Hardware :: Usb Hard Drive / No On/off Switch On The Actual Device?
Aug 29, 2010
This isnt a linux related question as such, but I'd still like to ask.
I have purchased a 1tb external usb hard drive, which came with its own power supply, and the HD device is connected to the power mains 24/7.
However, there is no on/off switch on the actual device, and I dont want to have it permantly connected to my computer, perhaps only for an hour or so everyday.
Could I harm the usb HD by regularly pullling its usb cable from the computer usb port? (ofcourse I would unmount it first).
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Jan 2, 2010
I did a quick search but came up with nothing. I'll list things in point form to make it less confusing
-I'm running Ubuntu 9.10 with GRUB 1.97
-I have Windows 2000 installed on VirtualBox
-I have an NTFS partition with just music and my data on it, but no windows OS
-I want to take what I have on VirtualBox and put it on my NTFS partition
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Jan 16, 2010
Command to switch to a different hard drive. I have multiple hard drives in my computer. One called storage and the other one called filesystem. I would like to know how can i access the Storage hard drive via the terminal.
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Jun 13, 2010
I Have been "dual" booting two O/S's independently on two hard drives, and it has worked perfectly although a bit of a chore having to go into BIOS to select the other drive if I wanted to swap. I do it this way as it stops all the headaches with the MBR or GRUB, and doing updates and re-installs are completely clean and hassle free(what % can claim this in a regular multi-boot?) I have at last found a power switch to make the whole process even easier, its a simple 3 pole switch that slots into the front panel,searched the net for weeks as I knew they existed but only in the USA or Taiwan, managed to track one done in France,I thought I would share this information as I think it gives a simple solution to a what can be a very complex and frustrating problem![URL]...
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Jun 14, 2010
I'm a Linux college course student and can't et help from my "instructor". As part of my class, I've installed Fedora 12 on a secondary hard drive. I don't know the first thing about Linux and am totally lost trying to get back to my other hard drive to access the Windows XP OS. All my stuff for the courses I'm taking this summer are stored THERE. Can anyone help me with very simple, easy to follow instructions for how to get back to Windows AND also have access to Linus on the secondary drive?
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Mar 1, 2010
Is there any way to switch program titles in the Kickoff menu to the actual program name? i.e. "Web Browser" to "Mozilla Firefox" instead.
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Aug 11, 2010
I am setting up a Linux laptop for my parents, and want to also create some backup scripts to allow them to easily back up to an external hard drive. [And for them to be able to use it, it has to be super simple.]
For security purposes (should the external drive ever get lost or stolen), I want to encrypt the entire device using TrueCrypt. That means my scripts will have to use TrueCrypt to mount the backup volume using the device name. [Right?]
Now to the actual question(s): 1) Is there a way to ensure that an external hard drive will ALWAYS be assigned the same device name when plugged in? [That would be the simplest solution for me.]
2) Alternatively, is there a way (using bash scripting) to "find" the device name of a particular external hard drive, even if it might not be known in advance.
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Jun 23, 2011
Any basic description of how linux assigns drive letters? I understand that a drive letter assignment is not static. If I add a drive between /dev/sda and /dev/sdb, my /dev/sdb will become /dev/sdc and the new drive will become /dev/sdb. I have a hot swap tray and have come into some unexpected behavior. I removed /dev/sde from the hot swap tray and then loaded another drive into this same tray. When I mounted the new drive with options in fstab, it wouldn't mount because the new drive was /dev/sdf, not /dev/sde. Apparently, linux is looking at the id of the drive in addition to it's place in the BIOS chain.
My fstab entry is:
/dev/sde /backups auto noauto,rw,noexec,async,user 0 0
I was avoiding using UUIDs in the fstab so that new HDDs would not have to be "registered" in the fstab prior to use. Is there a way to tell linux (or fstab) whatever drive is plugged into SATA channel X mount to /mountpoint?
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Sep 10, 2010
I got a sort of usb connected device(not an external enclosure) so i can connect a sata hard drive into a machine that only has ide connections but the drive is not mounting. I am not very good at mounting slave hard drives anyway ,,,,never been able to get one happening without help. I am wanting to read this drive as i killed another desktop machine(i think the mb) and i need the data off the hard drive. The drive is shown in a directory and in the media directory. Can't think of what else sorry as i am so tired from testing everything out of the machine that i killed.....
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Jan 25, 2010
After connecting, dmesg shows:
Code:
After that, there are no /dev/sd* entries. the hard drive works as expected on my windows box. how can i mount this drive?
