Hello, let me say I didn’t made wrong choosing this part of Forum. I wanted to try install OpenSUSE linux using live usb stick. I used “SUSE Studio image writer” application to make live USB-stick, I did what had to be done, but now, my Dolphin can not register my USB, so I can not see what is written on it (if any).
Did I made some mistake? Is it possibly to get back usb-stick for “regular using” (to store and write data from it)?
Thank you for answering my questions
Did you unplug the stick after creating it?
Can you do so, then plug it back in and show
dmesg | tail -20
And yes, as long as the stick is OK ( what size is it btw ), you can reuse it. Use YaST’s partitioner, remove the partition table, create a new partition on it with the filesystem of your choice.
I did not tell: when I opened “Partitioner” I saw usb stick was shared in 2 partitions (I supposed it is because of this live file on it). So, before I did what you asked me to do, I formated USB-stick as FAT32 data disc, and again made bootable stick using “SUSE Studio image Writer”. Then I repluged-in but, again - there are no usb-stick in Dolphin notifications.
Finally this is what I get when typed in Terminal command you suggested:
dmesg | tail -20
318.812152] usb 5-7: new high-speed USB device number 6 using ehci-pci
318.969661] usb 5-7: New USB device found, idVendor=0951, idProduct=1666
318.969666] usb 5-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
318.969669] usb 5-7: Product: DataTraveler 3.0
318.969672] usb 5-7: Manufacturer: Kingston
318.969675] usb 5-7: SerialNumber: 4CEDFB74A35BE3A0299902C6
318.969978] usb-storage 5-7:1.0: USB Mass Storage device detected
318.975313] scsi host4: usb-storage 5-7:1.0
319.993194] scsi 4:0:0:0: Direct-Access Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6
319.994700] sd 4:0:0:0: Attached scsi generic sg2 type 0
319.995680] sd 4:0:0:0: [sdb] 30277632 512-byte logical blocks: (15.5 GB/14.4 GiB)
319.998181] sd 4:0:0:0: [sdb] Write Protect is off
319.998186] sd 4:0:0:0: [sdb] Mode Sense: 45 00 00 00
319.999305] sd 4:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
320.104468] sdb: sdb1 sdb2
320.108434] sd 4:0:0:0: [sdb] Attached SCSI removable disk
351.467825] perf: interrupt took too long (2514 > 2500), lowering kernel.perf_event_max_sample_rate to 79500
517.091753] perf: interrupt took too long (3143 > 3142), lowering kernel.perf_event_max_sample_rate to 63500
739.936170] perf: interrupt took too long (3935 > 3928), lowering kernel.perf_event_max_sample_rate to 50750
815.016744] BTRFS info (device sda2): qgroup scan completed (inconsistency flag cleared)
What now? 
Thank you for answering my questions
Hi
AFAIK, That’s the way the image works, you won’t see it until after it has run the first time. Boot it as a live running system and let it finish disk preparation, then after that it will mount.
My recent experience is that if I write the DVD installer iso or the NET installer iso to a USB, the Dolphin does not see it and KDE device notifier does not see it. But I can manually mount it.
If I write the live iso to a USB, then my experience is that Dolphin and device notifier do see that.
I’m not sure what it is that they are looking for. The USB will have two partitions – an EFI partition and the main partition. And I think that EFI partition coming first appears to be what confuses it.
Listen to me, my friends:
Don’t be angry if I ask silly questions, cos this is the first time I do with live usb’s.
Hi
No questions are silly 
So, I use imagewriter to prepare a Live USB device. Then on the system I wish to run this live system on, just press the relevant key at power on to get to the boot menu, eg on a HP system I press F9 and then select the USB device (not changing any BIOS settings), then it should show the Live system grub menu, press enter and enjoy…
Yes reorder boot so USB device is first. Or you can select what device to boot from the BIOS/UEFI boot menu. What key to press at boot depends on the BIOS F10 is common but i all depends on the hardware.
Many recent systems provide a BIOS boot menu. Both my Dell desktop and laptop use F12. I repeatedly hit the F12 key during boot, and I usually get the boot menu. Occasionally, I am too slow and I boot a system instead (so I reboot and try again).
I also have a Lenovo ThinkServer. And that also uses F12. The rule for that is to hit F12 while the logo is showing.
I leave the boot order set to what is normally useful. And I use F12 and the BIOS boot menu to boot a USB (or a DVD).
On an older computer (at work, before I retired) I just left it as USB first in boot order. And then I made sure that there was no USB drive plugged in for normal booting.
I reboot system, then options appeared are:
There is no option to start install from live usb. That is what I want - to install system from usb lkive, because, soon I would not have DVD drive in my computer. And also, if I didn’t entere BIOS I can not reorder boot order.
Sorry if I mess. that is why I want to make live usb.
Once you have booted into the live desktop, there should be an “Install” icon on the desktop. Click that to install.
I have not options boot into live desktop. What to do?
Thank you for answering my questions.
I am far from clear on what you put on that USB.
I have tried the live KDE iso and the live Rescue iso. And I saw install icons on both. I’m not sure about the live Gnome iso.
On the other hand, neither the DVD installer iso nor the NET installer iso provide a desktop. You either boot into the installer or into rescue mode (or a similar alternative). And rescue mode is command line.
Hi
Then it’s likely the ‘Show Boot Menu’ option is not set (enabled) in the BIOS, reboot and check the system BIOS that the boot menu is enabled, and which key to press eg esc, F2, F9, F12 etc.
I can not find what you write about. My motherboard is ASUS P5LD2-X. So, if somebody knows what I don’t know, be so kind to help.
Restart your Computer and press often the DEL key when booting to go to the Bios Menu.
This must be done before your Grub is starting…
https://www.manualslib.com/manual/473185/Asus-P5ld2-X-Gbl.html?page=91
Well, my friends, I solved problems. You were right in everything you said. And I did everything you said. I did just one thing more, found incidentally - in BIOS -> BOOT -> HARD DISC DRIVES also you have to change priority. Media that you installing from, must be hard disc 1. It is just when you have 2 hard discs (bootable usb also is treated as hard disc, as I saw). Once again, thank you for your patience, links and advices.
We are glad that you now have it working.