On 06/21/2015 10:51 AM, Carlos E. R. wrote:
On 2015-06-21 15:05, Anton Aylward wrote:
Many other cards don't, aren't recognized, even though the kernel sees the insertion and read the card data.
Erase the card with dd, partition and format it fresh (with the same FAT flavour). Apparently some cards have a partition table that make Linux tools fail.
I don't think you understand.
You notice this when the device node for the partition does not appear.
Yes, I can understand that when there is sdb rather than sdb: sdb1 That latter case, yes there is the partition /dev/sdb1 But if there isn't anthing like that when the card is inserted, just soeting like this: [532830.469042] usb 4-2: new full-speed USB device number 31 using uhci_hcd [532830.730045] usb 1-4: new high-speed USB device number 64 using ehci-pci [532830.845233] usb 1-4: New USB device found, idVendor=14cd, idProduct=125c [532830.845240] usb 1-4: New USB device strings: Mfr=1, Product=3, SerialNumber=2 [532830.845244] usb 1-4: Product: Mass Storage Device [532830.845247] usb 1-4: Manufacturer: Generic [532830.845250] usb 1-4: SerialNumber: 125C20100726 [532830.845654] usb-storage 1-4:1.0: USB Mass Storage device detected [532830.845822] scsi host39: usb-storage 1-4:1.0 [532832.838305] scsi 39:0:0:0: Direct-Access Mass Storage Device PQ: 0 ANSI: 0 CCS [532832.838640] sd 39:0:0:0: Attached scsi generic sg3 type 0 [532832.842643] sd 39:0:0:0: [sdb] Attached SCSI removable disk And that's all! And I get # dd if=/dev/urandom of=/dev/sdb dd: failed to open ‘/dev/sdb’: No medium found # fdisk /dev/sdb fdisk: cannot open /dev/sdb: No medium found Following that I puled the card [533161.786511] usb 1-4: USB disconnect, device number 64 Some cards simply re not recognized. idVendor=14cd, idProduct=125c I'm not alone asking this for that type of card: http://unix.stackexchange.com/questions/134497/why-isnt-sda1-showing-up-in-d... As you can see, he ended up making a device node manually. On my system that would be minor 16 and 17 Surely there should be a udev rule that does that! See also https://forums.opensuse.org/showthread.php/487975-MicroSD-question which is similar, but I don't have the over-voltage and I don't have anything on the 'fdisk'. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org