Ubuntu :: What Is Swap And Extended
Jun 4, 2011
what exactly are my 'swap 3.1gb' and 'extended 3.1gb' partitions for? are they necessary? what would happen if i deleted them? do they have to be that big (thinking about loading ubuntu to 20gb HDD partition, but at 6gb for the other stuff, #ouch#)? What does ubuntu do about very low space when installing (i.e. in reference to the 20gb part)? why does ubuntu have these but no other Operating Systems do? Would i lose any performance without them?
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Jan 25, 2010
Can Ubuntu swap partition go in an Extended partition (a logical partition within the extended) while Ubuntu is on a Primary partition?
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Feb 1, 2010
I want to move my swap file onto a new extended hard drive.
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1243 9984366 83 Linux
/dev/sda2 1244 1305 498015 5 Extended
/dev/sda5 1244 1305 497983+ 82 Linux swap / Solaris
I want to put a 2Gb swap file on sda2.
> dd if=/dev/sda2 of=/mnt/2Gb.swap bs=1M count=2048
0+1 records in
0+1 records out
1024 bytes (1.0 kB) copied, 0.000388458 s, 2.6 MB/s
Why is this only copying 1.0kB? Do I need to format the extended drive first? I have tried specifying the block size and count a number of different ways with the same results.
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Jul 17, 2010
I have a dual boot on my laptop between XP and Ubuntu with a storage partition.that gives me total of 4 primary partition
-Windows
-Storage
-Ubuntu
-Swap
I now want to add a OSX to my laptop in tripple booth. I did shrink the windows partition and now I realized that all my partitions are primary and cannot create a new one with the space I shrink from windows.Is it possible to merge ubuntu and its swap into extended/logical partitions so I can create a new primary for Mac OS X?
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Dec 7, 2010
Lucid on an Acer Travelmate800.Can anyone tell me why I have 0k for swap space? I allocated swap which I can see in my Disk Utility's 'volumes' display.
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Aug 16, 2010
RAM for older machines like I use is fairly cheap these days. But flash memory is just as cheap or cheaper. So I'd like to ask about the feasibility of expanding my system's memory using flash memory. And about whether creating a partition for swap on the flash memory, or whether a swap file on the flash device, is the better way to go.
By flash memory I have in mind mainly USB sticks or what are sometimes called "pen drives." But I do also have CF and SD cards that, with the proper cheap adapter (one of which I already own for adapting CF) could be used to create extra swap space. So, what is the current consensus on the feasibility/advisability of using flash memory for swap? I've read about the limited write cycles of flash being an argument against using it for swap. But recent reading indicates to me that the limited write cycles problem applies mostly to older, smaller-capacity flash memory. Some will come out and say that, for larger-capacity flash memory, the life of the device is likely to exceed the amount of time your current computer will be useful (I think I've seen estimates in the range of 3-4 years life--minimum--for newer, higher-capacity flash memory).
A more persuasive argument I've heard against using flash memory for swap is that access times for these devices can be much slower than SATA, and maybe even IDE, hard drives. That would certainly dictate against using flash memory for swap.
So, how about some input on this issue? Anyone using flash memory for swap? If so, what kind (e.g., usb stick or SD/CF)? Are you using a swap file or a swap partition? How's system performance? Likewise, has anyone had flash-memory-used-as-swap die on them? The consequences would undoubtedly be dire. Also, has anyone measured flash memory access times to confirm or refute claims about slow access times? Are some types of flash memory better/worse than others in terms of access times?
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Mar 20, 2011
Does one need to Check the Swap filesystem, from time to time
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Feb 19, 2010
I know it's possible, but does anyone have a URL or tutorial on how to do this?
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Aug 27, 2010
how would I combine the 3 drives under extended. Im have issues having no drive space. so I removed some old installations and re format them but I dont know how to combine them so that their under one /home
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Sep 9, 2010
I somehow messed up my filesystem. I installed Ubuntu directly with LVM. This created an extended partition including a logical one. When I run out of space, I just increased my space (through VMware) and then added a new PRIMARY partition.
