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: Inacessible C: Drive after Using NewSID

30 Jan 2013   #1

Windows 7 Ultimate x64 SP1
Inacessible C: Drive after Using NewSID

I just used NewSid to change my SID and after a reboot the c drive is inaccessible from startup repair.

Is their any way to undo this or have i just hosed my os.

I cant access system restore or anything in c drive.

My System SpecsSystem Spec
30 Jan 2013   #2

Microsoft Community Contributor Award Recipient


Are you able to get into the Advanced Boot Options menu? If yes, one of the options is Repair Your Computer > System Restore which may get your computer back.

Just an FYI, NewSID was "retired" on 11/3/09. Microsoft apparently fixed the SID problems with the release of Vista and with XP w/SP2. I don't think there's any reason to use NewSID unlessyou're using a Sysprep image of XP w/SP1.

System Recovery Options

The Machine SID Duplication Myth (and Why Sysprep Matters) - Mark's Blog - Site Home - TechNet Blogs
My System SpecsSystem Spec

 Inacessible C: Drive after Using NewSID

Thread Tools

Similar help and support threads
Thread Forum
Format & Partition New Drive to Use as a Backup Drive or Storage Drive
I want to prepare a factory fresh drive so that I can use it to save backup images. Soon I will have a second drive that will only be used to store data files. Neither drive will ever be used for the installation of an operating system. From what I've read, I see no advantage to having more than a...
Hardware & Devices
Ran NewSID on Windows7, Afraid it will crash on reboot.
Hi. I ran NewSID, a program that changes your SID with out any knowledge that it wasn't compatible with Windows7. After It ran for more then 4 hours, I became suspicious and after some googling found out that on reboot it will crash your whole OS. Since I still didn't reboot, Is there any hope for...
BSOD Help and Support
NewSID.exe HELP!!!!!!!!!
I ran NewSID.exe and then I couldn't find my administrator profile. I tried everything that I Could find, including doing the elevated prompt, net user administrator command, and I get the System error 5 occured message as two other posters had mentioned. I don't know what else to do. when...
General Discussion
Partition Hidden/inacessible.
Partition Hidden/inacessible First things first: I already now what my problem is: my partition doesn't have a letter assigned. But my second problem is that I CANT assign a letter to that partition. Here is what it looks like when I go to Computer -> Manage -> Disk Management and try...
General Discussion
Usig Sysprep to replace NewSID please help
Hi guys, first time poster here, so sorry if I have posted in the wrong forums. I have a few model specific windows 7 images that were created using Ghost. I used to use NewSID to generate new SIDs for my XP OSes, but from what I have read, NewSID will destroy a Windows 7 machine. I looked for...
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 13:04.
Twitter Facebook Google+