When we copy a sector to a file like using dd command, the data in the file is of which format? and of which type of conversion is nesessary to see the data in read able formate. i have tryed the ASCII conversion in dd command but still the data is in un-readable format. and also tell that if i access hard disk sector's data using c language program and copy data to a file then which type of conversion should i do ?
View 7 RepliesMy current partition is:
I have Fedora 14 installed. I'm trying to install CentOS 5.5 from the hard disk. I copied the seven part iso to the /iso. I didn't create a directory in the /iso. I ran the md5sum on the seven parts and compared it with the md5sum that is provided on the website and they are all identical.
When I tried to install from the hard problem, the first thing is instead of sda1,2,3,5 I found the following options:
well, I selected /dev/hda2 and left the directory blank. The images can't be found. What am I doing wrong? And why is the difference between sda in the partition and hda in the installation?
I am student of MCS and working on final project. I am the user of windows xp. I am new in Linux. I am working on a project that titles "Hard disk data Recovery of ext2 and ext3 in linux". In windows, including dos.h and bios.h header files in program of c language I can send interrupt to bios and access most of the devices like parallel port, hard disks etc. But problem is that there is no bios.h and dos.h files in gcc. Now how can I access my hard drive using c program. How can I call int13h interrupt in linux or there is any other function in the linux to access the hard disk. In fact I want to access sectors of my hard disk using c language program. How can I do it?
View 2 Replies View RelatedI have never used Linux before and know nothing about it . But my cousin installed a Fedoro linux CD on my laptop which previously had Lotus symphony . Unfortunately my laptop had single partition and so Linux overrode the old OS ,ie lotus symphony .
I have some critical data on my hard disk but I have no clue how to take backup this data using Linux . I desparately need this data .
Could somebody let me know how I can access this data and take the backup ?
Last time I installed Ubuntu in a dualboot configuration with Win7 on one of my machines, my entire boot sector and Windows install got corrupted, resulting in a complete loss of all my data and requiring a fresh install of Windows.
I looked into this a bit after the fact, and it seemed to me it was due to conflicting hard disk geometry between Linux and Windows.
My question is, how likely is this to happen with Fedora? Is this because of Ubuntu? A bad install? Is there someway I can avoid this from happening when I install Fedora if it will happen?
Copy of IBM Server hard disk data to Another USB External Hard disk?
View 2 Replies View RelatedI was dual booting Ubuntu 8.10 and Windows Vista on a Acer Aspire 5920. My laptop went for service and the company said they will give me a fresh laptop instead of the one I am using now for they cannot set it right.
When I plugged in my hard disk through an external cable onto a windows machine it detected only the data present (which is almost negligible in my case) in the vista partition. I would like to transfer all the data I have from hard disk at least the one in the Ubuntu 8.10 to my new laptop on which I plan to run Ubuntu. Can someone guide me on how to go about doing it? Also is it possible to transfer all the installed softwares so that they start running in the new laptop without any extra effort?
Risk to native OS from Live CD?
when booted from linux live cd, all partitions of hard disk become accessible without any restriction. How to block this?
My hard disk is failing and I amnot able to boot into the system! Currently I have logged into the system uing Live CD! Any way to compress and back up the data in my hard disk in an efficient way!
View 6 Replies View RelatedI learned a couple of days ago why you should do regular backups. Left my laptop working for the day in hot weather. When I came back it had crashed. On reboot it no longer booted up. I could still access the BIOS and boot from alternative media but not from the hard drive. The laptop tried to access the hard disk for a couple of minutes (hard drive light was blinking) and then failed. I made an ubuntu live usb stick and am currently working from there, trying to access my hard drive so I could image my data on another disk before sending the laptop for repairs. All my data is on that disk including my passwords and the password for this site conveniently so I had to register a new account to post this thread.
The laptop is IBM Thinkpad X41. The hard drive is accessed during when boot options are presented, again when the live cd boots up and determines the hardware available and also when manually probing for hard disks using the script below. The hard disk however does not show up in dev. If I could get so far to get it there, I could use dd_rescue to image it away. My hope lies in that the drive still spins up and is accessed producing error messages, however indicating that the system still knows it exists. Excerpt from dmesg concerning the drive:
[Code].....
