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Windows 7: help: windows 7 won't boot after changing active partit

20 Jul 2009   #1

vista 32bit - win 7 RC
help: win7 won't boot after changing active partition

i have three partitions. P1) 1 logical with windows 7 RC, P2) 1 primary and system, (not clean install) with windows 7 7600, and P3) 1 primary with windows 7 7600, (formatted partition before installed).

my problem happend when i tried to set the active partition from "P2" to "P3" using EASEUS. I used "P1" while doing this. after restarting, my machine won't boot. It shows the manufacturer logo, and then followed by a black screen with a flashing cursor on the upper left corner, doing nothing. i let this stand for ten mins but, still, nothing happens. is this normal? i also noticed the manufacturer logo showing a little longer than usual.

after 10mins, i decided to restart my machine but the same thing happens. i managed to make a repair disc before this happen. so, i boot in to the repair disc. i tried startup repair but nothing changed. i tried setting the active partition again using CMD. i also tried system restore to "P1" which i used to open EASEUS. and it also failed.

any ideas what went wrong? and how i can fix it? thanks guys!

My System SpecsSystem Spec
20 Jul 2009   #2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

Boot the 7 dvd/recovery disc to the system recovery options and select command prompt.

Type the following at the prompt: ( press enter after each command)

( replace vol 2 below with the volume number you wish to mark Active )



Disk 0 is now the selected disk.


Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 1 C New Volume NTFS Partition 30 GB Healthy System
Volume 2 D New Volume NTFS Partition 25 GB Healthy
Volume 3 E 7000 x86 NTFS Partition 23 GB Healthy
Volume 4 G Data Logica NTFS Partition 40 GB Healthy
Volume 5 H Backup Logi NTFS Partition 30 GB Healthy


Volume 2 is the selected volume.



close cmd prompt.

Try restarting or startup repair after that.
My System SpecsSystem Spec
20 Jul 2009   #3

vista 32bit - win 7 RC

whoah! it worked. i don't know why it didn't work the first time i tried it. haha. your steps might have some sort of geek spell. thanks clint eastwood. errr SIW2. your the man. haha.
My System SpecsSystem Spec

21 Jul 2009   #4

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

Yeah, it's magic. LOL.

Glad everything worked out
My System SpecsSystem Spec
19 Feb 2010   #5


Dear SIW2,

my problem quite same like RAKCS but the problem is that i don't have recovery disc n if i have it, still can't use the disc coz' my laptop ' mini HP doesnt have cd/dvd rom ( it's suck ). i've been trying to boot from usb hard drive, doesn't work.

please help me. thaaaaaaaaanks
My System SpecsSystem Spec
19 Feb 2010   #6
Microsoft MVP


Download the recovery disk from here: Download Windows 7 System Recovery Discs — The NeoSmart Files

Write it to USB flash stick using this: USB Windows 7 Installation Key Drive - Create

Boot USB flash stick using one-time BIOS boot menu key. It may be listed under Hard Drives.
My System SpecsSystem Spec
19 Feb 2010   #7

Microsoft Community Contributor Award Recipient


My System SpecsSystem Spec
07 Aug 2012   #8

Windows 7 Home Basic

Dear SIW2 ,

DISKPART works everytime n had once saved my day :)
My System SpecsSystem Spec

 help: windows 7 won't boot after changing active partit

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