Ubuntu :: Loaded 10:04 Onto An External Drive And Boot Can't Find It - Error: No Such Device: 4368f21f-d1b6-4c60-8c6b-4d2d38d16920
Sep 23, 2010
managed to get things working so well on my laptop i thought i'd install ubuntu onto an external drive so i can boot to either xp or Ubuntu whenever i want, when i started up after the install it doesn't recognise the drive i loaded it to and appears to have lost the link to xp. the exact words are:
error: no such device: 4368f21f-d1b6-4c60-8c6b-4d2d38d16920.
grub rescue>
what i can do to get my xp back, my wife uses the xp and will kill me if i don't sort it, fortunately the comps unrealiable anyway!
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Feb 2, 2010
How do you find out which driver is being used for a certain device. Say that I run lsusb and I find "Bus 007 Device 002: ID 046d:c043 Logitech, Inc. MX320/MX400 Laser Mouse", how can I find out what the active driver for the device is?Also, is there some way to list all available drivers for a device? Is there a way to change the driver at runtime?
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Mar 17, 2011
I just compiled my first own kernel (I'm using Arch Linux), following the tutorial on the german site. Now I tried to boot it, I ended up failing with this message: Code: Waiting 10 seconds for device /dev/sda1 ... Root device '/dev/sda1' doesn't exist, Attempting to create it. ERROR: Unable to determine major/minor number of root device '/dev/sda1' Here is the important part of my menu.lst:
[Code]....
I simply copy&pasted the Arch-entry, i.e. I also had the disk by uuid there. The failure message was the same, just the root device name was the different name Also, at first I did not have the initrd line in my menu.lst (as written in my tutorial that I may not need it). In this case I had this error message:
[Code]....
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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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Sep 6, 2010
I switched to the linux-image-rt kernel a while back, and decided yesterday to switch back to linux-image-generic. Unfortunately, I couldn't remember how to do this properly, so I just uninstalled all of the linux-rt related packages and then changed the /vmlinuz and /initrd.img symbolic links back to what they used to be and rebooted. So now the machine gets stuck in a memtest whenever I boot from the HD. I'm having trouble figuring out how to fix things from a rescue CD. If I try chroot /mnt/hd (where my old system was), and then update-grub, for example, I get: /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?). So, basically I'm completely lost, but also sure that a working system isn't more than a few simple commands away. Can anyone throw me a bone?
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May 25, 2010
I have Ubuntu/Vista dual boot desktop with Single HDD (200GB) that i cloned to an external USB HDD (320GB) using clonezilla. My intention is to use the external HDD as a backup to up running in case my 3 year old desktop HDD fails. To make sure the clone is good to use if need, i connected external HDD to USB port and tried boot from it but got "Error 18". I tried to Google got some infoDid a fdisk -lu and got the following.
Code:
Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders, total 390721968 sectors
[code]....
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Sep 22, 2010
How one could determine (for use in a Bash or Python script) which device (eg /dev/sda1, /dev/hda1... etc) a ramfs was loaded from when booting from a USB drive.
I have a RIPLinux/Tinycore live USB disk that automatically needs to run a script that is stored on the same USB drive but not part of the RIPLinux/Tinycore image. (Please note that I do not want to put this script into the RIPLinux image.) I therefore would like to remix the RIPLinux/Tinycore ISO to automatically run this script once it has started up. After RIP linux has booted I would like to automatically mount the USB drive that RIPLinux/Tinycore was booted from. I need help detecting which device this is.
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Apr 20, 2010
I am trying to find out the command to list all the devices mounted at boot-time.
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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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Dec 16, 2010
I updated yesterday and now when I start my laptop it goes in to grub rescue mode. I have booted from a 'live cd' and thought I could repair grub from there. In gparted however the partition with ubuntu (sda1) is seen as unknown file system, in terminal when I list the partition table it shows up as FAT16 type. When I try a grub-install it gives this error message:
[Code]....
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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 6, 2010
I have a large external drive, which I connect to my laptop via a PCMCIA card - the machine is old and does not have USB 2.0 built in, so I use the PCMCIA card for that.
I am thinking of the following setup, and hope you can give me some tips on whether or not that would be a sound solution:
- designate a boot partition on the laptop's internal hard drive, which could store kernels
- make up a linux partition (or more than one) to use as root for any distribution on the external drive
- keep /home as separate partition on the external drive
My goal in mind is to be able to boot more than one Linux partition from the external drive. I can't make it through USB boot because the PCMCIA card is not recognized before a kernel module is loaded, and I can't use the internal USB 1.1 port for the external drive.
