Blank USB flash drive = /dev/sdc
#dd if=image_with_2_partitions.img of=/dev/sdc
#ls /dev/sd*
only shows "/dev/sdc"
How do I appear /dev/sdc1 and /dev/sdb2 WITHOUT unplugging and plugging back in the USB drive?
Quote:
Error mounting: mount exited with exit code 1: helper failed with:
Error opening '/dev/sdc1': Permission denied
Failed to mount '/dev/sdc1': Permission denied
[code]....
How do I get past this error?
I've discovered Firefox Sync a while ago, and it's absolutely awesome. Now of course I'd like most of my software to work this way! So is there a way to get the same behavior with Thunderbird?
View 1 Replies View RelatedI was running 9.10-64, upgraded from 9.04 on a 160GB separate boot drive with a 1TB drive for storage. I had mdadm software RAID on 3 500GB drives. I copied off the contents of the md0 RAID device, formatted from ext3 to ext4, then copied it all back. I operated for several weeks this way with enhanced performance and no issues.note: All drives are on MB SATA-II.I wiped out everything and reloaded the 160GB drive with 10.04-64. I removed dmraid and set up mdadm as before with no immediate problems.
The next day, when I pulled up the contents of the 1TB drive (mapped to /1000), it displayed the contents of the root instead. Curious, I attempted to tunnel down to the /1000 folder from within its own listing of /, and saw no files listed. I proceeded to delete the files in the /1000 folder, whereupon I found that my system became unstable. I must have somehow been deleting files from the root itself.I reloaded again. To check if the SATA connector to the 1TB drive may be somehow suddenly faulty, I reordered the connectors and set up the boot priority in the BIOS to match the new configuration. The next morning, I was once again able to see the contents of / when ls'ing /1000. I carefully checked the entry in fstab, the fdisk -l output, and made sure that the directory wasn't somehow showing as a link.
For the next attempt I decided to take ext4 and mdadm completely out of the equation, hoping it was a bug with some combination of the two under the new kernel or something else which could be corrected by replacing the software RAID with a physical controller at a later date. Instead of RAID, I simply formatted each of the 500's as ext3 and mapped them to /500-1 through /500-3 respectively. However, after a day of normal operation, I am now able to see the contents of / when I ls /500-3. The other 4 drives appear to continue operating normally.I have been unable to pull up a similar post prior to creating this one. Perhaps I don't know how to properly search for this issue. If anyone has seen something similar, please link me to the solution.
i've just triede setting up my new raid with 4 discs however it wont let me create the raid?
Running my harddrives through a
Quote:
Promise SATA300 TX4 interface/controller
Thats my create command:
Code:
sudo mdadm --create --verbose /dev/md0 --level=5
raid-devices=4 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1
Error msg
Quote:
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 64K
mdadm: /dev/sdc1 is too small: 0K
mdadm: create aborted
if i try and do
Code:
sudo fdisk /dev/sdc
and tjek partitions with
code....
Installing in external drive at the point where to put the GRUB loader I have these choices :
1. Master Boot Record (MBR) at -dev/sda (internal HDD)
2. First Sector of boot partition - dev/sdc1 (external USB HDD)
How can I put MBR in sdc instead of sdc1?
Everytime i log into my server, I get the message Displayed "/dev/sdc1 will be checked for errors at next reboot"
However, despite many reboots this message does not clear.
I cannot run FSCK on this partition as it is the boot partition.
I would like the device to get checked at reboot, any ideas how I can trigger this check , and that might clear the message
I recently installed Ubuntu 10.04. I'm trying to become familiar with the file system. I noticed my MP3 player (USB) is not mounted automatically when I plug it into the USB cable. I searched Google to find out how to auto mount this device and it worked. However, I didn't give this enough thought to what I was doing I guess. Now if the MP3 player is not connected to the USB cable the boot process stops at the splash screen waiting for the device. The window on the screen states the following:
The disk drive for /media/sdc1/ is not ready or not present. Continue to wait or press S to skip mounting or M to manual recovery.
I don't remember what I did to start this whole mess so I don't know how to undo it? Could someone please help me undo this? I would like the device to auto mount ONLY if it's plugged in if this is possible.
