Partition resized, Windows 8.1 not booting, UEFI

[killer_cain]

Hi all,

Ok, I have a new lenovo ideapad 305 (system is UEFI boot), I used minitool partition wizard to resize the c: & d: drives (to increase space on the D) but didn't touch anything else, rebooted into windows & it seemed nothing had changed, so I booted up by USB and the partitions were exactly what I had changed them to. Thinking this was really weird, I tried rebooting & have not been able to get into windows since.
I have tried recovery through the windows 8.1 cd but it does not recognise the partitions at all! So I can't even use diskpart or the like, I have tried several boot recovery tools, some see the partitions & some don't, so I guess I need to make the partitions UEFI-enabled? I'm not fully savvy with UEFI & I've tried every piece of advice I could find, but i'm stuck, any clues?

Thanks for any help!

 

[blobster21]

If i were you, and assuming your partitions are still here and only unreachable (for whatever reason), then i'd move on to reinstall Windows 8.1 Bcdstore from scratch.

here's the how to : http://rajandmk.blogspot.fr/2012/09/how-to-create-clean-bcd-file-to-fix.html

I have done this a dozen times already and it works pretty well ! It's designed for Windows 7, but works just as well with windows 8/8.1/10

You will be working to ressurect your harddrive using Windows 8.1 boot CD, the idea is to reach the command line and follow the instructions mentionned previously :

No need to wish you good luck, you'll make it !

 

[95Viper]

If you have the One Key Recovery on the IdeaPad:

FAQs

If Windows cannot be started, how to start the Lenovo OneKey Recovery?
Shut down the computer. Press the Novo button. From Novo Button Menu, select System Recovery and press Enter.

Where are the recovery discs?
Your computer did not come with any recovery discs. Use the Lenovo OneKey Recovery system if you need to restore the system to its original factory status.

What can I do if the back-up process fails?
If you can start the backup but it fails during the back-up process, try the following steps:
1. Close all open programs, and then restart the back-up process.
2. Check to see if the destination media is damaged. If yes, replace the damaged media. Otherwise, select another destination path and try again.

When do I need to restore the system to its original factory status?
A: Use this feature when the operating system fails to start. If you have any critical data on the computer that you want to save, back it up before starting the recovery process.

System cannot start up- The Microsoft® Windows operating system does not start.
Use the OneKey Recovery system to restore the system partition to its original status or a previously created backup point.

Or, if you have the recovery disks use them.

 

[killer_cain]

Thanks for the reply, but I can't even get access the Bcdstore! I've realised the command prompt is useless as it cannot see any partitions.

I've gone through the BIOS, tried disabling secure boot, swapping between UEFI First and Legacy First, but cannot get the windows dvd (I've tried the windows 8.1 dvd (don't have the repair disc)) to see the partitions or even refresh or reset, it gives the error "the drive where windows is installed is locked" or "unable to reset your pc. a required drive partition is missing", but the minitool wizard sees the partitions just fine. I've tried several discs such as hiren's cd just to try to get to a GUI (mini windows) but always get a bluescreen (trying to load the GUI).

I tried the System recovery from the Novo Button Menu, but all I get is "Default boot device missing or boot failed" it then demands installation media which I already know won't help with recovery.
Would it be right to assume (since at least some tools can see the partitions)
that it is simply a problem with how the partition table is being identified? If that's the case, is there any software tool that can correct it?
I'd rather fix the problem than reload the whole thing (but it looks like I'll end up doing just that), any further ideas?