Ok - that sounds good. I was of course aware that the (obscure?) parameters where not needed I just wanted to show you exactly what I did for reproducability. I did in fact I eject the drive when trying "cp". Thank you for explaining that there is a difference between "unmount" and "eject". I may (but not sure) have forgotten to eject when i used "dd". I though I did eject it, but in case I didn't: does the process work if one forgets to unmount? Because if it doesn't - then logically I must have ejected it, in which case there is a difference between "dd" and "cp"? In any case, I would recommend adding to the web page "DebianInstaller CreateUSBMedia" a warning or just additional text saying that one should NOT eject only unmount - as some people (like me 30 minutes ago) do not know the difference. /Thomas On 10/17/25 13:17, Pascal Hambourg wrote:
On 17/10/2025 at 12:00, Thomas Kragh wrote:sudo cp debian.iso "$TARGET_DEVICE" cp: cannot create regular file '/dev/sdb': No medium foundAs others pointed out, cp works as well as dd and is simpler, no need for obscure parameters. "No medium" found may indicate that /dev/sdb is an empty drive or card reader, a defective drive or an "ejected" media. The target device must be unmounted but not ejected, as this disable it and makes it unusable for read/write operation. Unfortunately, some file managers do not have a separate "unmount" option, only "eject" which performs both unmount and eject. VARNING: Klicka inte på länkar och öppna inte bilagor om du inte känner igen avsändaren och vet att innehållet är säkert. CAUTION: Do not click on links or open attachments unless you recognise the sender and know the content is safe.
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