Software :: Possible To Boot From Hard Disk Having RAID Partition?
Mar 28, 2010
I wanted to implement raid5 such that one partition is from my laptop's hard disk and others from other hard disks. After making one partition a raid partition, I rebooted the system. The computer stopped mid-way during booting, and brought me to the shell. On typing fsck -p, it told me an unexpected error occured in the partition which I had made for raid. Is there some condition that we cannot boot from a disk containing one of the raid partitions ?
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Sep 10, 2011
I have a broken DVD drive and no others available right now to burn a DVD iso to so I'd like to use a empty hard disk instead.
I've tried Unetbootin but that only copies a few megabytes of files - the rest of the image data in the ISO is ignored.
I have verified the ISO is valid and working with VirtualBox. It's MD5 hash is also as expected. But I need to boot at the real bios not an emulated one.
I've also tried things like:
sudo cat /disk/image.iso > /dev/sdb1
and that got "Permission denied" -
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Feb 20, 2011
Caused by Used fdisk to delete the windows partition, in my dual boot. Then I could no longer log in to ubuntu, the partition table was some how courpt and I couldnt remount I then decided to use the windows partitioner from windows setup, as I thought it is so stupid, to reformat the partition where I had ubuntu. I wanted reinstall ubuntu, and I know that during the setup I could straighten out the mess I'd made.
Windows has now installed two 8mb one cylinder partitions on my HD. When I start the PC I get a !disk error occurred Press Crlt Alt Del to restart! This happens everytime. HD boot sequence is buggered, i guess.
I can boot from other devices. USB + CD. How when I use the windows disk to boot up I can see the 2 8mb partition, which it wont let me delete. How can I delete this via linux?
Also when I try to install ubuntu from the usb drive, it stalls just after the Preparing to install part. The next screen is when you set the partition table, swap drive etc. When I quit I get the following error !Process Glib WARNING getpuuid_r() failed due to unknown id!
The usb_liveCD does however mount my hard disk partitions and luckily I have managed to back everything up to an external.
results from df
/var/log# df
Filesystem 1K-blocks Used Available Use% Mounted on
aufs 766804 68140 698664 9% /
none 760892 244 760648 1% /dev
/dev/sdb1 3911856 712128 3199728 19% /cdrom
[Code].....
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Jul 7, 2009
I 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.
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Jan 7, 2009
I'm trying to resize a partition on an IDE hard disk to use the entire disk but can not get more than a 309GB partition. I can get 295, 300, 301, 302GB, etc... fine but start getting problems with anything over 309GB. I get the following error with 310GB or more:
error: block relocator should have relocated 533 Warning: You should reinstall your boot loader before rebooting. Read section 4 of the Parted User documentation for more information. I am using Slackware 12.1, GNU parted 1.8.8, ext2 filesystem.
Some output that may be of use:
root@asus:~# parted /dev/hdb print
Model: ST3500630A (ide)
Disk /dev/hdb: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
[code].....
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Oct 16, 2009
my Fedora 11 system is not starting anylonger. It stops with the message:
Code:
VFS: Can't find ext4 filesystem on dev dm-0
The system told me since a while, that a lot of the sectors of one disk of the (software) RAID compound are failed already. So tried to disconnect each of the disks and start them separately. Unfortunaltly this is not working (for one its is not working at all, the other wents the same far as with both), when I tried to recover the system with the Fedora DVD, it said no distribution found. I am quite new and do not know so much about linux system, so i do not know what further information you could need. Maybe it can be important, that both disks are encryped (the system wents so far, that I can type in the password).
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Mar 25, 2010
Can RAID be implemented on a single hard disk ? If yes, plz give a link for it.
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Feb 25, 2010
i am currently trying to do software raid 1 on a running ubuntu 9.10 system with mdadm. I might have done something wrong and im trying to go back from the beginning. Does anyone know how to remove all the raid info from a harddisk and get it back to its original state.
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Mar 24, 2010
My system is installed on my main hd. Is possibile, if i buy a new hd, to setup a Software RAID, so with old and new hd without reinstall ubuntu?
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Jul 8, 2010
What is the best way to install Windows and Linux on two-hard-disk array? In fakeraid there are no problems in Win, but linux installation is almost impossible (i've tried unsuccessfully...). In software raid it would be impossible to share files between win and linux? And finally hardware raid is possible, but cheap controllers have low performance. Is there any other way (apart from spending a lot of $$ for adaptec controller) ?
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Jan 5, 2011
I am using Ubuntu 10.10. I have a system set up with 1tb HD. I also have another 1tb HD which I'd like to use to mirror the other drive. So if the primary HD fails I can boot and operate from the mirrored drive. I've read that this is possible by using Raid. however I am confused if it is possible to set-up with a HD which is already set-up Ubuntu system. Also what what I can make out the mother board does not have a raid option.
