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Cake day: July 21st, 2023

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  • A user types at a terminal (a physical teletype). This terminal is connected through a pair of wires to a UART (Universal Asynchronous Receiver and Transmitter) on the computer.

    Once I had the opportunity to sit at such a machine.

    A real typewriter with real paper. And no display! Only paper.

    I type my “command line” and it appears on my paper. Ok, where else…

    The computer responds by letting it’s response appear - what do you think? - on my paper, too. Not by magic, but by my machine typing it.

    I am typing to my paper. Then the computer is typing to my paper. And so on.

    Hardly ever have I had such a creepy feeling while doing computer work 😵‍💫












  • recover data from unfunctioned remaining RAID disks due to RAID controller failure

    In this case, you need a new RAID controller of similar type.

    Can I even simply attach one of the RAID 1 disk to the desktop system

    No. One disk out of a RAID array is different from a normal disk.

    Recovery becomes easy if you do not use a hardware RAID controller, but a ZFS software RAID instead. It does nearly all automatically. But you need to do a little more reading tutorials for the first setup.