I have servers which contain SATA disks and SAS disks. I was testing the speed of writing on these servers and I recognized that SAS 10.000 disks much more slowly than the SATA 7200. What do you think about this slowness? What are the reasons of this slowness?
I am giving the below rates (values) which I took from my test (from my comparisons between SAS 10.000 and SATA 7200);
dd if=/dev/zero of=bigfile.txt bs=1024 count=1000000 when this comment was run in SAS disk server, I took this output(10.000 rpm)
(a new server,2 CPU 8 core and 8 gb ram)
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 12.9662 s, 79.0 MB/s (I have not used this server yet) (hw raid1)
[Code].....
I have/had a PC with several hard drives, and a mix of ubuntu and windows on multi boot.The old boot drive died screaming, and I need to start again. (But my data is safe! yay!)
Is there anything special about which drive can be the main drive to start booting from? Or to put it another way, can I install to any of the other 3 and expect it to work, or do I need to switch them around so a different drive is on the connections for the recently dead one?
I use jpilot on opensuse 11.3 64bit to sync pim data with my Palm Treo 680 via bluetooth. This worked fine until today. Now I get the following error message when I try to sync: Syncing on device bt: Press the HotSync button now dlp_ReadSysInfo error Exiting with status YNC_ERROR_PI_CONNECT Finished.
The last successfull sync was on the 20th October and today is the 24th October. I did not change any settings in jpilot or on my palm device. So I guess there must have been an update of opensuse which causes this error. But I do not now how to look up the updates during this period or how to undo them. Was there an update between the 20th and the 24th Oktober, which might affect either jpilot or bluetooth functionality?
I've got Ubuntu One syncing a single 25MB folder on 4 computers. On one of these computers, the ubuntuone-syncdaemon process constantly pegs the CPU, using from 50-80% long after any sync-able files have been modified and successfully synced. The process is only using 8.9MB of RAM.
Specs:
Ubuntu 10.04 (lucid)
Kernel 2.6.32-24-generic
1000.8 MB RAM
Pentium 4 2.53GHz
Free disk space: 280.9 GB
System monitor shows 56.8% total RAM usage, 15.4% swap file usage.
Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps, the parameter is the maximum samples per second by which the audio is changed. -async 1 is a special case where only the start of the audio stream is corrected without any later correction.Searching the net makes one believe that this command is just some sort of magic.People just put it in the line and it just works. Isn't that nice?
It says nothing about how to change the TIME the audio starts syncing. Like do I want it to start 5 seconds delayed? Or what about 5 seconds sooner?What if the audio gets more out of sync as the video goes on? Can I slip it a little at a time? What? No magic?No one mentions a file that already has badly synced audio.So what -async 1 really does is simply start the audio at the beginning of the file. LIKE AS IF THAT ISN'T STANDARD PROCEDURE?So what is the exact solution to syncing a messed up video? And why can't it just do the proper "timestamp" sync in the first place?No docs, no info and you are left out in the cold.
It seems that selinux has stop weav to sync the bookmarks.I followed the fix code as SELinux suggested,but it can't work.Does anyone know how to solve it?
View 3 Replies View RelatedI have an external WD drive (model WD800B015) that works fine under Windows. When I try to mount it under Slack 12.2 (kernel 2.6.27.7-smp), I get a message saying "/dev/sdc1 is not a block device." WD categorically does not support Linux. A google search has not produced any useful results.
View 7 Replies View RelatedIs there a way to find the wwn id of disks mounted on a centos server. I am using san disks via iscsi connection.
View 2 Replies View Relatedi installed fedora 11 linux in my computer.but after successfull installation,i see that a message near the taskbar that "A hard is failing". what is that suppose to mean?
View 1 Replies View RelatedDoes anyone know about any usb ssd disks which work with Linux, and which Linux can boot from? If the disk also have a sata connector it will be even better.
View 3 Replies View RelatedI recently followed this guide to create a RAID1 [URL]... First I partitioned the disks with fdisk. I made the RAID array with
mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1. Then I created the filesystem with mkfs.ext3 /dev/md0.
I then mounted md0 at /Video with mount /dev/md0 /Video/ All according to the guide.. Today I made a samba-share out of /Video/Rorschach to easily put files in there from my windows7-machine (the plan is to steam from my CentOS-server to my HTPC which hasn't arrived yet). I started to put movies in there. It went just fine for a while but then I got this message: [URL]... How is that even possible when df -h looks like this?:
[code]...
