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Old

Bootable PC-DOS usb drive

Posted 10-06-2016 at 10:23 PM by number22
Updated 10-07-2016 at 10:38 PM by number22

We need a system to run old DOS program. Microsoft's Win98 lacks proper memory management for modem computer with larger amount memory. We have PC-DOS (from IBM) lay around.

Basic setup: Syslinux + floppy image with boot.bss

Need create a empty floppy image on usb drive.(your usb is already fdisk with FAT16 partition, and mkfs.msdos formatted).
Code:
#mount -t msdos /dev/usbpartition# /mnt/usb
#cd /mnt/usb
#dd bs=512 count=2880 if=/dev/zero of=fd0.img
...
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Old

keyboard or mouse mounted as ghost joystick

Posted 09-14-2016 at 01:15 PM by number22
Updated 09-15-2016 at 07:58 PM by number22 (spelling, format)

Mouse cursor jumps randomly and having a hard time in some steam games. This problem is fixed by udev rules. find this link by google: udev keyboard joystick

https://github.com/denilsonsa/udev-joystick-blacklist

Modified its rules so the ghost joystick is unbinded from usbhid driver.

Code:
#Microsoft Corp. Basic Optical Mouse v2.0 power
ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="0x045e", ATTR{idProduct}=="0x00cb",
...
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Old

ffmpeg alsa recording multiple applications audio

Posted 01-28-2016 at 11:56 PM by number22
Updated 02-07-2016 at 04:30 AM by number22

The trick is using dmix on loopback device:
2 dmixers; one for regualr onboard audio; the other for loopback virtual device, then duplicates streams send to onboard audio card, so you can hear what is being sent to loopback device.

Need to load snd_aloop module first;

Code:
modprobe snd-aloop index=2 id=Loopback pcm_substreams=1 enable=1
My first audio device is onboard soundcard; 2nd is HDMI card, so I put index=2 for Loopback device.

file...
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Old

Recover from hard drive MBR corruption with LVM/LUKS partitions

Posted 11-12-2015 at 09:05 AM by number22
Updated 11-12-2015 at 09:08 AM by number22

Using latest version boot cd or usb rescue disk, which is created by usbboot.img from cd or ftp.slackware.com

create usbboot.img with dd command.(#dd if=usbboot.img of=/dev/sdb bs=1M) (clear usb disk #dd if=/dev/zero of=/dev/sdb bs=512).

once boot up:

# cryptsetup luksOpen /dev/sdxx luksname (sdxx your encrypted luks partition)

After successful enter password:

#vgscan --mknodes
#vgchange -ay
#mount /dev/cryptvg/root /mnt...
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Old

custom colourful /etc/issue for Slackware

Posted 11-05-2014 at 12:52 AM by number22
Updated 12-27-2014 at 08:59 PM by number22

When you copy and paste these code into your /etc/issue with your vi or vim, you might need to replace ^[ with Control+V then Control+[ in input mode.

Code:
^[[0;32m   _____    ^[[0;34m _                  _
^[[0;32m  / ____|   ^[[0;34m| |                | |
^[[0;32m | (___     ^[[0;34m| |   __ _    ___  | | __ ^[[0;33m__      __   __ _   _ __    ^[[0;35m___
^[[0;32m  \\___ \\    ^[[0;34m| |  / _\` |  / __| | |/ / ^[[0;33m\\ \\ /\\ / /  / _` | | \'__|  ^[[0;35m/ _
...
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