Then I added this one to the volumegroup and increased the logical volume. After I did this a few times, there were no longer any primary partitions allowed (only 4). Then I resized the FS, resized the logical volume, resized the volume group, and removed the physical volume. Now I'm no longer able to create an extended volume (only one) but it's not at the end (there are other primary partitions behind this one at the disk), so I'm not able to create some logical volumes.
What is the best possibility to add some space to the LVM and being able to do this a few times in the future again?
further info:
pvscan:
fdisk -l for sda:
There was a /dev/sda3 at the end of the disk. I already deleted this partition.
So the order on the disk is: sda1 | sda2 (extended) | sda5 (logical referred in sda2) | sda4 | free space
Does it matter that there is type "Linux" for sda4 or can I without damaging the lvm just change it (with cfdisk) to "Linux LVM"?
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Oct 1, 2010
I use Kubuntu 10.04. I want to use multiple monitors in an extended way. When i connect a monitor to my laptop, i get the same desktop view on both monitors. When i go to system settings - display - multiple monitors, i see the message: "This module is only for configuring systems with a single desktop spread across multiple monitors. You do not appear to have this configuration".
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Dec 28, 2010
Two days ago I want to expand the free room for my C: partition on my laptop, i thought that just shrink the D: partition and expand the C: and the problem solved, but it's not solved, the C: remains and can't be expanded. so i merge the D: again,but the D: status become an extended partition
After all, next morning I boot into Ubuntu and my D: are not available in "Places" menu in Ubuntu just the C: partition, so I boot from Win7 and run CHKDSK /f to my D: partition, but it's gave me no effects
Code:
sudo fdisk -l
in terminal and my D: listed as "Extended" in System type.
In my Win7, everything is alright
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Apr 14, 2011
I recently decided to resize a partition on my HDD (partition on which Ubuntu was previously installed).This was in order to remove Ubuntu from one of my HDD. I got rid of the Grub loader by booting on my windows system recovery disk and using Bootrec.exe/FixMbr and my computer now boots directly into windows. I then deleted the Ubuntu partition.
To get to the heart of the problem, I am trying to move the free space that is in the extended partition out and merge it with C. I tried doing this with my Gparted liveCD but it didn't work. I didnt have anything to save the error message onto, but I will try the process again when I get home and save the error onto my external drive so that I can post it here.
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Apr 18, 2011
Anyone know how I can get extended displays on 3 monitors. I can get the display on all 3 and extended but I can't make my middle monitor my primary display. Already tried the checkbox Primary dispaly and the command "xrandr --output DPF1 --primary"
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May 4, 2011
I'm dual booting Win7 and Maverick and I'm running low on diskspace on my Ubuntu partition.I booted into an Ubuntu 10.10 live CD and opened Gparted. After shrinking the storagepartition I wanted to grow the extended ubuntu partition into the unallocated space to the left, but for some reason it won't let me do that.
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Jul 6, 2011
The fact that there are mounted partitions can be ignored as any work to be done will be done from a LiveCD.The question is Can the extended partition - SDA4 which contains SDA5 (Maverick Meercat) and SDA6 (swap) - be moved to occupy space at the end of the drive somewhere within the unallocated partition so I can then extend SDA3 to take all of the remaining space?
At the moment using Gparted all I can do with the free space is create another partition.SDA1 through to SDA6 is a copy of the original hard-drive.The copying was done using Paragon Partition Manager (a Windows program). This caused all sorts of problems Grub, and was a PITA to sort out. The program installed its own version of the MBR which had to be sorted with a Windows 7 install disk and then I had to sort the Grub problems after.
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Mar 26, 2010
I have learned a little about LVM through tinkering but on my new setup I am having trouble. I am running Ubuntu 9.10 Server with Gnome desktop 64 bit. I started with a 2TB HD and setup LVM with a LV for my data ("Storage) that mounts at /storage. That is full so I then added a second drive 500GB, formatted, added to VG and then extended the LV "Storage" with the 500GB partition. Now the LV reads as ~2.2TB which is right. Everything is successful up to this point. Except now when I go to the mounted LV at /storage Ubuntu shows it as full and only as ~1.7TB. The 500GB were never added!
