Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: win7 sp1 switch my boot drive...

23 Mar 2011   #1

windows 7
win7 sp1 switch my boot drive...


I want to know, i what happened to me today, if it's happened to someone else too.

Yesterday, i installed win7 service pack 1, the installation goes well and have a message that sp1 was succesfully install.

Today, i turn on my computer, and i realize that my desktop was my old desktop, old shorcut... After searching a lot, i realize that my hard drive letter are change.
I have 2 harddrive,(C and F)
So after the update(sp1) my hardrive letter C became letter F and F became C ... Strange no?

SO what i did is: Go in the BIOS, change my boot Drive, and all was correct.

Do you know why that happen.


My System SpecsSystem Spec
25 Mar 2011   #3

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

If I understand you correctly, windows changed the Disk numbering.

If that is what you mean - don't worry, it is a known windows glitch.
My System SpecsSystem Spec

25 Mar 2011   #4

Win 7 64

OK. How does one fix the known glitch?

Secondary question (retorical I suppose) why doesn't MS fix these things with their monthly downloads? Why should there be "known glitch" present in production software?
My System SpecsSystem Spec
25 Mar 2011   #5

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

Because they can't. It has been around a long while.

The disk-assignment numbers may not necessarily match the corresponding SATA or RAID channel numbers. There is no assurance of a consistent relationship between PnP enumeration and the order of the hard disks that are detected during setup. Devices are presented in the order in which they are enumerated. Therefore, the disk-assignment numbers may change between startups.

You will need to change the bios boot order for your HD's or set the o/s you want as default in boot menu, or mark the drive you don't to boot thru inactive.

We can't see what you have done - if you post a scrrenshot of disk management , that would help.
My System SpecsSystem Spec

 win7 sp1 switch my boot drive...

Thread Tools

Similar help and support threads
Thread Forum
I want to switch my win7 ult image/backup drive to a larger one
:banghead: I have a 320GB image/backup drive giving me 'low free space', and want to replace it with a 500GB drive. I thought I could just copy/paste the files into the 500GB drive but they are not there (o byte files). Tried researching for hours but all I could find was info on how to install...
Backup and Restore
How to switch/rename boot partition to keep it as C: different drive
Long Story short I got a laptop with an HDD where I originally installed windows 7 (on C:). I purchased an mSata SSD drive and cloned the HDD to the mSata as I would like to use it for OS and most used programs (for obvious performance reasons). Now I got: Boot set to Disk0 Partition C:\ (HDD)...
Installation & Setup
Working backup Win7 boot drive, need to fix main Win7 boot drive
Earlier today, I thought that I wanted to run a the Repair Install (as per that tutorial) to a non-booting Windows 7 (64 bit) installation on a physical drive (my SSD) which is different than the drive to which I can currently boot. That is, I can currently boot to an older installation of...
General Discussion
Dual Boot Win7 32bit and Win7 64bit on a second SSD drive
Hi folks. I have searched through the various threads that deal with this topic but have not seen anything that deals with this specifically. I have a custom built computer I put together last year. I installed Win7 32bit at the time because I didn't want to bite the bullet and reinstall...
Installation & Setup
Win7/Win7 Dual Boot drive letter trouble
Hello all... My goal is to run a Win7/Win7 dual boot system with one installation for day to day operations (MAIN) and then second installation strictly for gaming (GAMER). I have successfully installed Win7 twice. During clean install i created 30GB partition (C: ) and put MAIN there. No...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 18:21.
Twitter Facebook Google+