Ubuntu Installation :: Creating 4KB Aligned Partitions During 10.04 Install?
May 1, 2010
I'm currently running a Ubuntu 9.10 64bit machine with one of those 2TB WD disks that does have 4KB blocks.Unfortunately the current partition layout is misaligned, so I plan to back up my home directory and start fresh with a 10.04 install, trying to make the partitions aligned as suggested here:what I'm wondering is, does the 10.04 partitioning program take care of the alignment today or I have to resort doing manual partitioning with a separate tool?
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Jul 17, 2010
After reading Markus Ewald blogpost on http:[url]...n-ssd-on-linux about Aligning an SSD on Linux I decided to give it a try.I have bought two 80 GB Intel X25-M SSD for my home server. The plan is to install Ubuntu 10.04 64-bit server and use the SSDs as system discs and vmware data storage using software raid for redundancy.After reading the blog post I am not sure how to make all my partitions aligned and set up on EBS (Erase Boundary Size)I am planning for four partitions:Boot, size 1GB
Root, size 25GB
Swap, size 4GB
Data storage for vmware server, size 40GB
According to Markus Ewald I should use 32 heads and 32 sectors.Using the live CD, I started using fdisk -S 32 -H 32 /dev/sda.Fdisk can create partitions using cylinders or sectors, and now I ran into trouble.
First partition /boot must start on cylinder 2 (or sector 1024). Size is 1 GB and the following partition should be aligned and start on a new EBS block. How do I do this with fdisk?Should the next partition start on a new cylinder? Otherwise, after formatting, fdisk gives a warning that the partition is not aligned to the cylinder size? The overall question is how to format four aligned partitions which all are aligned with Intels X25-M EBS. EBS for Intel X25-M is either 128KB or 512KB (Have not found a confirmed value yet)
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Aug 6, 2010
I use with 11.2 a network without problems.Now I installed in the same PC on another hdd 11.3 and get in yast2 network the messages:eth0 not aligned and for wlan too.My driver realtek r8192s_usb What can I do? adda7,
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Sep 30, 2010
I have a dell poweredge 2950 server which had red hat on it. I have installed ubuntu on top of it. I have replaced master boot record during the installation of ubuntu as I dont want use red hat anymore. During the installation it asked me for the space I wanted to give for Ubuntu and I provided 10GB. Now I can use only 10GB of my harddrive until I mount other partitions correct?
So when I type sudo fdisk -l I get the below printed:
Code:
Disk /dev/sda: 146.2 GB, 146163105792 bytes
255 heads, 63 sectors/track, 17769 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
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Jan 19, 2010
I have been using GHOST for quite a few years to back up my Windoze partitions from NTFS to a series of images on a fat32 partition. I usually boot off a DOS7 bootable CD and simply ghost over to the fat32 partition.
I am rebuilding my laptops and desktops to dual boot Windows7 and Suse 11.2
My goal is to create restore images from my NTFS and ext3 partitions into directories on the fat32 partition for a restoration to my "gold baseline" build after any corruption.
My partition layout is below. This is output from gdisk.exe in DOS7. It's an 80gig drive.
1 = Windows-7
2 = /boot
3 = swap
5 = /
6 = /fat32
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Oct 30, 2010
My problem is that every time I try to install a version of Linux, my PC freezes(before or after creating the partitions) and just stops installing. I can't move the mouse cursor and that's it. This problem occured in trying to install Ubuntu and Fedora from cd and usb.
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Jun 30, 2010
I am installing Linux on some spare space I left over from my previous two Windows installations.
From within Linux, what's the most risk-free way of imaging these two partitions and saving them to a single image file or archive? I want to preserve the entire partition because I have no idea what I may have forgotten to copy. What is the most suitable program that can do this?
Is there any way to run the partition in a virtual machine at a later date?
After this is done, I want to delete those old partitions and extend my Linux ones.