Which distros are known to work with the new GPT partition tables as used with disks over 2TB?
View 5 Replies View RelatedI'm using SUSE11.1, and connected to my system, a DELL 7500, a 1.5 TB Buffalo external HD. I partitioned it in 4 sectors.After connection, nmediatly the mounted disk would appear on the screen,(each partition with its respective name), and could use it as any other folder.To unmount the external Hard disk, I just ejected each partition, and had no problem. I used the same HD with my Mc, and things were all right, I used to backup automatically the Mc. However after having been using the system in this way for more than half a year, suddenly the hard disk began to rattle...and the SUSE system on the DELL, nor the Mc can mount the external hard disk any more. Thus, the partitions can not be mounted any more. When I cd to /media/ in the SUSE, the names of the partitions appear, but they seem to be empty..On the Mc, going to /Volumes/, before the problem appeared, the names of the partitions were there... but now, they are no more and the automatic back up either.So my question is, how to mount the disk, if it needs mounting... or how I can recover the partitions and the data therein... I am clueless, after two weeks trying to solve the problem..
View 1 Replies View Relatedif there is really no need to defrag disks when we use any linux distros.
View 4 Replies View RelatedIn Fedora when we double click the Partitioned Local Hard Disks then we have to give the root password otherwise it will not open. Is there any way to read and execute the Partitioned Local Hard Disks without giving the Root Password.
View 5 Replies View Related1) Is there any Sync b/w Red Hat and CCNA.... if yes then wht are the future prospective ?
2) what s the best method to understand Linux?
Can a Mac Mini, Server edition, be booted off either of its two disks?
I'm interested in having one disk with OSX Server on it, and the other a dual boot Linux/Windows, to get around OSX's fussiness about boot loaders.
Currently when I want to wipe a USB disk with pseudorandom data in Linux I do the following:
dd if=/dev/urandom of=/dev/sdb conv=notrunc
urandom is very, very slow, it gets to the point where the bottleneck is not the device. I know of another method -- the Mersenne twister. This is used in one instance by DBAN as a PRNG to securely erase data with, and it is easily 'random' enough for wiping drives -- and it is very fast. However, I'm not sure how I would use it in Linux. Is there a Mersenne twister program which I can then pipe into dd to wipe drives with?
I have three hard drives that were previously in a Debian server setup to use LVM that I now need to access data on. The first hard drive had a boot partition along with an LVM partition, the other two hard drives were also LVM.From what I remember I have to mount all three at once for LVM to function correctly but I don't have available hardware (particularly a motherboard that can mount all old IDE).Can I use a USB<->IDE converter to image the disks, and then mount them?What Linux distro should I set up to recover the data?ow do I know what version of LVM is needed?
View 1 Replies View RelatedLinux (any distro) HowTo: Clone disks from the command line with dd [URL]
View 4 Replies View RelatedA few years ago I built a small Slackware system and, for storage, I used using a 2Gb Compact Flash card plugged into the primary IDE interface. Initially, I made a bootable CD rom, booted the new system from that, copied the file system to the CF card and then ran LILO to install a boot sector on the CF 'disk' /dev/hda. That all worked well enough.
The only trouble is that the CF card, being an early one, is rather slow and so I've just bought an Innodisk 2Gb Disk-on-Module which ought to be much faster. I have plugged that into the secondary IDE interface, I've run cfdisk to make a partition, formatted it using mkreiserfs and copied all of the contents of the CF card on /dev/hda to the new device on /dev/hdc. So far, so good. But...Now I need to run LILO from the existing CF card in /dev/hda to put a boot sector on the new /dev/hdc. Then I want to move the new device from /dev/hdc and put it in /dev/hda once it's bootable.
I'm stuck to know how to configure LILO to install a new boot sector on /dev/hdc. I don't appear to be able to make LILO understand what I'm trying to do. If I change the line 'boot = /dev/hda' in lilo.conf to 'boot = /dev/hdc', LILO aborts with an error message.
I use slackware 13.1 and I want to create a RAID level 5 with 3 disks. Should I use entire device or a partition? What the advantages and disadvantages of each case? If a use the entire device, should I create any partition on it or leave all space as free?
View 4 Replies View Related
