Hi, I'm in deep frustration. After `dd if=/dev/null of=/file.iso', I may not mount usb-stick. for copying a data (directories) into the stick. I did `fdisk', inspect: ---------------- root@debian:~# fdisk -l /dev/sdb
Disk /dev/sdb: 7.4 GiB, 7900845056 bytes, 15431338 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: B9CE4505-2CC9-4A28-AFE5-6D007A023AB2 Device Start End Sectors Size Type /dev/sdb1 2048 4196351 4194304 2G Linux filesystem /dev/sdb2 4196352 8390655 4194304 2G Linux filesystem /dev/sdb3 8390656 12584959 4194304 2G Linux filesystem /dev/sdb4 12584960 15431304 2846345 1.4G Linux filesystem root@debian:~# ------------------- trying: ----------------- root@debian:~# mount -v /dev/sdb /mnt mount: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so. root@debian:~# ------------------ root@debian:~# dmesg | tail [ 185.804756] sdc: sdc1 sdc2 [ 185.808865] sd 3:0:0:0: [sdc] Attached SCSI removable disk [ 186.401256] ISO 9660 Extensions: Microsoft Joliet Level 3 [ 186.404465] ISO 9660 Extensions: Microsoft Joliet Level 3 [ 186.443255] ISO 9660 Extensions: RRIP_1991A [13607.893806] perf interrupt took too long (2501 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 [27577.987872] sdb: sdb1 sdb2 sdb3 sdb4 [27578.241862] sdb: sdb1 sdb2 sdb3 sdb4 [28133.919005] usb 4-1: USB disconnect, device number 4 [38340.049258] sdb: sdb1 sdb2 sdb3 sdb4 root@debian:~# ---------------- Prompt, what is need doing, for utilis the usb-stick. Thank. gdsi11 gds...@aol.com