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Jul 2, 2011
i had installed fedora 14 into my new hardisk(1500gb) as new server the problem is how can i use the fdisk to partition the hardisk into two partition.
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Jul 27, 2010
We have a server with RAID 0 with 4 hard disks on it each 250 GB. Linux kernel must find one hard disk named: /dev/sda with 1TB capacity. right? And also we have 2 partitions on sda: sda1 and sda2. We want to add another partition but we don't have enough space.
Now the problem:
If we add another hard disk and run
Code:
fdisk -l
Will the /dev/sda space incremented automatically so we can add new partitions or we must do something?
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Aug 31, 2010
concerning Linux, mdadm, and creating RAID Array's in Debian. I've done a lot of reading and research on RAID both on this board and elsewhere (The Linux Documentation Project's Software-RAID HOWTO is especially good), but I've run across something that no one seems to explain, and I'm not sure why. I'm instructed to create partitions on the drives I wish to add to my array. These partitions inevitably take up the whole disk, and are always have their system IDs set to "Linux raid autodetect". What I don't understand is why, after creating these partitions, some guides then go on to create an array (say a RAID5 one) with just the disks themselves as members, while others go on to create the RAID5 array with the previously created partitions as members. E.g.,
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=4 /dev/sda /dev/sdb /dev/sdc /dev/sdd
vs.
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=4 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
What's the advantage of using one over the other?
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Jul 7, 2011
I need to copy data from a single HD, which used to be part of a Linux RAID 1. I've googled around, but can't find any clue how to mount partitions from this single HD.
Background: The HD comes from a linux based NAS box Synology DS207+. The NAS uses ext3 as filesystem. Both NAS disks are fine, but the other NAS hardware is dead and not worth repairing or replacing.
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Mar 9, 2011
I have two internal harddisk. Harddisk 1 has ubuntu, fedora installed and harddisk 2 has ubuntu installed. I normally connect either one, and use it. How can i always keep connect both harddisks, and at the start, select from which harddisk to boot? Or it's not possible?
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Feb 11, 2011
I have 2 identical disks originally configured as a pair for a server. Each of the disks has 2 partitions dev/sdb1,dev/sdb2. The sdb1 partitions I had configured as a raid1 mirror. The sdb2 partitions were non-raid and used as extra misc. Space. Further, the raid setup is also encrypted using dm-crypt luks. Now I want to redeploy each of the disks for new purposes. One of the disks i want to deploy exactly as before (keeping the partitions and content), however without being part of a raid array.
I've successfully deployed this disk into a new system and I am mounting the dev/sdb1 partition as dev/md0 because the disk is set to autodetect raid. Actually I am using cryptsetup and mounting with mapper. Can I get rid of the setting for auto detect on this partition without losing the data, or breaking the encryption? I just want to mount the partition as a standalone encrypted disk. Is it as simple as doing crypt setup luksOpen /dev/sdb1 then mounting it with mapper? Or do I need to change the partition in some way. Or do I simply continue to operate it as a 'broken' raid array?
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Dec 14, 2010
have Debian "testing" installed. During the installation I selected to have a separate /home partition. / partition is ~10Gb, and my /home is ~300Gb. I didn't think I would need more than 10 for /.The other night, Debian informed me that I had 0 bytes remaining on /. I purged /temp an went about my day, only to be greeted with the message again the next morning.I've tried shrinking /home and increasing / via an Ubuntu live CD with GParted, but for some reason it did not want to work. However, I am beginning to suspect that my /home folder is occupying the / partition, and not the separate /home partition.Output of fdisk -l
Code:
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1216 9764864 83 Linux
/dev/sda2 1216 38914 302803969 5 Extended
/dev/sda5 1216 1974 6082560 82 Linux swap / Solaris
/dev/sda6 1974 38914 296720384 83 Linux
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Mar 5, 2010
On my embedded linux box, running on Linux Kernel 2.6.9 embedded with BusyBox utilities.
An Objective are follow:
1/ To figure out how many partitions are on the hard disk
2/ Create a extra partition about 10GB size on the hard disk
3/ Format the partition and mount var on that partition
Only utility to perform above operations I have "sfdisk" utility from BusyBox collection. Which get installed at the time of image flash in to ROM (8mb ROM size). The following is the root directory structure where hdd as a directory mounted /mnt/hdd1
Code:
~ > ls
bin etc lib proc sbin sys var
dev hdd mnt root share tmp var_init
Within /bin sfdisk utility can be used which I tried but no avail.
Code:
~ > sfdisk -l /dev/hda
/dev/hda: No such file or directory
sfdisk: cannot open /dev/hda for reading
~ > sfdisk -l /dev/sda0
/dev/sda0: No such file or directory .....
