Category: Clients

  • WSL – mount error(13): Permission denied

    Issue Trying to mount a share located on a Windows 10 PC from Ubuntu WSL (Windows Subsystem for Linux)  running on Windows 11 machine: sudo mount -t cifs //192.168.1.25/Data /mnt/WinShare -o username=lin,password=Some$Psw@55 The operation fails with the following error: mount error(13): Permission deniedRefer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages…

  • Linux Ubuntu fails to boot – Problem loading UEFI:db X.509 certificate

    Issue Lenovo Ideapad laptop running Ubuntu fails to boot with the following error: [1.858988] Problem loading UEFI:db X.509 certificate (-65)BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3.3) built-in shell (ash)Enter ‘help’ for a list of built-in commands.(initramfs)

  • FreeDOS IntiDisk – Invalid Opcode

    Issue UBCD, Spinrite and other tools utilizing FreeDOS fail to boot on Dell OptiPlex 980 PC with the following error message:   IntiDiskInvalid Opcode at 03A0 0000 0F03 0D44 7C44 0B63 6218 8F15 6C6D 0D44 001E 0000 0000

  • Recover data from faulty Synology NAS

    Issue Synology DiskStation 415+ NAS failed. Blue power button LED keeps blinking. Status LED is off. All 4 disk orange LEDs steady on (there are only 2 HDDs installed). Removing all hard drives doesn’t change anything. Replacing RAM doesn’t change anything either. All this indicated motherboard failure. Owner asked to recover data from hard drives.

  • RetroPie – enable SSH root access

    To access RetroPie via SSH using root account: Open file sshd_config located in etc/ssh:sudo nano /etc/ssh/sshd_config  Find line:PermitRootLogin without-password Comment it out (or delete) it and replace with:PermitRootLogin yes Save changes (CTRL + X) Set root password:sudo passwd root Reboot your Raspberry Pi

  • Installing VMware Tools on Ubuntu Desktop – what is the location of the “ifconfig”

    Issue Installing VMware Tools (vmware-install.pl) on Ubuntu Desktop 17.04. Installation gets stuck with the following prompt: What is the location of the “ifconfig” program on your machine?

  • 7-ZIP – There are data after end of archive (Plesk tar backups)

    Tar archive files generated by Plesk web server backups generate following errors when trying to open them with 7-ZIP (v7.90): Error opening .tar archive – There are data after end of archive.

  • This kernel requires following features not present on the CPU: pae

    Issue Trying to run Linux based OS on Oracle VM VirtualBox. Following error is displayed:

  • List and run last used commands in Linux

    To list through most recently used commands one by one use Arrow-Up key To display all used commands:history To run a command from the history list:!391 where 391 command number

  • Ubuntu Grub – Change Default OS

    If you install Ubuntu as a second Operating System alongside Windows, every time computer boots you will be presented with a Grub boot menu where you can make a choose which OS to boot. If you don’t make any choice in 10 seconds your default OS will boot. Obviously after installing Ubuntu it will become…

  • Disable Ubuntu Unity Launcher Autohide

    Unity 3D on Ubuntu 11.04 (Natty Narwhal) and Ubuntu 11.10 (Oneiric Ocelot) Use this method to disable Unity Launcher autohide on Ubuntu 11.04. On Ubuntu 11.10 this will only work if you use Unity 3D. For Unity 2D check the second method below. Unity 2D was introduced in Ubuntu 11.10 to provide Unity interface for…

  • Ubuntu – Disable Music File Preview on Mouseover

    In Ubuntu by default if you click on a music file or just mouseover it will automatically start playing the file. Even if there is another file playing. To disable this behaviour:Nautilus (File Explorer) > Edit > Preferences > Preview > Preview Sound Files – Never Ubuntu 10.10