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Apr 18, 2010
I have a thinkpad T43 with a dock and a 19" Dell monitor attached. Im trying to get an extended desktop.Using the default display program (using ubuntu 9.10) I can mirror the screens just fine. But, when I click the radio button to enable the extended desktop, the monitors (both of them) go black. Some times it doesn't come out of this. (yes, I'm waiting more than 25 seconds) What can I do to make the extended desktop work? here is my display info from the command lshw:
*-display:0
description: VGA compatible controller
product: Mobile 915GM/GMS/910GML Express Graphics Controller
vendor: Intel Corporation
physical id: 2
[Code]...
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Jul 16, 2010
Something bad happened to my partition table, so right now I'm working from a Live CD. My partition table is completely screwed, although the data on the lost partitions hasn't been overwritten. I've been messing around with TestDisk for about an hour, but I still didn't figure out how to fix my problem.
Before the crash, I had 5 partitions:
And here comes the extended partition:
TestDisk can see all those five partitions. I can mark swap as Logical, but I can't do so with the 400GB NTFS partition - there is just no selection. Turning on "expert mode" didn't help. I have read about using sfdisk to fix partition table, but I don't think I'm able to do it by myself.
Here's how it looks in TestDisk:
Code:
And, here is my slightly modified sfdisk table dump:
Code:
I've filled sizes according to TestDisk's findings. First 3 partitions were OK, the problem lies in the extended partition holding 2 logical ones.
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Jul 18, 2010
My current set up in OS X has an external monitor (Acer H243H) and my MBP 13" screen as an extension. The only way for me to currently get the menus and panes on the external monitor is to turn the Macbook display off. is there any way for me to change this?
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Nov 20, 2010
I have the following disk partitions from the left side of partition table as of now:
NTFS - Primary windows vista
Extended - 3 Nos. all NTFS - middle one contains data
Unallocated space
NTFS - Primary
NTFS - Primary HP Recovery
My intention is to add unallocated space to the extended partition. Will I be able to use Gparted to do it?
Or can I install Ubuntu in one of the extended partitions and make this unallocated partition the home partition for Ubuntu. I am not able to add new partition in this unallocated space as disk manager in vista throws up an error no free disk space to complete the operation. I read in some forum that OEM installations allow only 3 primary partitions and one extended or 4 primary ones. Is it true for OEM's only or its a universal rule?
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Jul 12, 2011
I wanted to create NTFS partition from unallocated space but by my mistake that space is beyond extended partition. How can I add unallocated space to extended partition and then create NTFS partition without deleteing any partitions?
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Jan 26, 2011
Okay so first of all, let me give you a background info.I have an HP Mini 311 with a 250GB hdd and 2GB Ram. I have successfully setup a tripple-boot with SnowLeopard/Win7/Ubuntu10.10.Okay so
First, using "Disk Utility," I format the OSX partiton to Extended(journaled) and install OSX accordingly.
Second, I install Windows 7.
Third, I use Netbookinstaller to install Chameleon 2.0 onto the OSX partition.
Fourth, using DIskPart.exe i set the Win7 Partition(#3) as active and then run the Repair(and Restart) option in the Win7 USB install media, to fix some boot error I do not know much about. Then use"DIskPart. exe" again, to set the EFI partition(#1) as active partition again.I now have a fully operational dual-boot with SnowLeo and Windows 7.
I setup a triple-boot with SnowLeo/Win7/Ubuntu10.10 by using GParted to add and format 2 additional partitions. The first formatted Ext4 for Ubuntu to be installed onto and the second i set about 4GB as "Swap" area.Then i just install Ubuntu with the Grub bootloader being installed onto the same partition as Ubuntu.I now have a fully operational triple-boot with SnowLeo, Win7 and Ubuntu.So I saw this link about creating an additional "storage" partition, on a dual-boot system, and setting it up so that Windows 7 and Ubuntu can share the same files automatically.