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Jan 6, 2011
I have what I thought was a simple task of creating ISO images of my Windows 7 system partion and boot partiton (the C drive) on my physical hard drive that I could use to load Windows 7 onto a virtual machine. Anyway, I'm running Ubuntu off the CD drive and I can see my drive partions (checked using the fdisk -l command). I have tried many iterations of the mkisofs command, but no matter what I do I get the error message: unable to open disk image file 'dev/sdb/win7sys.iso'. I don't understand why it's trying to open an ISO file it is supposed to be creating. The -o FILE option sets the output file name, so the message makes no sense to me. Below is an example of a simple and longer version with more options that I have tried to create an image of my sytem partiton (sda1) and save it on an external drive (sdb) with the file name: win7sys.iso (the next step I think would be to create or merge both partition images as one iso file for the VM). But I can't get past this error.
Can anybody tell me what I'm doing wrong?
sudo mkisofs -o dev/sdb/win7sys.iso /dev/sda1
sudo sudo mkisofs -input-charset iso8859-1 -V win7sys -o dev/sdb/win7sys.iso /dev/sda1
* Note that the output after the -o parameter is the desired destination /dev/sdb (my external drive) for the image file and /dev/sda1 is my Windows 7 system or boot partition (sda2 is what Windows sees as the C drive).
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May 27, 2010
I'm trying to create some Linux partitions to install Slackware on my Lenovo W510 notebook and I'm getting some partition "errors" when using fdisk or cfdisk during the Slackware install. I have a feeling this is due to the hidden system restore partition and was wondering how others have dealt with this.
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Feb 8, 2011
My chief file server (Dell PE R300) died last week with a disk error, and because it serves the /usr/local and /home partitions via NFS to my ~60 desktops, nobody could do any work until I managed to rig up another server and pull data off the backups. I'm using RHEL 4.To avoid this in future my plan is to knock up a dual server solution with DRDB and Heartbeat.In the meantime, is there a better way to allow desktop users to carry on working as normal, without relying on the file server too much? i.e. something better than NFS but not LDAP (I don't want to implement this just yet as the organisation as a whole may do this in the future)? My users need to be able to access the same home area on any linux desktop managed by me.Also, to implement DRDB/Heartbeat, it might be best to have the home areas on an external array, is that right? Can anybody recommend some hardware?
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Dec 21, 2010
I am rebuilding a bunch of servers and want to do it right. They are Dell R200s and R300s with on-board LSI SAS1068E SCSI controllers with 2 SATA drives. The only RAID level supported on these cards is RAID 1. So, to the server, we have 148GB of space to deal with. They currently run 32-bit Ubuntu 8.10; I will be installing x64 Ubuntu 10.04.
I have always seen that it is best practice to partition in such a way that /boot, /var/log, /temp, and /home for example are separated out from /. Usually this is on a RAID5 or higher box. Is there any benefit to doing that sort of thing on a RAID1 box? I realize that this is in some ways a matter of opinion, but I would like the opinion of folks with experience. I'm pretty new to Linux in general.
The main services running on these boxes are Apache2, Tomcat6, MySQL, and Java.
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Mar 15, 2011
I have a requirement to create more than one user (one initial user with sudoer privs and one "user" user that has no special privs) upon installation of xubuntu 10.04 or 10.10 (doesn't matter). My goal is to create a "automatic" installation process with as little user interaction as possible through use of preseeding and remastersys so that all the programs and their configurations are set upon first boot. If this is not possible, (which I don't believe it is, but it's Linux!) then I think I can make use of a bash script that will run on first boot of the operating system and then delete itself so that it does not run again. My questions are:
* Is there anyway to create more than one user upon or during installation?
* If no to the above, how would I go about making a bash script that runs on first boot and deletes itself after being ran?
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Mar 25, 2010
I want to install ubuntu 9.10 on my HP nx9420. I left 48GB of unallocated space in between of windows and hp recovery partition. I attached screenshot of GParted. I need to make /dev/sda7 the home partition.
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May 11, 2010
I am trying to install Ubuntu 10.04 on my Desktop and I am unable to see any partitions when trying to install I also checked to see if the partition manager would be able to see them and no luck there either.I already have windows xp and OpenSuse installed on the hard drive.
