On Thu, Jan 22, 2026 at 04:45:18PM +0100, Bernard wrote:
On 19/01/2026 19:55, tomas@tuxteam.de wrote:
On Mon, Jan 19, 2026 at 07:01:25PM +0100, Bernard wrote:
[...]
You might want to do "sudo dmesg | tail" shortly after inserting the device
[...]
bd@debian-stretch:~$ sudo dmesg | tail
[550017.843525] sd 5:0:0:0: [sdd] 256 512-byte logical blocks: (131 kB/128
KiB)
[550017.843833] sd 5:0:0:0: [sdd] Write Protect is off
[550017.843838] sd 5:0:0:0: [sdd] Mode Sense: 00 00 00 00
[550017.844131] sd 5:0:0:0: [sdd] Asking for cache data failed
[550017.844138] sd 5:0:0:0: [sdd] Assuming drive cache: write through
[550017.844149] sdd: detected capacity change from 0 to 131072
[550017.862903] sdd: detected capacity change from 0 to 131072
[550017.871806] sdd:
[550017.890693] sdd: detected capacity change from 0 to 131072
[550017.890706] sd 5:0:0:0: [sdd] Attached SCSI removable disk
[...]
Ugh. This suggests that the device "appears" just as a block
device (I dimly remember some -- I think it was GPRS? -- modems
which did this, offering the windows (what else?) drivers on
the DOS file system. Once tickled with some undocumented magic,
they offered an USB serial, which behaved like a plain boring
modem, Hayes command set and all).
Sorry, at the moment I'm out of ideas. If you can, yell at the
vendor -- it feels useless, but is good for free software in
the long run.
Cheers