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Einen bootable USB Stick benötigt man z.b. zur Installation von Betriebssystemen wie Linux. Aber auch Windows 10 oder 11 ist möglich.
Mit dem Mac Terminal hat man alle benötigten Tools.

== Beispiel Ubuntu ISO auf bootable USB Stick: ==
Quelle (Zugriff 2022-09-07)
https://www.cyberciti.biz/faq/creating-a-bootable-ubuntu-usb-stick-on-a-debian-linux/

=== Step 1 – Download Ubuntu .iso image ===

Visit the Ubuntu.com and grab the desktop or server CD/DVD iso image.
=== Step 2 – Find your usb device name on Linux ===

Insert your USB stick and type the following df command to see if it is mounted automatically on a Debian or any other Linux desktop system:

df

Sample outputs (see /media/vivek/data that is my USB):
<pre>
Filesystem 1K-blocks Used Available Use% Mounted on
udev 16432268 0 16432268 0% /dev
tmpfs 3288884 26244 3262640 1% /run
/dev/mapper/md0_crypt 491076512 9641092 456420380 3% /
tmpfs 16444408 105472 16338936 1% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 16444408 0 16444408 0% /sys/fs/cgroup
/dev/sdc1 122546800 124876 116153868 1% /boot
tmpfs 3288880 24 3288856 1% /run/user/119
tmpfs 3288880 72 3288808 1% /run/user/1000
/dev/sdd1 1467360 1467360 0 100% /media/vivek/data
</pre>
You can try the ''lsblk'' command or dmesg command as well to list your usb devices:
lsblk
dmesg

You need to '''unmount''' /media/vivek/data:
sudo umount /media/vivek/data

Or try:
sudo umount /dev/sdd1

'''Another option''' is to run ''dmesg'' command to '''find out usb device name:'''

sudo dmesg

Sample outputs:
<pre>
[461339.310378] usb 2-1.7: new high-speed USB device number 12 using ehci-pci
[461339.420453] usb 2-1.7: New USB device found, idVendor=0781, idProduct=558a
[461339.420457] usb 2-1.7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[461339.420460] usb 2-1.7: Product: Ultra
[461339.420461] usb 2-1.7: Manufacturer: SanDisk
[461339.420463] usb 2-1.7: SerialNumber: FooBarNixCraftSerialNumber
[461339.421010] usb-storage 2-1.7:1.0: USB Mass Storage device detected
[461339.421457] scsi host6: usb-storage 2-1.7:1.0
[461340.431909] scsi 6:0:0:0: Direct-Access SanDisk Ultra 1.00 PQ: 0 ANSI: 6
[461340.432886] sd 6:0:0:0: Attached scsi generic sg4 type 0
[461340.433448] sd 6:0:0:0: [sdd] 121307136 512-byte logical blocks: (62.1 GB/57.8 GiB)
[461340.435434] sd 6:0:0:0: [sdd] Write Protect is off
[461340.435438] sd 6:0:0:0: [sdd] Mode Sense: 43 00 00 00
[461340.436405] sd 6:0:0:0: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[461340.449612] sdd: sdd1 sdd2
</pre>
It is clear that /dev/sdd is my usb stick device name. '''You can also use the lsblk command.''' For example:

lsblk
=== Step 3 – Verify Ubuntu .iso CD/DVD image file ===
'''TIP:''' You can find DVD iso image checksum such as 443511f6bf12402c12503733059269a2e10dec602916c0a75263e5d990f6bb93 on Ubuntu.com download page itself.

However, I like to verify my download. For example:
ls -l ubuntu-20.04.1-live-server-amd64.iso

echo "443511f6bf12402c12503733059269a2e10dec602916c0a75263e5d990f6bb93 *ubuntu-20.04.1-live-server-amd64.iso" \
| shasum -a 256 --check

You should get the following output:
ubuntu-20.04.1-live-server-amd64.iso: OK

Once verified you can write it to the USB device.
===
Step 4 – Create a bootable USB stick on Linux ===

'''Warning: Be careful with the USB stick/pen/disk names. Wrong names always result in data loss. Make sure you type the correct name.'''

Type the following dd command to create a bootable USB image from a .ISO file:
sudo dd if=artful-desktop-amd64.iso of=/dev/sdd bs=1M status=progress

Another example:

sudo dd if=ubuntu-20.04.1-live-server-amd64.iso of=/dev/sda bs=1M status=progress

The dd command will write process data to a usb stick (/dev/sdd or /dev/sda)and a progress bar appears on screen.
Ubuntu to create a bootable Ubuntu USB flash drive from terminal

In this example I am going to create a bootable flash drive for ubuntu-18.04.3-live-server-amd64.iso file as follows:

sudo dd if=/isos/ubuntu-18.04.3-live-server-amd64.iso of=/dev/sdb bs=1M status=progress

Ubuntu iso bootable USB create using dd command on Linux

'''Another example'''

sudo dd if=/isos/ubuntu-19.04-live-server-amd64.iso of=/dev/sdb bs=1M status=progress

Here is what I see:

748+0 records in
748+0 records out
784334848 bytes (784 MB, 748 MiB) copied, 119.174 s, 6.6 MB/s

'''Understanding the dd command options'''

dd : Start the dd command to write DVD/CD iso image.
if=/iso/ubuntu.iso : Path to input file.
of=/dev/sdd : Path to destination USB disk/stick.
bs=1M : read and write up to BYTES bytes at a time. In this example, 1M at a time.
status=progress : Display progress bar while writing image to the USB stick such as /dev/sdd. See “Linux dd Command Show Progress Copy Bar With Status” for more info.

=== Step 5: Install Ubuntu using newly created USB drive ===

That’s all, folks! You now have Ubuntu on a USB stick, bootable and ready to install on your Laptop, Desktop or server based system.
Conclusion

You learned how to create a bootable usb pen drive from downloaded Ubuntu desktop or server .ISO image. See Ubuntu download page.

@@ Zeile 77: / Zeile 77: @@
 Once verified you can write it to the USB device.
-===
+=== Step 4 – Create a bootable USB stick on Linux ===
 '''Warning: Be careful with the USB stick/pen/disk names. Wrong names always result in data loss. Make sure you type the correct name.'''

Mac - Bootable USB Stick erzeugen - Versionsgeschichte

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134.3.84.225: Die Seite wurde neu angelegt: „Einen bootable USB Stick benötigt man z.b. zur Installation von Betriebssystemen wie Linux. Aber auch Windows 10 oder 11 ist möglich. Mit dem Mac Terminal ha…“