plugging in USB and no disk there

[Colin Law]

On Fri, 22 Oct 2021 at 15:54, Jerry Geis <jerry.geis at gmail.com> wrote:
>
> I plug in a USB disk (4T) disk and dmesg shows me this:
>
> [ 9528.526871] sd 0:0:0:0: [sda] Sector size 0 reported, assuming 512.
> [ 9528.533942] sd 0:0:0:0: [sda] 34359738369 512-byte logical blocks: (17.6 TB/16.0 TiB)
> [ 9528.533956] sd 0:0:0:0: [sda] 0-byte physical blocks
> [ 9528.536171] sd 0:0:0:0: [sda] Write Protect is off
> [ 9528.536182] sd 0:0:0:0: [sda] Mode Sense: 37 00 00 08
> [ 9528.540860] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> [ 9528.544490] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes not a multiple of physical block size (0 bytes)
> [ 9534.556310] sd 0:0:0:0: [sda] Unsupported sector size 8422320.
> [ 9534.563335] sd 0:0:0:0: [sda] 0 512-byte logical blocks: (0 B/0 B)
> [ 9534.563352] sd 0:0:0:0: [sda] 8422320-byte physical blocks
> [ 9534.572373] sda: detected capacity change from 34359738369 to 0
> [ 9540.605521] sd 0:0:0:0: [sda] Unsupported sector size 8422320.
> [ 9540.621279] sd 0:0:0:0: [sda] Attached SCSI disk

Is it formatted?  If not, try running gparted and format it.

Does it work in any other system?

Colin