should actually work as simple as:

lsblk -fs; # identify your usb stick
NAME FSTYPE LABEL UUID MOUNTPOINT
sdd1 ntfs CCSA_X64FRE_DE-DE_DV5 4A4CD1594CD13FFD /media/user/CCSA_X64FRE_DE-DE_DV5
└─sdd

unmount /dev/sdd*; # unmount all partitions of this stick

# "burn" the stick
# MAKE SURE TO TARGET THE WHOLE DEVICE (sdd) AND NOT THE PARTITION (sdd1)

dd bs=4M if=/software/ISOs/LINUX/CENTOS/CentOS-7-x86_64-Minimal-1708.iso of=/dev/sdd
sync

# centos developers wiki
dd if=CentOS-6.5-x86_64-bin-DVD1.iso of=/dev/sdb
sync

does not work knoppix iso: use knoppix’s onboard utility to create knoppix stick

i tried to directly dd the KNOPPIX_V7.2.0CD-2013-06-16-DE.iso to the stick, this creates a valid cd-rom filesystem.

/dev/sdb on /media/canoodle/KNOPPIX type iso9660 (ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500,uhelper=udisks2)

that also mounts fine… but it won’t boot.

i dunno why.

alternative method: unetbootin

apt-get install unetbootin; # install unetbootin

prepare a USB stick by formatting it FAT32

insert your USB stick

apt-get install dosfstools; # install dos fs tools

mount; # find where your usb stick is mounted
/dev/sdb on /media/canoodle/BE66-E5D8 type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=437,iocharset=utf8,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)

lsblk; # find where your usb stick is mounted
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0 55.9G  0 disk 
├─sda1   8:1    0    1G  0 part [SWAP]
├─sda2   8:2    0 38.9G  0 part /home
└─sda5   8:5    0   16G  0 part /
sdb      8:16   1  7.3G  0 disk /media/canoodle/BE66-E5D8
sr0     11:0    1 1024M  0 rom

# sdb is my usb stick, now lets

umount /dev/sdb; # unmount it

mkdosfs -F 32 -I /dev/sdb; # format it

now let’s

apt-get install unetbootin; # install unetbootin (this is a GUI tool)
unetbootin; # start unetbootin

you select iso, it should detect your usb stick automatically.

THIS ALL MAY WORK WITH OTHER ISOs BUT NOT WITH KNOPPIX

i had to use a laptop with DVD-ROM and burn the KNOPPIX_V7.2.0CD-2013-06-16-DE.iso to a CD-R (Brasero does this job nicely).

then i bootet the laptop from that Knoppix-CD-R.

Then i used the „Menu -> Knoppix -> „knoppix auf flash drive installieren“

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