If you make a OS Upgrade on a older PC the Bios cant boot the new OS cause Ubuntu changed the Compression Type of initramfs tools to “zstd” which older Bios cant boot. Howto fix: On UPGRADED NOT REBOOTET OS edit “/etc//initramfs-tools/initramfs.conf” CHANGE COMPRESSION = gzip !! then “sudo update-initramfs -u -k all” and “sudo […]
Category: luks
Linux: Perfect Secure Travel Laptop
If you want to Travel to other Countries (Border-Control), you should know some things: Buy a older Acer Laptop with Micro SSD Harddisk and SATA CDROM Slot Buy a SATA CDROM Adaptor for 10$, open the Laptop and remove the SATA Drive put it into the SATA Adaptor Don’t put Screws into the Laptop to […]
Linux Security: create, mount, lock Luks Encrypted Container Files
Howto create encrypted Container Files for private Photos? REMARKS: EVERY unlocked and active mounted Luks Drive could be read out by attackers! Use long Passwords for Luks! dismount and LOCK unused luks drives/containers if NOT used! Create and mount Script: #!/bin/bash # Script creates 4GB Encrypted File Container, set Password # and mount it to […]
Amazon AWS Howtos
Here some Bookmarks if you want to try Amazon AWS Cloud Services like S3 (Cloud File Storage), EC2 (VM Instances..) Howtos / Basics : https://github.com/open-guides/og-aws#aws-data-transfer-costs Remark: AWS Services mostly priced by data transfers and online time! Checkout daily “Billing Monitor” ! Amazon AWS: https://aws.amazon.com/ Remark: S3 is the Standard Cloud Storage, cheaper is S3-IA or […]
Ubuntu Vivid: Things you should change after fresh setup
If you Setup Ubuntu 15.XX on a PC there are a few things to change: open a Gnome Terminal an run (# Comments): $sudo apt-get update && apt-get dist-upgrade #Pull Updates $sudo adduser CrazY12U$ERNAME # Create a crazy Username (Standarduser, no sudo, no lpadmin) for daily work! to prevent social engineering Hacks $sudo chmod 700 […]
Ubuntu: Recover Data from old Luks Encrypted HDD to new HDD
If you prefer to use encrypted Devices you ran into a problem if you try to move, migrate or recover the files from the old luks protected home. As normal User you should know that luks is used with LVM2 Logicial Volume Manager, which manages the partitions “named based”. Major Info! Ubuntu prename the volume […]
Ubuntu Vivid: Systemd boot OS into rescue mode with tmpfs
If you setup a Laptop with 15.XX and a luks encrypted SSD, you did set on older OS “tmpfs” for /tmp. Now under “systemd” the the boot hangs cause systemd “automount” tmpfs to /tmp by default!!! If you enter tmpfs into fstab like on ubuntu 14.10, the OS boots into the “RECOVERY RESCUE MODE” Here […]
Ubuntu Debian: Setup on older Hardware NO UEFI Workaround Black Screen No Boot
Todays current Hardware Bios uses a new Software Interface to boot. Thats called “UEFI” Newer Linux Versions Support this Hardware Setup by default! BUT these settings makes users (Newbies/Office Users) mostly impossible to setup the System on older Hardware, cause the “Setup Routines” does not detect the older Bios! Here the User must interact manual […]
Debian Ubuntu Laptop mods for SSD HDD and a full encrypted with luks
Major INFO 06-2015: Do not set tmpfs on ubuntu 15.XX or Systems with systemd!!! This block PC boot !! If you want to setup a Ubuntu/Debian Laptop with a full encrypted HDD use a “alternate” CD/DVD. After Setup you have to change some little Parameters to extend the lifecycle of the SSD Chips disable Swap […]
Change System Crypt Password Debian Ubuntu LVM Full Encrypted System
Solution: The new NEW Password must be set before you delete the old! – open Console! – Login as root! with #sudo -s – enter #cryptsetup -y luksAddKey /AddKey /dev/sdaX – System prompt for old Password, enter it now! – then enter new password min 8 Characters – System should show “Command Successful” – if […]
LVM + Raid 1 Problem Crash System Data lost
Warning: If you setup a Server with LVM and Software Raid 1 – 5 and a Crash happens the LVM blocks the saving of the EXT-3 File Journal to the HDD. Solution: Do not use LVM with Software RAID !!! to keep DATA save. Same with Luks Encryption and LVM!!!