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<tt>The partition table is still in memory</tt><tt> so you will have
some luck till you reboot or force the system to do a partprobe.</tt><tt><br>
<br>
</tt><tt>The following link points to how to recover your partition
from the in system data:</tt><tt><br>
</tt><tt><a class="moz-txt-link-freetext" href="http://unix.stackexchange.com/questions/43922/how-to-read-the-in-memory-kernel-partition-table-of-dev-sda">http://unix.stackexchange.com/questions/43922/how-to-read-the-in-memory-kernel-partition-table-of-dev-sda</a></tt><tt><br>
</tt><tt><br>
</tt><tt>That being said first you should back up all the data you
can to an external drive</tt><tt><br>
</tt><tt>If your going to play with testdisk then it is best to
learn on an image of the broken drive so copy the whole drive off
to some other system to play with.</tt><tt><br>
</tt><tt><br>
</tt><tt>I have trashed enough systems in my time to know that a
good backup is the best way to insure that things go well.</tt><tt><br>
</tt><br>
<br>
<br>
<div class="moz-cite-prefix">On 10/25/2016 07:33 AM, Matt Price via
talk wrote:<br>
</div>
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cite="mid:CAN_Dec9ZS7HHrs0omkCikk4icxUeSoV3sDg8kpGTd3Q=CKQ9Ww@mail.gmail.com"
type="cite">
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<div>OK, so I did this<br>
<br>
</div>
dd if=some.iso of=/dev/sdb<br>
<br>
</div>
oops -- that's not the USB key! that's my internal m.2 drive!
<br>
<br>
</div>
<div>The partition table is gone, but it used to contain 2
partitions, both of them in an LVM, one of them part of an
extended logical volume that added space to /home on my
overburdened main drive. I haven't lost much data (just the
first 700mb were overwritten), and amazingly my laptop
continues to run just fine -- even though lvscan reports a
missing drive, apparently the data is still findable. <br>
</div>
<div><br>
</div>
<div>I'd like to restore the partition table but I don't know
where the partition boundaries are, and in any case I don't
know how to write a partition table (!). What tools should I
use? Preferably without turning off my laptop, since I'm
afraid it won't boot back up again!<br>
</div>
</div>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Alvin Starr || voice: (905)513-7688
Netvel Inc. || Cell: (416)806-0133
<a class="moz-txt-link-abbreviated" href="mailto:alvin@netvel.net">alvin@netvel.net</a> ||
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