How to reset Linux root password via Live CD

If it is not possible to use the GRUB bootloader as I described in this article – How to reset the root password in Linux via GRUB, you will have to run a Live CD, for example Ubuntu Desktop, at startup select “Try Ubuntu …” instead of installing, and then it will start.
How to make bootable flash drives I described here – How to create a bootable flash drive

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Resolving the error when starting the MC “Unable to create directory” /home/user/.local/share/mc “”

I noticed once the following error when starting MC (Midnight Commander):

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RAID Creation During Ubuntu Installation

On the test, when installing Ubuntu Server 14.04 LTS, we will create software RAID1.
I note that when creating RAID will be used mdadm automatically.
I will connect two identical disks to the server (similarly, you can try to create RAID on a virtual machine, for example, created in VirtualBox).

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IPhone 5s Repair – Blue Screen

Once I changed the battery in the iPhone 5s and at the same time decided to remove dust on the camera, for this I had to unscrew the protective plate, disconnect the display and camera cables.
And not with care, I mixed up the four bolts that held the plate, but they are of different sizes!
Below the photo, the first bolt does not magnetize, the rest are magnetized.

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