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Mar 30, 2011
I am trying to duel boot win 7 and ubuntu 10.10. I have been dealing with this all day and cant figure out what's is going on. I create the partitions in windows and then reboot using a CD but when I go to select a oartition ubuntu do sent see any partitions its a totally blank drive. I have even wiped the drive totally and tried fresh install of windows and then creating partitions', even booted into the live CD area and it still dosent see any partitions just a blank drive. What am I doing wrong, or what is going wrong to cause this?
Running windows 7 x64 trying to install 10.10 x64
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Jun 28, 2010
I purchased a new HD and my goal is to have a Windows partition, an Ubuntu partition, (a swap partition of course), and large fat32 partition for storing data to be used on both the Windows and the Ubuntu side.
I am installing from USB and do not yet have a copy of Windows to install. I keep getting an error saying that the attempt to mount vfat failed.
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Mar 22, 2011
I used Ubuntu before, without problems but since the 10.04 version it won't recognize my partitions. I formated my laptop and partitioned it, installed Windows 7 64bit, which I need for my work, and wanted now to install Ubuntu 10.04/10. I then used GParted to check my Harddisk and it is having troubles to recognize my partitions, too while Windows finds them. GParted is giving me an error message saying my partitions are oversized. I am still in the beginning of my Linux experiences and so I don't know what to do. I have two 250GB harddisks (how Windows recognizes them),
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Feb 24, 2010
I'm trying to install Ubuntu 9.10 on a Asus P5KPL-VM mainboard. However the installation doesn't recognize my partitions. If I just boot Ubuntu the partitions are recognized with GParted and by just mounting them and browsing in file explorer. I'm using a SATA disk. I've tried boot option pci=nommconf irqpoll as found in this thread [URL] with no success.
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May 2, 2010
trying to install 10.04, once i reach the dialog where i'm supposed to select partitions for mount/install, the installer reports my HDD is empty. it wants to create a partition table and proceed from there.in fact, my 1TB disk is 50% full and contains 10 partitions, including /boot /home, swap (which i wanna reuse) and 2 other OS partitions. these partitions do show up when running nautilus in 10.04 live, also "fdisk -l" shows them - the installer does not.
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Mar 3, 2010
Xubuntu 9.04 installation CD not detecting any of the current partitions. This all started when I reinstalled windows XP a few days ago.After, the computer wouldn't boot into GRUB and would boot directly into windows.Other threads have dealt with a similar issue, that of overlapping partitions causing libparted/parted/gparted to detect the whole drive as unallocated space. The problem in these threads seemed to be a corrupted partition table, in which the partitions overlapped with each other. So of course I checked the output of fdisk -l for overlapping partitions, but I don't see any obvious overlapping partitions. I've noticed that the partition that used to be linux swap isn't showing up in the partition table at all. I might just be missing something simple here and would like another set of eyes to help me figure this one out. Does the problem have anything to do with the partition table being out of order (ie. not in order of what regions they cover on the drive)? From the liveCD I've run
Code:
sudo fdisk -lu
sudo sfdisk -d
sudo parted /dev/sda print
and have received the following output:
Code:
ubuntu@ubuntu:/mnt$ sudo fdisk -lu
omitting empty partition (5)
Disk /dev/sda: 60.0 GB, 60011642880 bytes
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Feb 9, 2011
I am installing Ubuntu on the same hard drive as Windows 7. The partitions of Windows 7 have already occupied the left part of the hard drive. From left to right, the Windows partitions are one partition for Windows booting, one for Windows OS and software installation, and one for data which is planned to mount on Ubuntu. I was wondering how to arrange the order of partitions of root, home and swap, i.e. which is on the left just besides one Windows partition, which is in the middle and which is on the far right?
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Jan 9, 2010
I have vista and opensuse 11.2 on my computer, the problem is i can't open ext3 partitions from vista but i can the other way. I tried Ext2fsd but the linux partition is always in a read only mood even when i change this option. Also, all folders are empty I downloaded the program as admin and compatable with XP SP2.
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Jul 2, 2010
HDD with four partitions: Three DOS bootable primary partitions are located in the head, and the residual extended partition is divided into several logical drives.