Do you think this is the way to go? Currently, I only have my /home partition mounted off the external drive.
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Aug 22, 2010
kde 4.3.4 kernel 2.6.32.7-smp Have Seagate 500GB (fuseblk) external usb drive that gets listed in the "Devices recently plugged in, pop-up panel" but a Verbatim 1.5TB does not. I have to mount it manually as ntfs volume.
eg bash-3.1# mount /dev/sdd1 /verbatim
/dev/sdc1 fuseblk 4.0G 598M 3.5G 15% /media/Free-4GB
/dev/sdd1 ntfs 1.4T 401G 997G 29% /verbatim
/dev/sdc2 fuseblk 462G 409G 54G 89% /media/FreeAgentDrive
When I boot using the Mint distro on same PC both ext usb drives are automounted. Looking for pointers as to why the 1.5TB verbatim disk does not automount.
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Feb 28, 2011
I had tried to install Ubuntu 10.10 on an external harddrive, the Laptop was running Vista. It all worked fine, but now, when the external hd isn't connected, I ge the message: error: no such device : ... grub rescue> the I put the ls command grub rescue> ls (hd0)(hdo,msdos3)(hd0,msdos)(hdmsdos1) Now I just want to get Vista working again, without having to connect the hd.
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Mar 27, 2011
I Installed Fedora 14 about 2 weeks ago and was just settling into using it more or les permanantly and had to turn of the power to do some maintenanace. When I rebooted I got the grub> prompt. As I have already shut down and rebooted several times over the last couple of weeks, I could not se why this happened, so I rebooted and stiull got the same problem. Things I have tried:
[code]...
I am currently using a 64 bit ASUS P75P55-M motherboard.
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Jun 5, 2010
[openSUSE 11.1, kernel 2.6.27.45-0.1-Default, Gnome 2.26.3] I have a problem where I have an external USB drive which mounts at boot, with /home aboard it along with several data-only partitions, and if I try to add another USB drive *after* boot, the system changes the device IDs previously given to the original drive. The already running sdb now becomes sdc. If a user or processes are attached to /home when this occurs they are left in the twilight zone and stuff starts crashing. An added weirdness is the newly added drive isn't stealing the sdb ID, the added drive becomes sdd instead, and nothing at all is left at the sdb ID.
Note:
- System boots from sda, a non-USB drive with the system as well as /swap onboard, that should be uninvolved with the problem.
- Among the 4 partitions of the boot-mounted USB drive there are 2 lux-encrypted partitions (ext3). One is /home (originally encrypted under 10.3 and added back after machine upgraded to 11.1) and another being a data directory (later encrypted under 11.1).
- The problem _may_ occur only when the additional added drive is also lux-encrypted, but this may or may not be always true as I have limited other USB stuff to test with, most of it is also lux-encrypted.
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Jun 17, 2011
I just plugged in a 698GB external hard drive into my computer and ran Xubuntu. But it doesn't show up on the desktop. I am new to this OS, where can I find it? I would like to make some backups.
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May 22, 2010
I initially thought the problem had to do with the Lucid Lynx upgrade, a lot of people have been reporting similar issues with drive mapping and things along those line. My issue is that an external drive, formatted in FAT32 appears to be corrupted, and overtime begins to read or mounts as 'read-only.'
What I've read, and deduced, is that this is ultimately and issue with the drive. I've backed it up, reformatted, and been able to write to the drive successfully, but I've been moving a lot of files (backing up) and the system has been reporting input/output errors in transferring some files (through the GUI).
The only thing I can think of, is that the device itself is corrupted or damaged, and that I need to be thinking of other back-up options for the future. Any suggestions on disk-doctoring? I'm hoping to do a clean-install of the OS once I back up my files manually.
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Jun 23, 2010
How do you find the device (e.g. /dev/*) for a mounted USB drive in Linux (Ubuntu 10.04)? I'm trying to format a Cruzer USB flash drive, and when I plug it in, the icon for the mounted filesystem appears on my desktop. However, when I open GParted, it doesn't list the filesystem as an option to partition.
The recommendations I've found through Google include monitoring tail -f /var/log/messages, which they claim should list the device name when the drive is mounted, but this never happens for me. I've also read that the USB drive would usually be linked to /dev/sdb, but this appears as a broken link on my filesystem. How else would I find the device?
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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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Jun 10, 2010
/dev/fd0 does not exist. I have floppy disks I wish to use.m using debian unstable.Nautilus doesn't recognize it, nor does dolphin. I have no clue if the floppies are formatted or not.fdisk -l only sees sda, my hard drive.Floppies are so neat! I want to use them in linux.
