Ubuntu: Convert bootable USB to ISO file



Question:

My laptop comes with a program called "Acer Recovery Management", which allows you to make a bootable recovery USB stick, from which you can boot to recover the computer to its original state.

Now, of course (I don't know why Acer didn't think about this) I don't want to give up a perfectly usable USB stick â€" which BTW needs to be at least 16 GB â€" to be a 'recovery disk' that I will probably never use anyway. But I still want to make it, just in case.

So, is there a way to convert the data on this bootable USB to an ISO file (or format), so that I can keep it on an external hard drive somewhere instead of a USB stick, and in case of problems convert the ISO back into a bootable USB with e.g. unetbootin?


Solution:1

To create an image from a drive

sudo dd if=/dev/sdx of=/path/to/new.iso  

Alternatively, to create a USB drive from an image

sudo dd if=/path/to/iso of=/dev/sdx  

Replace /dev/sdx with your USB drive, e.g. /dev/sdc.

WARNING: It is imperative that you make certain you are using the correct drive. If you don't use the correct drive, you could lose your data. To check your currently mounted drives, use the command lsblk.

Note: Copying large files (1 GB or higher) can take a long time, be patient.


Solution:2

Another option is to use gnome-disks.

You can start if from a terminal with gnome-disks or look for the application Disks in the Dash.

Once the USB stick is mounted, select it and use the more actions icon to choose Create Image.

Disks is a GUI for the same command.


Solution:3

"USB Image Tool" is a freeware for Windows which can create images of your BOOTABLE USB flash drives and also allows you to restore them later. This free tool can be used to create backup images of almost all types of BOOTABLE USB devices such as flash drives, card readers, digicams, cell phones and mobile music players.

Its a portable tool so you don't need to install it. Just download and run the program. Using the program is very easy. You can create the backup or restore the backup in a few clicks.

It can be used in Windows XP, Vista, Windows 7 and Windows 8. Both 32-bit and 64-bit editions are supported.

You can download it using following link: http://www.alexpage.de/usb-image-tool/download/


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