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: Invalid system partition

13 Mar 2013   #41
Rave79x

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by SIW2 View Post
Boot 7 dvd to system recovery options command prompt. Type:

Diskpart

lis vol

( find the vol letter e.g C or partition number e.g. 1 for the system partition )

sel vol C ( or sel vol 1 , obviously use the correct letter or number)

act

exi

see if that helps.
After doing the above, I also got BOOTMGR is missing
Press Ctrl+Alt+Del to restart

But after I ran Windows Recovery again twice (it did something a little differently each time) I managed to boot in.

I also replaced the Sata and power cable to my system drive as a precaution.

I suspect a cable just came loose though because this happened after I disconnected a backup HDD.

Am wary of a hardware issue though so am taking plenty of backups.

Thanks for your help in this thread.


My System SpecsSystem Spec
.
21 Apr 2013   #42
gasrange

Windows 7 Ultimate x86
 
 

How would I go about tackling the issue if doing Diskpart; lis vol does NOT display my Windows partition that needs repairing?
My System SpecsSystem Spec
21 Apr 2013   #43
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

You might try free partition wizard bootable iso.

If that doesn't see the partition, try the partition recovery feature.

Tick ALL partitions you want , then Apply.

Free download Magic Partition Manager Software, partition magic alternative, free partition magic, partition magic Windows 7 and server partition software - Partition Wizard Online
My System SpecsSystem Spec
.

21 Apr 2013   #44
gasrange

Windows 7 Ultimate x86
 
 

ty, that worked like a charm. now i see the partition i want on diskpart lis vol.
Going further down the above instructions, 'act' gives me an error saying the specified partition type is not valid for the operation (i did sel vol on the right partition). the info on the volune is:

Fs: NTFS
Type: Partition
Size: 106 GB
Status: Healthy

It is a partition restored with winclone with an image of a partition i used to boot off of all the time...

Thank you in advance for your help.
My System SpecsSystem Spec
21 Apr 2013   #45
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

It is probably a logical drive.

You can convert it to Primary with partition wiz.

Rt click it and select Modify>Set partition as Primary.

( If it won't allow that, you already have 4 partition slots taken up )
My System SpecsSystem Spec
22 Apr 2013   #46
gasrange

Windows 7 Ultimate x86
 
 

that set me on the right track, and i got my partition back the way it was.

thank you scholars for your gentlemenly help.

may your days brim with joy and exhuberance.
My System SpecsSystem Spec
14 May 2013   #47
segwayglider

windows 7 ultimate 64 bit
 
 

Hi there - I'm needing help as well. This thread is very informative. I have a SSD drive as well and all of a sudden my system wouldn't start up - just a black screen. I disconnected all drives and everything else and then is said to insert bootable material. I used the win 7 DVD and used the act command in diskpart with the right volume selected. After the reboot it now says bootmgr is missing hit ctrl+alt+del to restart. So I try to run the repair section on the win DVD and it says the version of windows on the disk is incompatible with the win disk. I know its the same win version. What do I do? I do have a USB device I can put the SSD drive into on another computer (did this first to make sure the data was still on the SSD when I first noticed a problem). Thank you a ton for your time!

Pat

I just figured out that the win dvd repair tools will work if the SSD partition is not active. Once I set that partition to active I get the "not compatible" message and the repair tools wont load. Kinda stuck in a loop here. ???
My System SpecsSystem Spec
28 May 2013   #48
Lajamoto

Win 7 Home Prem 64bit
 
 
Big Thanks to SIW2

Quote   Quote: Originally Posted by Remz086 View Post
Quote   Quote: Originally Posted by SIW2 View Post
That's fine - you might fix it with running startup repair 2-3 times,
or use cmd prompt again and type:

bootsect /nt60 all /mbr

then press enter.
k, lol at press enter. I deserved that though. im a freaking zombie today.
Just had to send a big thanks to SIW2 for taking the time to help so many people. i also had a boot error with Win 7 after playing around with my partitions. i had installed Win 7 64-bit on a new HDD and was dual booting my pc with an older HDD running Vista 32-bit. I dual booted to copy over all my files and pictures. I then erased the old driver and began to setup the new OS to leverage the old HDD as a backup drive. Win 7 backp utility failed everytime and threads indicated modifying partition sizes. This caused system to loose boot and in turn make the disk fail. Thanks to your instructions i was able to make my drive active again, ran startup repair 3 times just as you said and I am back in business and my wife will not kill me for loosing several thousand pictures and several hundred gigis of music.
My System SpecsSystem Spec
28 May 2013   #49
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Thanks for letting us know. Glad it worked for you.
My System SpecsSystem Spec
18 Aug 2013   #50
Purplequavers

Windows 7 Home Premium 64-bit
 
 
URGENT: Is this safe for SSD? Please help!