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Mar 24, 2010
I've got this hard drive that I know that is formatted to either ext3 or ext4, but I want to find out which format it is. I'm unfamiliar with many commands, I tried 'fdisk -l' but it didn't yield any useful information to me. Is there a command wherein I can easily find out the format of disks?
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Jun 1, 2011
Instructional post - medium difficulty. Installing on an older notebook (or other system) with no external bootable device available:No CD/DVD drive
No floppy
No boot to USB capability
No (usable) OS on HD
Solution went like this:Remove target HD from notebook.*
Disconnect HD from a desktop.**
[Code]...
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Jun 15, 2011
I have a 1TB usb External Hard drive (Segate), I would like to install linx on that drive. I tried red Hat it does not find hard drive. I run open suse, I partition the hard drive. After installation of disk 1 it reboots, at that point it does not go to usb external drive.
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Jul 17, 2011
I have (at least 4) native USB ports that contain flash drives. I know that the /dev/sd[abcd] devices are created in the order they were inserted, but say you have all four plugged in at boot time, or further, they can be plugged and unplugged in real time. At times, /dev/sdf, /dev/sdg, etc. are created as well. I'm ignoring external hubs for now.
I need to know which drive is plugged into the "top port on the front panel", etc, by physical location. From dmesg I can check right after booting and get the physical assignment of a PCI device, say, PCI 0000:00:10.3, as being assigned to the EHCI usb bus. From /proc/bus/usb/devices, and the "T:" field, I have learned that the physical connectors I'm interested are known as USB Bus 1, Port=00, Port=01, Port=04, and Port=05.
From lsusb I can see all sorts of information from the USB point of view, but with no /dev/sd references.
From /proc/scsi/scsi, I can see what scsi devices have been created, with a count consistent with the number of flash drives plugged in, but no USB data.
So, I can get lots of information from the USB storage point of view, and lots of information from the SCSI point of view, but nowhere can I find how to correlate them. In other words, if I want to mount the drive plugged into a given physical slot, how can I find the /dev/sd device I need to mount? udev isn't really interesting here, because I'm just looking for the information that udev would use to answer the same question.
I've done some heaving exploring in the /sys and /proc filesystems and have not yet found where the USB and SCSI worlds intersect.
The closest I have found is (where "Port" is the physical port number from above):
This seems to have some mapping to the physical port and references a "/dev/sd[a-z]" value, but I don't know how reliable it might be, nor do I know if my having to increment that physical port by 1 is meaningful. Anyone have a simpler approach?
So, my goal becomes
mount /dev/<sd that was created for the top slot> /mnt/top
mount /dev/<sd that was created for the bottom slot> /mnt/bottom etc.
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Jan 4, 2010
does anyone know that if i can boot from an external hard drive with "openSUSE" installed on it?
how about FireWire, will it work?
i'm trying to set up a triple boot for me newly bought iMac.
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May 30, 2010
I'm not sure what to do, but I just rescued photos and documents using ubuntu live cd, gddrescue and photorec. The data carving went fine and I was able to move all of my recovered jpg's into a recovery/jpg folder, as well as my word doc's into a recover/doc folder. I also have recovery/video and recovery/audio. Now here's my problem...
I used the right-click "safely remove drive" from the ubuntu interface and then unplugged my external drive. I then tried to view the recovered photos, etc on my windows 7 desktop, but when I plug in the external drive I get an error and a prompt to "format the drive" so that windows can use it.
I plugged the external drive back into my failed laptop and with the ubuntu live cd can see the drive, but none of the folders display. I can cd "change directories" to all of the folders using a terminal, but still can't see them outside of the terminal. That is, with the ubuntu interface. I'm just trying to finish up recoverying these photos, which I thought I had done.
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Jul 9, 2011
A few days back, I was moving a file from my home directory to a 1TB WD external hard drive (NTFS). In the middle of the process, the power went out so moving was interrupted. Now, the file I was trying to move is there on the external hard drive, but it can not be read, moved, renamed or removed. Besides, the destination folder on the external hard drive and all other files in it can be read, but they can't be removed or renamed.
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May 16, 2010
my simpledrive external drive works fine on windows but i keep getting this error while mounting in ubuntu 10.04 with my account so i log in using the root account and this is what i get
[code]...
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Aug 2, 2010
i have this .mkv file of a movie which is of size 7.9GB and when i try to copy it to my external drive after some time it shows a error saying "Error splicing file: file too long" so how to copy help
my external HD's file format is vfat. and i am using ubuntu 10.04
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