Logical partition lost after Win10 reinstall

How to use TestDisk to recover lost partition
Forum rules
When asking for technical support:
- Search for posts on the same topic before posting a new question.
- Give clear, specific information in the title of your post.
- Include as many details as you can, MOST POSTS WILL GET ONLY ONE OR TWO ANSWERS.
- Post a follow up with a "Thank you" or "This worked!"
- When you learn something, use that knowledge to HELP ANOTHER USER LATER.
Before posting, please read https://www.cgsecurity.org/testdisk.pdf
Locked
Message
Author
Lynkz
Posts: 1
Joined: 03 Jul 2017, 15:07

Logical partition lost after Win10 reinstall

#1 Post by Lynkz »

Hi everyone. I have two OS installed on my computer, Windows and Arch Linux. I mostly work on Arch... Arch is installed into an extended partition with two logical in it, one for root and the other for home folders. Well, after a Windows 10 reinstall something happends to the Arch root partition... it dissapeared and now in its place fdisk shows a W95 Ext'd (LBA) partition which I think is referred to the extended partition container. I can see and mount the home partition without any problem.
In gparted I see it as unallocated space.

Image

Image


I started trying with Testdisk to recover it, this is the first that Testdisk shows on first screen, not diference with fdisk or gparted.

Image

When I do a quick search Testdisk finds the partition and I can browse its files and restore them. I already saved the most important files to another disk, but I want (if possible) to restore my partition as it was before Windows messed with everything. When I set it back to logical, diskpart shows me a "Bad structure" red message.

Image

I tried to continue with the recovery anyway but it shows the message "Invalid partition structure" and gets me back to the first screen.

Image

Please ¿anyone can help? ¿is it possible to get my partition back?

Thanks in advance.

User avatar
cgrenier
Site Admin
Posts: 5432
Joined: 18 Feb 2012, 15:08
Location: Le Perreux Sur Marne, France
Contact:

Re: Logical partition lost after Win10 reinstall

#2 Post by cgrenier »

There is no space between "arch" and "home" partitions, so they can not be both L(ogical) partitions.
Will your computer boot if you use an EFI GPT partition table ? It's a solution to handle all your partitions.

Locked