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Old 10-07-2009, 05:08 PM   #1
sysbox
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mount: special device /dev/sdb1 does not exist


I'm trying to mount an external usb drive. The dmesg output is as follows

Code:
usb 1-5: new high speed USB device using ehci_hcd and address 25
usb 1-5: configuration #1 chosen from 1 choice
scsi28 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 25
usb-storage: waiting for device to settle before scanning
  Vendor: Seagate   Model: FreeAgent         Rev: 0132
  Type:   Direct-Access                      ANSI SCSI revision: 04
SCSI device sdb: 2930277168 512-byte hdwr sectors (1500302 MB)
sdb: Write Protect is off
sdb: Mode Sense: 2d 08 00 00
sdb: assuming drive cache: write through
SCSI device sdb: 2930277168 512-byte hdwr sectors (1500302 MB)
sdb: Write Protect is off
sdb: Mode Sense: 2d 08 00 00
sdb: assuming drive cache: write through
 sdb: sdb1
sd 28:0:0:0: Attached scsi disk sdb
sd 28:0:0:0: Attached scsi generic sg2 type 0
usb-storage: device scan complete
However, I can't mount it:
Code:
# mount /dev/sdb1 /mnt/usb
mount: special device /dev/sdb1 does not exist
Nor can I run fdisk:
Code:
# fdisk /dev/sdb

Unable to open /dev/sdb
There is no /dev/sdb or /dev/sdb1. This occurs for any USB drive I try, and they all mount fine on other Linux machines. What should I do?
 
Old 10-07-2009, 05:12 PM   #2
sycamorex
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If it's the case with any usb drive you've tried, I would assume your usb port might be faulty. Have you tried connecting a usb mouse/keyboard via this port?
edit: what's the output of: fdisk -l ?
 
Old 10-07-2009, 05:13 PM   #3
repo
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Try
Code:
cd /dev/
./MAKEDEV sdb
 
Old 10-07-2009, 05:22 PM   #4
sysbox
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Thanks to repo. 'MAKEDEV sdb'. I'm not sure why they weren't there by default, but now I know how to make them. Thanks again.
 
Old 11-11-2013, 02:51 AM   #5
girish19
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Grub is not loading.

hi repo

my error is special device /dev/sdc1 does not exist

i have mistekaly type

cd /dev/
./MAKEDEV sdb


now i am facing issue. Grub is not loading. what should i do?
 
  


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