 10.
    Then clean install would be OK on your verified machines, with your registered Microsoft Account.
    Any further concerns, please feel free to post back.
      My System SpecsSystem Spec

Page 3 of 3 FirstFirst 123

Similar Threads
Thread Forum
Solved Reinstalling Windows 7 on 7/10 dual boot breaks dual boot
I installed the 10 tech preview along side my win 7 ultimate, I reinstalled, the Windows 7 side of the HDD because after however many years the OS had a LOT of clutter, and even though windows update was a nightmare I finally got all the updates...
Installation and Setup
Solved No boot menu on dual boot WIn8.1↔10
HIYAS I have installed Win10 on secondary partition while keeping Windows 8.1 as primary. Everything went fine, after few reboots Win 10 was ready to use. After setting up things I rebooted, In boot manager I have two entries - Windows 10 as...
Installation and Setup
Solved Dual Boot Win 7 pro and Win 10
I have new computer win 7 pro with all SSD. I plan to Install Win 10 onto a separate SSD (Samsung 500gb) and will just unplug my C Drive SSD with Win 7. The C drive SSD is also 500gb Samsung but only 152gb left on that drive. Any Comments /...
Installation and Setup
Convert dual boot install to normal boot
After several weeks of testing I'm ready to go full on Windows 10 and want to get rid of Windows 7 but I have some partitioning issues I want to clean up. I currently have Windows 7 on drive 0 (360 GB) and Windows 10 on drive 1 (500 GB). Both are...
Installation and Setup
dual boot win 10 ent with win 10 pro
I have the win 10 enterprise preview edition but want to end up with the pro version. Can these 2 be installed at the same time?
Installation and Setup
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 10:59.
Find Us
Twitter Facebook Google+

Windows 10 Forums