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I have two laptops. The previous one (HP G42, 2011) had Windows 8 + Ubuntu 16.04. A fewer driver. Probably two of them
The new one (HP Probook 450 G4) has 240 GB SSD + 1TB of HDD replacing my CD Drive. Which runs Ubuntu 18.04.
While I was copying my previous files to the new laptop via rsync. my new laptop charge went down to zero. then when I rebooted my laptop, I find that it's not mounting anymore.

sudo e2fsck -f /dev/sdb1: command says 

e2fsck 1.44.1 (24-Mar-2018) 
ext2fs_open2: Bad magic number in super-block 
e2fsck: Superblock invalid, trying backup blocks... 
e2fsck: Bad magic number in super-block while trying to open /dev/sdb1 

The superblock could not be read or does not describe a valid ext2/ext3/ext4 
filesystem. If the device is valid and it really contains an ext2/ext3/ext4 
filesystem (and not swap or ufs or something else), then the superblock 
is corrupt, and you might try running e2fsck with an alternate superblock: 
e2fsck -b 8193 <device> 
or 
e2fsck -b 32768 <device> 

/dev/sdb1 contains a ntfs file system labelled 'Files'

sudo e2fsck -f /dev/sdb says 

e2fsck 1.44.1 (24-Mar-2018) 
ext2fs_open2: Bad magic number in super-block 
e2fsck: Superblock invalid, trying backup blocks... 
e2fsck: Bad magic number in super-block while trying to open /dev/sdb 

The superblock could not be read or does not describe a valid ext2/ext3/ext4 
filesystem. If the device is valid and it really contains an ext2/ext3/ext4 
filesystem (and not swap or ufs or something else), then the superblock 
is corrupt, and you might try running e2fsck with an alternate superblock: 
e2fsck -b 8193 <device> 
or 
e2fsck -b 32768 <device> 

Found a dos partition table in /dev/sdb

Can anyone please help me out? Not an expert on Ubuntu/Linux. Is there any way to recover it w/o formatting the whole drive? Had some backup of my other files in my new Laptop.
Edit: I was not copying OS related files. I was copying my own documents.

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  • images: (Disks: imgur.com/qlfFGF0) (e2fsck/sdb: imgur.com/BpAsQLo) (e2fsck/sdb2: imgur.com/siUD5IJ)
    – ssi-anik
    Mar 1, 2019 at 20:24
  • 2
    Since the filesystem is ntfs, you could try to run a check on Windows. Also, I'd be careful with the -f flag. Forcing an fsck check on an unknown filesystem might cause data corruption.
    – mikewhatever
    Mar 1, 2019 at 20:26
  • @mikewhatever, I don't want to install windows on my current laptop. Unless I have an option, I have to do that. Is there any other way available to do so?
    – ssi-anik
    Mar 1, 2019 at 20:31
  • You don't have to install Windows, just use another PC with Windows. Simple!
    – mikewhatever
    Mar 1, 2019 at 20:33
  • 1
    Well, there something called ntfsfix in Ubuntu, but it is not a "Linux version of chkdsk". Read man ntfsfix, and then, if you don't mind risking data loss, use it. Good luck.
    – mikewhatever
    Mar 1, 2019 at 20:41

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