Quote   Quote: Originally Posted by SIW2 View Post
Boot 7 dvd to system recovery options command prompt. Type:

Diskpart

lis vol

( find the vol letter e.g C or partition number e.g. 1 for the system partition )

sel vol C ( or sel vol 1 , obviously use the correct letter or number)

act

exi

see if that helps.

Hi SIW2, or anyone else able to please help me!!

I have received the same message in Windows Startup repair: "The partition table does not have a valid system partition"
Repair action: Partition table repair
Result: Completed successfully

The system restarts but still will not boot windows. It only loads up to the windows install / repair screen. If I take out the Win7 CD and restart, I get the message "Reboot and select proper boot device or Insert Boot Media in selected boot drive and press a key". The BIOS IS detecting the SSD and it is the top of the boot order list.

So my main question is - I want to try your fix, but is it OK to do it on an SSD drive?

I dont know much about partitioning or how it works in detail. I'm pretty sure my drive wasn't partitioned before because it would have shown up as 2 drives in windows? (3 if you include my Samsung HD)

Back story / System spec:
Custom build PC
Windows 7 Home Premium 64-bit
Intel Core i5 CPU 760 @ 2.80GHz
ASUS P7H55-M PRO
Hard Drives
OCZ-VERTEX2 SATAII SSD 80GB
SAMSUNG GD103SJ 1TB
WD EXTERNAL 1TB
Case: Cooler master
Cooling : Water cooled

What happened:
My friend built this PC for me 3 years ago. I did not know that you weren't meant to defrag an SSD drive. I defragged my C drive (SSD with Windows installed) then it would only load to Windows welcome, then white screen, no desktop icons, nothing except the cursor this is pretty stressful for me as I work from home as a professional music composer and this is my main machine to work on. My laptop is pretty useless.

He said try inserting Win7 DVD and using windows startup repair. I did this and got the partition info message I mentined above, but although it says it was successful, I'm not getting any further.

All my work is backed up but I do not have a recent system restore point and no system image so I'm trying to avoid having to reinstall everything.

Also I should note that I am technically minded and good at following technical instructions, but am in no way a computer expert so please tell me everything in laymans terms and please dont use acronyms unless my computer shows it as an acronym e.g. BIOS!

Thanks so much for your time reading this!

Purple
My System SpecsSystem Spec
Reply

 Invalid system partition




Thread Tools




Similar help and support threads
Thread Forum
Get invalid partition table while trying to install win from usb
Hi all, I've tried several ways to format and copy my win 7 installation into the USB. I've also tried this tutorial and this tutorial, but it always says invalid partition table while booting. I've putted the USB-HDD first in the priority on the bios boot priority. Could it be my...
Installation & Setup
Invalid Partition Table
I have been running Windows 7 Ultimate 64-bit for a loooong time and all of a sudden the other day while starting my PC I got a black screen (prior to windows loading) and the "Invalid Partition Table" Error. I have ran the WIN 7 fixers with zero luck bootrec /fixmbr bootrec /fixboot...
Hardware & Devices
invalid partition table
Hi all i am new to the forum, my problem is that i am running windows 7 32bit on my kids pc, but on my pc i am running windows 7 64bit. the problem is on my kids pc - don't know what they have or haven't done to it, but it won't boot up in windows and keeps saying invalid partition table. when i...
General Discussion
Invalid System Partition Problem
Hallo, So a couple days ago my Windows install decided to go kablooey. (I am dual-booting 7 and openSUSE but I'm removing SUSE once I fix Windows) I determined the cause to be an "invalid system partition." I found another thread involving some business about diskpart in the command line, so...
Backup and Restore
Partition invalid?????
Can anyone help please I have windows 7 installed into the only hard drive I have which is a 2tb, when I turn on my computer it won't load to windows instead I get a message: reboot and select proper boot device In system repair it says root cause found: boot sector code for system partition...
Hardware & Devices
Invalid partition table
also i can't run the Cd-rom for repairing....
General Discussion


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 04:25.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App