[TriLUG] Is all hope lost (Ubuntu 18.04)

[Brian via TriLUG]

All *may* not be lost; any files that were on sda before are still 
there, but good luck finding them again without a correct partition table.

"sda1" *is* a partition; the block device would be "sda".

If you changed the partition table on sda, the previous partition table 
is gone.  If you happen to know where the previous partitions start and 
end on the disk, you can rebuild the partition table to what it was before.

The data in the files is probably safe, if you didn't attempt to write 
to the newly-defined partitions.

ddrescue can do a lot; it may be able to recover files in the absence of 
a valid or correct partition table.  Or other tools could accomplish 
something similar perhaps.

If it's really important data, you could spend $$$ on a recovery 
service.  Since the drive is fully functional, it's just a matter of 
software and time.

What was this exercise?

-B


On 11/28/20 10:14 PM, Matthew Glassman via TriLUG wrote:
> Was following an exercise and trying to creat partitions on sda1.  Rebooted and wound up in grub rescue with unknown file system message.  Did an LS and got two results. Both state unknown file system.  Will a live disk get my system (and more importantly files) back.  Grub repair maybe?
> 
> Thanks
> Matthew
>