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Jul 22, 2010
I recently bought a new pc and installed Ubuntu on it. It came with a 500gb hard drive and during installation I manually partitioned it as follows:
10 gb (ntfs) for a windows partition
15 gb (ext4) mounted on /
4 gb for swap
the rest (470gb - ext4) mounted on /home
I've just installed a few apps from the repository, nothing big (about 500 mb in all), but in the 'file system' tab in 'system monitor' it says that for /home I have a total of only 432 gb, of which just 408 gb are available, with 500mb used. According to this, around 60gb of space have just vanished into thin air. Where did all this missing disk space go? The disk is brand new and there are no bad sectors in it.
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Mar 18, 2011
I have a Linux application(ProMAX 5000) running in a virtual Machine on my windows OS. I am using an external Hard drive of 250G in ext2 file system as my device for large data read, write & execute file system. I have already mounted the device from /etc/fstab. But i want my application to access this device as a Primary data storage device OR Secondary storage device. What command will i invoke to partition this 250G drive as my primary or secondary storage device.
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May 30, 2010
My only issue that I can't figure out thus far is the remote. I'm using a Hauppauge Nova-T USB Stick, and generally the setup for the Nova-T 500 is good. No problem with lircd.conf, .lircrc etc. My problem is that the remote doesn't work on startup. Looked in /etc/lirc/hardware.conf and it says, as expected: REMOTE_DEVICE="/dev/lirc0"
Which doesn't work because I have no /dev/lirc0 (I do have a /dev/lircd). However, running /proc/bus/input/devices, I discover that my IR receiver is event5, so if I change the /etc/lirc/hardware.conf to: REMOTE_DEVICE="/dev/input/event5"
And restart lirc, it works fine. Unfortunately, upon restarting the PC, the IR receiver doesn't always have the same path - eg it could be event6 or event8 etc - so then I need to fix the /etc/lirc/hardware.conf again.
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Feb 28, 2010
The external hard drive which contains all my photos and where I backed-up all my important documents is no longer recognized. It is a three month old 500GB Iomage Prestige Desktop Hard Drive.When I plug it in, it is recognised as a USB device, because it shows up when I type lsusb, but dmesg gives this error message.
[19712.013250] usb 2-2: new high speed USB device using ehci_hcd and address 21
[19712.145347] usb 2-2: configuration #1 chosen from 1 choice
[19712.147214] scsi25 : SCSI emulation for USB Mass Storage devices
[code]....
I popped the disk out of the casing put it on a SATA connect internally and then tried the file recovery programs testdisk/photorec and SpinRite, but both failed because they couldn't recognize the external hard disk.
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Apr 8, 2011
I am trying to install Ubuntu to an external usb hard drive (WD Elements SE). I am also choosing to install the grub bootloader to this disk (/dev/sdb) because I do not want anything modified on the internal drive. The installation appears to go okay, but when I try to boot to the usb drive, I get the error, "no boot sector on usb device" and it immediately falls back to my interal drive. I have tried this installation with both 10.10 (amd64) and 11.04 (amd64). How can I fix this?
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Jan 25, 2010
I got a dell inspiron 1501 laptop with a 80Gb sata drive what is the best solution to add data storage space for someone that love to have multiples operating systems at hand Note: I use mostly linux so I won't need to change my laptop for many years maybe ...
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Mar 16, 2010
My parents bought a new hard drive for a laptop that I've owned for several years. It's much larger than the current one, so I plan on splitting it up to dual boot it with Ubuntu.I have no problem with partitioning a drive (I always keep a LiveCD handy), but my question is this: how can I go about moving the existing partition to the new drive? This is a laptop, so I can't simply plug the new drive into another slot.
Also, even if I manage to move it, will Windows still work on the new drive in a larger partition? I've had this laptop for quite a while, and I've lost the recovery discs that came with it a long time ago. I also have a lot of software without CDs to reinstall them with. This makes not reinstalling Windows a high priority.
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May 1, 2010
Trying to install Fedora 12 using the 6 CDs. Trying to install on an older x86 box.Problem is that when detecting my hard drive, Fedora 12 recognizes it as a sda hard drive instead of hda hard drive. I have no SCSI connected to my computer what so ever. It's an old fashion PATA Western Digital hard drive.If I proceed with the install, Fedora 12 only installs 200MB of the OS from the first CD only. No options for additional software or anything.
