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Windows 7: Does Win7 upgrade rewrite entire MBR?

05 Oct 2009   #1
GEWB

Several flavors of Linux (Mint primary) / 32bit XP, Win7 HomeP / 64bit Win7 Pro, Ultimate / 64Win8.1
 
 
Does Win7 upgrade rewrite entire MBR?

Next upgrade question: does the upgrade installer completely rewrite the master boot record?

I ask because the Adobe RoboHelp program writes authorization to the MBR (even though Microsoft says no program should do that) - if it gets blown out the app will not run and I'll have to jump through many hoops to get Adobe to re-activate it.

Regards,
GEWB


My System SpecsSystem Spec
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05 Oct 2009   #2
ccatlett1984

 

I would do a clone of the drive before installing then, just to be sure.
My System SpecsSystem Spec
05 Oct 2009   #3
GEWB

Several flavors of Linux (Mint primary) / 32bit XP, Win7 HomeP / 64bit Win7 Pro, Ultimate / 64Win8.1
 
 

Quote   Quote: Originally Posted by ccatlett1984 View Post
I would do a clone of the drive before installing then, just to be sure.
Thanks, I'll invest in another HD and do a clone (cheap insurance).

Regards,
GEWB
My System SpecsSystem Spec
.

05 Oct 2009   #4
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by GEWB View Post
Next upgrade question: does the upgrade installer completely rewrite the master boot record?

I ask because the Adobe RoboHelp program writes authorization to the MBR (even though Microsoft says no program should do that) - if it gets blown out the app will not run and I'll have to jump through many hoops to get Adobe to re-activate it.

Regards,
GEWB
Pretty sure win 7 does especially if you are dual booting. It has to create a boot menu.

ken
My System SpecsSystem Spec
06 Oct 2009   #5
sup3rsprt

XP, Seven, 2008R2
 
 

I agree with Ken. (although it won't overwrite the partition table so technically the MBR is not entirely overwritten. Likely just the code portion would be)

Just an idea, but maybe it will be easier (and cheaper) to back up the MBR rather than clone the entire hard drive. I know I've got some software around here that does this... I can't think of the name right of hand though, so I'll look for it and get back to you.
My System SpecsSystem Spec
06 Oct 2009   #6
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 

Quote   Quote: Originally Posted by GEWB View Post
Quote   Quote: Originally Posted by ccatlett1984 View Post
I would do a clone of the drive before installing then, just to be sure.
Thanks, I'll invest in another HD and do a clone (cheap insurance).

Regards,
GEWB
Hi there
you don't even need to do that -- backup the MBR with Acronis True Image or other imaging software. While you are at it backup the OS partitions as well. These can be backed up on to DVD / external USB drives so you don't need to buy another HDD just for this purpose.

Cheers
jimbo
My System SpecsSystem Spec
06 Oct 2009   #7
sup3rsprt

XP, Seven, 2008R2
 
 

some free tools to back up the MBR:

mbrsave, mbrtool, mbrwizard, mbrfix (included with EasyBCD 2.0), mbrsaver, or even a hex editor such as HxD can do it (although it won't be as easy to restore a hex backup unless you can boot off of another disk first)
My System SpecsSystem Spec
07 Oct 2009   #8
GEWB

Several flavors of Linux (Mint primary) / 32bit XP, Win7 HomeP / 64bit Win7 Pro, Ultimate / 64Win8.1
 
 

Thanks for all of the ideas!

Having worked with Windows since version 2 (on a 286-AT with 1MB of RAM), I have been burned and learned my leason...spare hard drives are cheap insurance when making a major change to the OS.

Regards,
GEWB
My System SpecsSystem Spec
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 Does Win7 upgrade rewrite entire MBR?




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