I really want to set this up on my triple-boot system, and here is the problem i run into: Simply adding another partition, messes up my windows 7 boot entirely. And i figured out the cause of this might be due to harddrives only being able to handle 4 primary partitions. So i figure that if setup Ubuntu and the Swap-area into an Extended Partiton, this would solve all of my problems.I cannot figure out how to setup an extended partition on my harddrive without messing something use up irreparably. This is only my second
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Mar 17, 2010
I have extended desktop working on my netbook (finally, by turning off compiz), but now Gnome prefers my netbook's main screen as the main display (with the panel and such) instead of my external monitor.How can I switch this? I don't see any setting for it in the Display dialog.
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May 12, 2010
Is their a program in ubuntu that can match adobe acrobat 9 pro extended?Or what is the best ubuntu PDF program, that can allow the most features seen in adobe acrobat 9 pro extended.
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Oct 13, 2010
I have just purchased a HP netbook. I wish to install UNE on it but it already has 4 primary partitions. Is there any way I can put these in an extended partition without deleting them?
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Oct 26, 2010
I have been attempting to set up a bunch of partitions on a bunch of hard disks, in preparation for installing Maverick. I will be setting up a number of RAID partitions, so I will install from the alternate disk (ubuntu-10.10-alternate-amd64.iso). Now ever since they added support for GRUB2 and a new partition type and align-to-megabyte and a whole bunch of other goodness, partitioning has been buggy. This has been true for Maverick and Lucid. Even the 10.04.1 version (an Ubuntu LTS!) still has problems. Every time I try something else, some other bizarre bug rears its ugly head. (Yes, I have been reporting them on Launchpad when I find a new one.)
In order to move forward on this project, I have been using a variety of partitioning tools. I temporarily installed Maverick on a small partition, and have used Disk Utility (palimpsest) and GParted while booted into that. Occasionally when things get really strange I boot up the latest version of System Rescue Disk, which contains the latest version of gparted. I use these various tools to try out various partitioning schemes, just laying out empty partitions that will be formatted or assembled into RAID arrays later. When I get all the desired partitions set up, I will boot into the alternate installer and do the final installation. (I don't want to do the entire thing within the alternate installer because it makes my head hurt. I do have a lot of partitions.) This has been going on for weeks now. Every time I try something different, something weird happens, and I have to try various workarounds, or switch to different tools. Basically, my partitions eventually become unstable.
Here's the latest mind boggler: Disk Utility displays nice graphical maps of your partitions. This image includes before and after screenshots showing what happens to my partitions occasionally. We start with three primary partitions and one extended partition. The extended partition goes all the way to the end of the disk. We put a small logical partition into the extended partition, at the beginning of it. We can then click on the "free" portion of the extended partition and create additional logical partitions if we like.
Afterwards, the extended partition has magically shrunk itself down until it is the same size as the small logical partition it contains. The free space has migrated out of the extended partition, and is now useless, as you can't have more than four primary+extended partitions. Disk Utility won't let you create another partition. What happened between the Before and After pictures? I don't know. I do know that I did not ever tell any tool to change the size of any partition. Moving or resizing partitions can trigger various known bugs, so I never even try to do that, I just delete partitions and start over.
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Oct 31, 2010
I've installed Windows 7 + XP + Ubuntu 10.10 and Mac Os X on my PC. The problem is that XP wont boot. I've tried a lot of fixes for the last 2 days but still nothing. So I've come to conclusion that it might be probably due to its partition (dev/sda being inside of another Extended partition (dev/sda3) as you guys can see on the attachment. If so, how can I move it out of the extended partition.
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Feb 4, 2011
I currently use windows 7 on my laptop which gives me on average on 2 hours of battery life. If replace windows with ubuntu, would it allow more battery life time? I am a student, and I always have battery life issue when I work at uni.
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Apr 8, 2011
I have Ubuntu 10.10 installed on my 80gb hdd, disk has following partitions :
1. /dev/sda1 = /boot (500mb)
2. /dev/sda2 = / (20000mb)
3. /dev/sda3 = linux-swap (2000mb)
4. /dev/sda4 = extended (7000mb)
5. /dev/sda5 = /home (7000mb)
6. unallocated = (40000mb)
how can i use this unallocated space to create an NTFS partition.
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