Is it possible to mount a 2nd hard disk without erasing the data that is already on it? If so, what command must I enter. The system recognizes that the disk is there, I just can't access the data because it hasn't been mounted.
View 5 Replies View RelatedI have 2 hard disks and all together I created 6 partion in it.On primary I installed Windows XP and REST 5 partions were having data.From Second hard disk ,I copied all the first partion data to another partions and installed Red Hat 7.It took only 3 GB all togethr for Linux Distribution.Now I need to fetch my Windows data back.I logged from the Windows XP disk and I could see the second disk through disk managemnt .But it was showing "Unhelathy".But I will not be able to retrive the data.So can Anyone give soln for this.
View 2 Replies View RelatedMy primary drive is 250GB and has the root, home and var (I'd read it's good to put var on a separate partition for MythTV which I'm planning on doing) on separate partitions. I have a second 1TB drive that I'll be using to backup the 250GB drive and also host less critical data. I've created two partitions on this drive, one 250GB and the other covering the rest of the drive. I'd like to move the Videos directory out of Home on the 250GB onto the 1TB drive but can't find a definitive way of doing this. Should I just follow this guide for moving the home folder to a new partition? Next question is when performing a backup of the 250GB drive how do I make sure it's going to the 250GB partition on the 1TB drive? Can the different partitions be mounted separately?
View 2 Replies View RelatedI have a directory /var/log/data its about 80 GB,It filling up quit rapidly.I don't have much space left in the system them So i will attaching another External HDD.My question is that i need to mount /var/log/data to new HDD.So i have old data and pulse new coming up.I don't want to copy data from /var/log/data then mount new HDD to /var/log/data you know what i am taking about is there a simple way like linking or any other.
View 4 Replies View RelatedHow to scan and fix Bad Sectors on Hard Disk without damaging data?
View 5 Replies View RelatedI am using an embedded platform in which I have connected an external harddisk (/dev/sda). The SCSI driver is present and I am using the SG_IO interface for performing the SMART commands with the Hard Disk. (Unfortunately not all the HDIO ioclts are present. So I opted for the SG_IO ioctl). But the data transfer (reading/write data from/to sector) is not working with the SG_IO ioctls. So I searched for some other options. Later in one of the places, I found that we can actually mount the /dev/sda to some mount point in /mnt and then make a XFS file system (mkfs.xfs) of this.
And then we can create the directories and do file operations on this mounted directory. Here the simple read/write systems calls can be used for this. I was thinking about this implementation. But I am confused how I can map the actual LBA (Logical Block Address) to the device file offset. I mean if I want to write to the sector 5, there will be a LBA for it. So I can do lseek on my device and then write the data there. So how the mapping between LBA and device file offset can be calculated.
How to install openSUSE with Ubuntu in dualboot? I have Ubuntu 10.04 and i want to install openSUSE 11.2 without losing any data on hard disk.
View 4 Replies View RelatedSo the first 10Gb of a 450GB NTFS partition have just accidently been written over with an Ext4 filesystem that spans the entire partition instead. all foolishness asside, what can be repaired. Now I know Ext4 likes to jot bits of meta-data down (inodes blocks) along the way, and this can be about 5% of drive capacity, that said, there's alot of small text files and stuff, coe files so forth that can surely be recovered
I've looked into magicrescue and testdisk, but they fall into the only two groups to exist:
1) Filesystem independent, that is search almost like a patern - well exactly like a pattern match, to find the header and footer of files.
2) Filesystem recovery tools, like, damaged bootsector, so forth
I need one, that will be able to extract files, Iunderstand this will be a hard task, but.... text files; surely that'll be easy, anyway. This is my backup drive, they''re both WD you see, anyway. This is important, given the coding is ASCII surely.
We have had a hardisk crash in our RAID1 webhosting server running CentOS5 and Plesk. We first realized something was wrong when our main site didn't load but showed MySQL errors. We then found out that the system was in read-only state. Something that also happened the day before yesterday, but we could fix with a FSCK. Then the system worked well til around 18 hours later when it crashed with the same sympoms. So, we rebooted the server and wanted to do a filesystem check again. But the HDD wouldnt even load. It was gone. Unfortunatelly it was not realized that the second disk in the system was also not working any more for some time now. Fortunatelly we had our main site backed up externally though. So we could re-install a fresh box and mounted the two drives to the system. We checked the harddisk. One is practically empty (the older one), the other has almost only files in 'lost + found' but these are all "numbered", no real filenames or so.
