Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [usb]

Universal Serial Bus, an industry standard for serial communication.

The Universal Serial Bus is an industry standard for serial communication, defining:

  • connectors
  • protocols
  • cables

Originally developed to have a standard for connecting devices to computers.

More info on usb.org and wikipedia.

402 questions
6
votes
4 answers

How do you specify static mount points for removable usb drives?

I have a bunch of usb ports and hubs. When you attach usb thumb drives, Linux assigns them to virtual block devices on a first-come first-serve basis. It creates sdd, sde, sdf, and so on, regardless of which port I plug the drives into. We copy…
Nick
  • 81
  • 1
  • 2
6
votes
5 answers

How to Login to Windows XP/7 Using a USB stick for authentication

Is there a way to log into Windows using a USB stick? (on Windows XP/7) I have student workers whom I would like to give admin rights for maintenance, but I would like to refrain from giving out a password for various reasons (students joining and…
Force Flow
  • 1,165
  • 5
  • 23
  • 45
6
votes
5 answers

What is a a good serial-to-USB adapter?

Serial ports on devices are still used for many things, especially on network devices. However, most modern laptops no longer have serial (aka "COM") ports. So what I'm curious about is: what is a good adapter, or chipset used in adapters, that…
DM
5
votes
2 answers

How can I fix my UPS repeatedly disconnecting and reconnecting?

I'm running a nut server connected to a Tripp Lite SMART1500LCD by USB. The device is behaving unexpectedly and I can see these kernel messages: user@host:~ $ dmesg -T [Wed Dec 4 13:24:24 2019] usb 1-1.5: USB disconnect, device number 91 [Wed Dec …
Layne
  • 91
  • 1
  • 6
5
votes
2 answers

Looking for way to expose and extend 100s of USB connections from VM cluster(s)

We currently test a very large number of devices and we have one PC per 10 devices or so (we use two USB hubs per PC to break out to the devices). We have huge number of PCs and it's turning into a management nightmare. I've been thinking about…
Mike
  • 379
  • 2
  • 3
  • 14
5
votes
1 answer

mount says already mounted; umount says not mounted

My Linux server (Centos 7.5) is in a strange state with USB drives. When I try to mount a partition on a USB drive to a newly created mount point I get the error mount: /dev/sdd1 is already mounted or /mnt/foo busy. /mnt/foo is a newly created…
Robert Newton
  • 181
  • 1
  • 5
5
votes
5 answers

IBM x3650 will not boot from USB

Hello serverfault community, and thank you in advance for your time. Summary: I have an IBM x3650, which I bought secondhand (eBay). I am trying to install and run VMWare ESXi 5.5 on it via a USB flash drive, but it will not boot from a USB flash…
YouAreTheHat
  • 246
  • 1
  • 3
  • 8
5
votes
3 answers

Rebuild Fedora 19 ISO adding Kickstart for USB install

I am attempting to edit a Fedora 19 DVD ISO to add a kickstart file. I then need this ISO burnt to a USB stick for instillation. The error I get when booting is Warning: Could not boot. Warning: /dev/root does not exist To try and determine which…
dooffas
  • 315
  • 2
  • 5
  • 11
5
votes
1 answer

Does a RAID 1 really protect from HDD failure?

If using a RAID 1 and if there are any inconsistencies between both disks found, data is copied from the primary disk (most likely the one with the lower port number) to the secondary disk. 1) But what if the primary disk is damaged and therefore…
stefan.at.kotlin
  • 905
  • 3
  • 13
  • 20
5
votes
2 answers

Managing consistent mounting of external USB hard drives in Linux (CentOS 5)

I have configured a server with CentOS 5.2 and am now working out a backup strategy. I plan on using Amanda as the backup application. Additionally, I am leaning towards using some USB hard drives for backup storage. I will be swapping out one of…
Loren Charnley
  • 293
  • 2
  • 9
5
votes
7 answers

USB drive changes name from /dev/sdb to /dev/sdc (and back again) when copying?

I have a usb drive mounted to a folder in an Ubuntu 9.04 server installation. The mount options are stored in /etc/fstab for easy mounting/dismounting: # /dev/sdb1 …
jobu1324
  • 485
  • 4
  • 9
  • 17
5
votes
4 answers

How do you make a WinXP bootable USB drive?

How do you make a WinXP bootable USB drive? I've seen a bunch of instruction here on ServerFault but they are specific to Vista or Linux, so again - I'm using WinXP. I've also tried unetbootin, but that doesn't work with Windows
Timhou
5
votes
7 answers

Why are usb hubs only available up to 7 ports?

Why are usb hubs only available up to 7 ports? Is there something technical that prevents that? I thought USB addressing allowed 127 USB devices to be connected, so that's not it. EDIT: Thanks for the links for hubs with more ports. There are a lot…
GoatRider
  • 201
  • 3
  • 8
5
votes
4 answers

Linux console - programmatical detection of which device a USB storage is assigned to

Every morning 9am we plug an external HD to our office server (always to the same USB port). Every day the HD is new, but all of them are made by the same manufacturer (Freecom). Everyday at 12am, a script runs backing up everything to the HD. The…
Daniele
4
votes
1 answer

Can't get USB/IP to work

I have Ubuntu 16.04, and USB cash device plugged on it. I want to share this cash device through USBIP. So I plugged this device and usbip list --local Then I see my device (emphasized with bold) busid 3-1 (09da:f613) unknown vendor : unknown…
Alex Rsk
  • 93
  • 1
  • 6
1 2
3
…
26 27