1st trial: 10.04 installer recognized the last largest logical drive for system installation, but installer truncated the extended partition, and created the "terrible" 5th primary partition at the end of the HDD. GParted and other utilities cannot access to this 5th primary partition. (So, I restored the lost partition table on the HDD manually by MBM. But several OS were broken.)
2nd trial: To avoid making this "terrible" 5th primary partition, I located the largest logical drive for installation at not of the end.10.04 installer recognized this logical drive, but failed again.I tried GParted. but also failed to formating to ext4.Maybe, 10.04 installer failed at this formating step. Logical drives are not supported in 10.04 ?
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Feb 9, 2011
I am attempting to install 10.10 from the iso because I have no working cdrom. I uncompressed the .iso to a ext3 partitions and put the correct entries in the menu.lst file. It starts ok. The problem occurs when I attempt to install to the hard drive. At a point I get the error,
Failed to unmount partitions The installer needs to commit changes to the partition tables, but cannot do so because partitions on the following mount points could not be unmounted./cdrom I have a choice of continue or go back. If I continue the install hangs. If I go back I cannot continue. How do I fix this problem?
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May 10, 2011
I have Ubuntu 10.04 (32bit) alongside Windows Vista currently. I tried to install Ubuntu 11.04 (64bit) from a bootable USB stick and found out that none of the current partitions are visible.
My PC is a Dell Inspiron 1525 with dual core Pentiums. Here are my partitions. I am reporting all this back from my current, stable Ubuntu 10.04 platform:
Code:
~$ sudo fdisk -l
Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
[Code]....
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Nov 1, 2010
I have tried 4 times now to install but it keeps freezing. I wiped my hdd with a tool from UBCD and im starting fresh with a full install of Ubuntu 10.10.I'm installing from a LiveCD. Should I format the hdd in some way before install?
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Feb 16, 2010
Having an issue with a fresh install which gets stuck at partitions formatting 33%. Tried different HDD's, 2 optical drives, 4 sticks of RAM, different SATA cable, disconnect floppy. Have tried both normal and alt cd images using different burn speeds.
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Feb 14, 2011
Hey guys,
I' trying to install 10.10 Desktop from a CD onto a Dell E5410 notebook with Windows 7 installed.
The problem is that during the installation, the installer doesn't see the Windows partition, moreover, it doesn't see _any_ other partition.
I've tried with CentOS 5.5 as well and it returned some error related to GPT Partition Table corrupt which might have been corrupted by a software (or not).
Removing Windows 7 completely is not an option, there's a bunch of business applications which will not run on Linux even with Wine.
I'm not sure if the problem lies on the hardware, or the installer.
The BIOS provides advanced UEFI boot options and legacy boot, but this doesn't explain why no partition is discovered.
Tech specs: core i5, 4GB ram, 320 GB disk space. The installer is 32 bit, but I'm quite the architecture doesn't really matter.
If someone has more knowledge about this kind of issue, any answer is welcome.
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Jun 17, 2010
I'm an old user of Ubuntu/Linux but have stumbled across my first major problem in years. I just can't get my head around it.I own a Asus Eee Pc 1005HA it has roughly 160gb and is currently running WinXP. I'm trying to install the latest Netbook remix 10.04 onto the machine as a dual boot option.I've loaded the iso onto a usb drive and everything works perfectly. The problem is during installation. I can't work out how to set up the partitions for a dual boot option. Below is the current configuration on the system.
/DEV/SDA
/DEV/SDA1/NTFS 77375MB Windows XP Partition
/DEV/SDA2/NTFS 77366MB Free space
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I would like to use the free space as my Ubuntu installation. Can anyone advise me on the best way to install this without affecting my WinXP system.
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Oct 11, 2010
I'm trying to install Ubuntu 10.10 in a desktop computer with three disks. SDA with NTFS in SDA1, where I have Windows XP, SDB where I had Ubuntu 10.04, and SDC where I have an NTFS partition. I want to install Ubuntu 10.10 in SDB without loosing the data in SDA and SDC. When I try to install it, when I choose specify manual partition, I only find this: Where is SDB abd SDC? What do I choose in Device for Boot Loader Installation?
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