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Mar 21, 2009
Sometimes when I do anything write heavy such as transferring backup or downloading large files from the net, the machine crashes almost completely.
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Jun 3, 2011
I have a laptop with only 30GB storage and I want to install Lubuntu in virtual box but Lubuntu needs 5GB of storage space which i dont have. Could i use an external 160GB hard drive to act as the hard drive for the virtual machine without affecting the files that are already on the external hard drive
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Jan 14, 2009
I have 2 ubuntu's: 1 on my ineternal hard drive, 1 on my external
When I startup without my ext drive =>GRUB error 21.
And when I plug it in I can choose: the standard ubuntu kernel is the one on my external, and the original one is listed under other...
I'd like to be able to startup without external hard drive and make the ubuntu on my internal drve the standard.
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Apr 23, 2010
I have a CPLD (EPM240100T) chip that has data type of 16 bits, but the CPU access it using 8 bit. How do I switch the CPU mode (to 16 bits) to access this chip?
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Mar 17, 2011
I am running Ubuntu 10.10 64. I have a RAID array consisting of two 1 TB HDD's, controlled by my on-board RAID controller. I have a dual-boot of Ubuntu 10.10 and Windows. The RAID array is mapped in /dev/mapper, and here is the output of sudo dmraid -ay
Code:
RAID set "pdc_dedfhcfdee" already active
RAID set "pdc_dedfhcfdee1" already active
RAID set "pdc_dedfhcfdee2" already active
RAID set "pdc_dedfhcfdee3" already active
[Code]....
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Aug 6, 2010
I have 2 HP DL585 servers with Emulex fibre channel cards that were originally running RHEL 5.3 and 5.2 with kernel 2.6.18-92.1.22.el5 connected to a san.I have now patched these to RHEL 5.5, kernel 2.6.194-8.1.el5.The san team have moved the cabling from a standard san switch to a fabric san switch and I have tried to configure multipath.Since the cable move, the servers display 2 lines of:shpchp:shpc_init: cannot reserve mmio region then the boot halts with sda5 device or resource busy.
Returning the cables to the original switch and removing the multipath config allows the servers to boot. What is the shpchp error and is this causing the problem?Why would changing the switch the cable plugs into cause the server to fail to boot with the device busy message?Also, it's not easy to arrange downtime on these servers, so I don't know when I'll next have a chance to reboot them.
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Dec 18, 2009
I am using a QLA2462 and have got FC storage attached through a brocade switch. As soon when I add more storage for this server on this switch my device naming shifts and this new storage comes in between e.g. as sdb, and the other 2 go to sdc and sdd. I looked around but I can't find a good solution for SuSe 11.2.
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Jan 30, 2010
my computer is connected to my TV through HDMI using ATI HDMI output. I have written a small script to switch display from monitor to TV when a want to watch a DVD, but I didn't find how to switch sound from speakers to HDMI in command line. For the moment I have to open KDE system settings -> Multimedia and move sound devices by hand.
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Nov 4, 2010
I am beginner in UBUNTO 10.04 LTS. I have a mobile broadband of Relience which use the device of Huawei EC 1262. I have a problem with this modem. when i installed required packages for this device like usbswitch, wvdial etc, my internet connect works fine but as i switch off the PC and restart, PC can not detect the modem, it detect as mass storage device. Is there any command/option that i switch the mass storage device into modem in the terminal window or on the GUI platform mean on the desktop screen.
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Jan 17, 2011
I recently bought 320 GB Trancend external hard disk and working fine days back.Earlier i could copy from and to the hard disk with out any issue. I dont know what happened after that now i am not able to write any files in to the external hard disk. This is not NTFS formatted device. here is some of the out put from terminal.
Code:
sundar@sundar-sundar:~$ fdisk -l
Disk /dev/sda: 120.0 GB, 120034123776 bytes
[code]...
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Sep 11, 2010
I have been trying to install centos on my hp servers and when i get to partitions my hard drives the OS does not detect any harddrives. I have 4 scsi drives and i believe a intergrated smart array controller.
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Mar 29, 2010
I am trying to switch from the video device built into the mother board, to a card i just put into my machine. I'm using gnome and don't know where to start. I shouldn't need new drivers (based on a possible misunderstanding) because I am going from a nvidia 6100 to a 8600. I have looked in various places like the control center but haven't had any luck. I just started using linux and have very little experience in the terminal. Issues with the current card are stopping me in my learning process.
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