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Sep 28, 2010
When I installed Lucid several months ago, I went ahead and let Ubuntu use the entire disk. Since then I have learned more about partitions and came to realize that I didn't have a separate /home partition, meaning that clean installs of new Ubuntu releases would wipe my data. I would like to carve my hard drive up from the LiveCD environment while preserving my current data and Lucid installation.
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Apr 2, 2009
i have Cent OS 5.2 CD (6) with me. I need to install it in my hard disk. I have already installed Windows XP in C: partition. I need to install Cent OS in D: partition. During installation process its asking for hard disk partition. In this regard, how to select the partition. I have C,D,E and F partitions and C,E and F are in common use. So i have to install Cent OS in D partition.
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Dec 6, 2010
HP Netbook Mini 210
F14 xfce
I installed F14 xfce and using the entire disk.
Code:
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 97G 4.0G 92G 5% /
tmpfs 494M 212K 494M 1% /dev/shm
/dev/sda1 485M 49M 211M 11% /boot
/dev/sda4 193G 8.5G 175G 5% /home
After I have installed all my programs, I need to install windows and I need visual studio. So I was thinking of taking 20 GB from the /home directory and using that for windows. I can use gparted. However, many posters on here think it is best to use gparted by booting from the disk. However, I cannot do this, as I don't have any DVD drivers. And I can't really afford to buy one just for this reason. What is the best way to do this?
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Oct 1, 2010
My computer has Windows and Ubuntu operating system and each is located in separate partition (dual boot).Now the disk space of Ubuntu partition is about to run out. I wonder how I can increase the disk space of Ubuntu partition.
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May 20, 2011
This is my situation, I had installed Ubuntu in my whole drive in 640Gig. Now, I want to partition it, without affecting my Ubuntu operating system. I just want 320Gig for my Ubuntu and 320 for my Windows.
I know how partition using Windows but from Linux, that I don't know.
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Apr 30, 2010
I have installed 1tb hard drive and would like to partition as follows:
1) / - 20g
2) /swap - 6G
3) /photos /150g
4) /videos /500g
5) /audio /300g
After 2-3 partition an extended partition automatically created in which I am not able to create specified capacity i.e., say I want 150g of /photos partition, the /videos partition is automatically reduced and a free space at the end appears. Some free space is always there which i am not able to understand. Nevertheless i clicked to create, but I get an error viz. 'device not created'.
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Mar 3, 2011
I want to install Cent OS5 on my machine. The Hard Disk is SATA. I want to discuss about how to custom partition the hard disk. In the old version there is a drop down list for manual partition the hard disk. like /,boot,swap,var etc etc. In the new version of centos 5 I can not see things like that. During installation process and in partition page there are things like:
Code:
Remove all partitions on selected drives and create default layout.
Remove Linux partitions on selected drives and create default layout.
Use free space on selected drives and create default layout.
Create custom layout.
When I choose custom layout it show me an error message. "An error has occurred-no invalid devices were found on which to create new files system. Please check your hardware for the cause of this problem."
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Mar 10, 2011
Newbie to Linux Ubuntu 10.10. Got the installation done on the wrong disk, How can I move the partition or uninstall?
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Jan 24, 2011
I want to configure Name Server i.e., DNS to my red hat linux box in a production enviromnt.The ram is 2 GB and Hard Disk size is 200 GB. How much space should I give /var, /usr, /boot, /root and home partition. May be I am wrong in partition point of view while installing fresh red hat but to install for home purpose and server end is different. So kindly guide me the hard disk partition size to ready it for name server.
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Sep 8, 2010
Installed 2nd hard drive, both drives non raid. Computer recognizes it but unable to boot. Is this a grub problem?
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Mar 15, 2011
I newly installed debian squeeze with software raid. The way I did was, as also given in this thread.
- I have 2 HDD with 500 GB each. For each of them, I created 3 partitions (/boot, / and swap)
- I selected the hard drive and created a new partition table
- I created a new partition that was 1GB. I then specified to use the partition as a Physical Volume for RAID. and used for /boot and enabled bootable.
- Created another partition, which is of 480 GB, and then specified to use the partition as a Physical Volume for RAID. and used for /.
- Created another partion and used for swap
Then RAID configuration:
Through Configure RAID menu -> create MD device ->
(2 for the number of drives, 0 for spare devices)
Next select the partitions you want to be members of /dev/MD0. I selected /dev/sda1 and /dev/sdb1 (for /boot)
Next select the partitions you want to be members of /dev/MD1. I selected /dev/sda6 and /dev/sdb6 (for /)
And no RAID for swap partitions
'Finish Partitioning and write changes to disk' --> Finish the rest of the install like normal. Everything is ok now, except I am not sure how to test my raid config. When I pull the power of the HDD, it only boots from one disk. I read in some forum that I may have to install GRUB manually on the other. In Debian Squeeze, there is no grub command. Not sure how to make my software raid bootable from both disk. I configured /boot partitions of both disks to be boot=yes. Not sure whether that is ok.
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