View 2 Replies View Relatedafter installing Ubuntu on one WD 500 GB hard disk and after making mistake and pasting wrong code into Terminal:my OTHER WD 500 GB hard disk that was also in the system (I guess it was "hd1") - died.The problem must be, I guess, I typed wrong code: "hd1,1" instead of "hd0,0".)500 GB (NTFS) of data was on that other (non-Ubuntu) hard disk, and now I can not access it anymore. While booting, system gives "Hard Disk Error" warning and stops.One again: I installed Ubuntu od one hard disk and at the end of instalation I pasted wrong code for GRUB, giving address of another hard disk. Now that other hard disk has error and will not work
View 3 Replies View RelatedI want to copy hard disk have ubuntu 10.04 and ext4 to 1000 hard disk for new 1000
View 2 Replies View RelatedI have a sata 320 gb with mandriva linux 2009.1 on it.And it is what curently atached to my cpu. It is shown as 'sda' in the partition table.I also have another 40gb hard disk with windows xp installed on it.It is shown as 'hda' in the partition table . Now what i want to do is attach this 40gb hard disk to my pc and configure grub on my 320gb hard disk('sda') so as to boot windows xp(which is residing on the second hard disk,'hda')Can anyone tell me if what im doing is feasible or not? If it is feasible,can anyone suggest me how to get it working. I know i just need to add 2-3 lines to my grub.conf, but dont know what exactly i need to write.
View 3 Replies View RelatedI had a dual boot (windows 7 + debian), both of them installed in my internal hard disk, with the GRUB in it. I have recently installed a second linux distro (mint), but I put it in an external hard disk. Now the GRUB allows me to boot any of the three operating systems, but I need the external disk to do it. It seems that after the mint installation the GRUB is now working from the external disk (if the external disk is not connected, the machine does not boot.) �Is there a way to change the location of the GRUB, to the internal hard disk of my laptop?
View 2 Replies View RelatedJust trying some programming with PHP. I need to write javascript code that contains some PHP code. The page extension is .php. I need to get the values from the HTML form text boxes in PHP variables without the click of submit button. I know there are these $_REQUEST, $_POST and $_GET functions that can do this. But they need a server hit for that. I need to somehow do it without hitting the server or hitting the server from javascript.
View 14 Replies View Relatedi'm trying to create simple form that will also upload only xml data. first, the user will need to upload an xml document only by clicking submit, the data will be posted to the server and the user will be redirected to uploader.php. This PHP file is going
to process the form data and do all the work.
PHP Code:
[code]....
I was using Terminal and browsing a directory in my home folder. My "home" directory is located on "/dev/sdb1". When in Terminal I typed "ls" in one of my directories and the output was garbage. The output didn't show the files in the directory. I think it said something like, "input/output error". Unfortunately, I didn't write the exact error down. Instead I rebooted.The hard disk with the problem is:
Code:
$ sudo hdparm -I /dev/sdb
[sudo] password for brian:
[code]...
I want to be able to take data in from a web form and fax the results to a remote fax machine.
Does anyone know of any software for a server that would let me do this?
If you have a hard disk image (including partition table, multiple partitions,...), is it possible to let Linux treat it as a regular hard disk?
By "regular hard disk" I mean I would like to have the image show up as, for instance, /dev/hdx and its partitions as /dev/hdx1,...
(I know I can mount one of the partitions in the image using "mount -o loop,offset=x ..." but I don't really like this option.)
i have custom programs written in Basis pro5. Standard output to a pdf virtual printer works fine. Using pdftk to overlay on to a form is hit or miss.... There are products out there like Unform that are just too expensive for my company. i have purchased another product from a company that prints the forms to the laser perfectly but i am incapable of capturing them and saving them as pdf's for archiving/emailing/faxing and i don't much care for this company.
View 2 Replies View RelatedI am on F15 32-bit with GNOME 3. I keep getting "A Hard Disk Is Failing" warnings from the Disk Utility, very frequently. Is this a serious issue? Because I knew this to be a bug in Palimpsest DU back in F13/14. Also how can I disable any notifications from this application?
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