[dm-crypt] Question about mounting an external hard drive

[dm-crypt] Question about mounting an external hard drive

[Dr. David Bower]

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Hello:

I was directed to you by Clemons Fruhwirth.

I recently purchased a 2 TB Samsung external hard drive and used Ubuntu Linux to password protect it.  It seems that Ubuntu used LUKS encryption to protect the hard drive.

Now I am having extreme difficulty using the external hard drive.  It seems that my main problem is that I cannot find the exact commands to mount the external hard drive
so that Ubuntu Linux will recognize the drive.  I have tried using the approaches listed on multiple web pages but as yet I am still unsuccessful in using the drive.

Any help / direction you can give me to solve this problem would be much appreciated.

Thanks,

PS:  When I insert the hard drive into the USB port, Ubuntu will ask me for the password and I am able to unlock the drive.  In fact, I can unlock the drive either from the linux command line or from the dialog box available from the Ubuntu linux disk application.

[cid:a99e9404-e458-459f-a934-e6b36bc76dfb]

David M. Bower, MD, PhD
Radiation oncologist / Medical physicist

cellphone:  (954) 940 0462
email:  dr.david.bower@hmshdr.com

Horizon Medical Services
3920 NW 49 Street
Tamarac, FL   33309




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Re: [dm-crypt] Question about mounting an external hard drive

[Jorge Fábregas]

On 12/24/20 9:39 AM, Dr. David Bower wrote:
> I cannot find the exact commands to mount the external hard drive

Hi,

I have no experience with Ubuntu but if you get the prompt to enter the
password - when you plug in the disk - I assume it gets mounted
automatically (when passphrase is correct).

You can open a terminal window and verify it it's already mounted with:

df -h
or
sudo lsblk --fs

Anyway, if you say you can unlock the device, for example with:

sudo cryptsetup luksOpen /dev/sdc1 whatever

...then you can mount it with:

sudo mount /dev/mapper/whatever /mnt

Just pay attention to the name you're using for the "unlocked" device
("whatever" in my example).

-- 
Jorge
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