accidentaly wiped partition using fdisk

How to use TestDisk to recover lost partition
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shortman
Posts: 1
Joined: 20 Sep 2019, 09:40

accidentaly wiped partition using fdisk

#1 Post by shortman » 20 Sep 2019, 10:53

Hey,

So i stupidly used fdisk on the wrong hard drive. I deleted the existing NTFS partition, then recreated the gpt partition table (with g) and wrote the changes. I went back into fdisk and created a new partition using the default settings, though this time it was not ntfs, it was the linux default. After rebooting I realised my screw up and went back in and deleted the ext partition and recreated a single NTFS partition with the default settings.

How badly have I screwed up? Is there any hope? Ideally I would be able to get everything back, but specifically I have some photos that I need. Apart from this fdisk stuff I haven't copied or written anything to the drive. I created a disk image of the drive also.

photorec initially found some images, but I had to stop the search (can't remember why, it was a few days ago). After trying it again it hasn't been able to find anything. I can't remember what (if anything) I changed between then and now.

testdisk is running a scan and so far this is what it is giving:

Code: Select all

Disk /dev/sde - 4000 GB / 3726 GiB - CHS 486401 255 63
Analyse cylinder 331398/486400: 68%

Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
  MS Data               5166068747 5166074920       6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
  MS Data               5166074920 5166081093       6174 [Boot]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
  MS Data               5167230668 5167233547       2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
  MS Data               5167233548 5167236427       2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
  MS Data               5182286948 5182289827       2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
  MS Data               5182289828 5182292707       2880 [EFISECTOR]
check_FAT: Unusual number of reserved sectors 4 (FAT), should be 1.
Warning: number of heads/cylinder mismatches 64 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 63 (HD)
  MS Data               5182455844 5182586915     131072 [ARCHISO_EFI]
check_FAT: Unusual number of reserved sectors 4 (FAT), should be 1.
Warning: number of heads/cylinder mismatches 64 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 63 (HD)
  MS Data               5183526948 5183658019     131072 [ARCHISO_EFI]
check_FAT: Unusual media descriptor (0xf8!=0xf0)
Warning: number of heads/cylinder mismatches 64 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 63 (HD)
  MS Data               5184691760 5184692591        832 [NO NAME]
Bad root_cluster
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
  MS Data               5184704403 5184707282       2880 [NO NAME]
check_FAT: Unusual media descriptor (0xf8!=0xf0)
Warning: number of heads/cylinder mismatches 64 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 63 (HD)
  MS Data               5190104084 5190109011       4928 [NO NAME]
  
I'm not sure what any of this means. What should I do once testdisk finishes?

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cgrenier
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Re: accidentaly wiped partition using fdisk

#2 Post by cgrenier » 22 Sep 2019, 09:55

Run PhotoRec, enable the Expert mode in Options, start the recovery, choose a blocksize of 512 bytes, use the default options otherwise.

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