Run EASEUS Partition Master then click Go to main screen option. Here, select the partition which you want to install Ubuntu. In your case select 31.25GB unallocated partition and right-click on it and select Create Partition. Under the Create as drop-down, select Logical and click OK. For installing any other OS (like Ubuntu), you should have around minimum 20 gb free space for creating any extra partition. Using this tool, you can shrink your current hard disk for required space. For installing any linux distro, you should format it with ext4 journaling system for best results. If Windows 10 isn’t recognized, it likely means that Windows 10 wasn’t shut down correctly and needs some quick maintenance before the Ubuntu installer will be able to see it. Close the Ubuntu Linux installation tool and reboot into your Windows 10 PC. From there, follow the step-by-step instructions to clean your Windows 10 installation. Nov 13, 2015 This is has been a problem with Ubuntu for years, and they still haven't fixed it. It makes the boot partition too small. I'm not sure if it s a problem with Debian also and Ubuntu just inherited it, or if this is unique to Ubuntu. Mxtj posted the fix for this, but it does not always work.
- Ubuntu Installation Doesn't See Free Space On Macbook
- Ubuntu Installation Doesn't See Free Space On Hard Drive
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RAID is a method of using multiple hard drives to act as one. There are two purposes of RAID:
- Expand drive capacity: RAID 0. If you have 2 x 500 GB HDD then total space become 1 TB.
- Prevent data loss in case of drive failure: For example RAID 1, RAID 5, RAID 6, and RAID 10.
There are three ways to create a RAID:
- Software-RAID: Where the RAID is created by software.
- Hardware-RAID: A special controller used to build RAID. Hardware RAID is generally faster, and does not place load on the CPU, and hardware RAID can be used with any OS
- FakeRAID: Since RAID hardware is very expensive, many motherboard manufacturers use multi-channel controllers with special BIOS features to perform RAID. This is a form of software RAID using special drivers, and it is not necessarily faster than true software RAID. Read FakeRaidHowto for details.
- If you're building a server, the server install ISO includes the necessary options.
- If you're building a desktop then you need the 'Alternate' install ISO for Ubuntu. Read Getting Ubuntu Alternate Install disk and How to do a Ubuntu Alternate Install
- How to Burn an ISO
- Enough drives to meet the requirements of the RAID.
Install Ubuntu until you get to partitioning the disks
Partitioning the disk
Warning: the /boot filesystem cannot use any softRAID level other than 1 with the stock Ubuntu bootloader. If you want to use some other RAID level for most things, you'll need to create separate partitions and make a RAID1 device for /boot.
Warning: this will remove all data on hard drives.
1. Select 'Manual' as your partition method
2. Select your hard drive, and agree to 'Create a new empty partition table on this device ?'
3. Select the 'FREE SPACE' on the 1st drive then select 'automatically partition the free space
4. Ubuntu will create 2 partitions: / and swap, as shown below:
5. On / partition select 'bootable flag' and set it to 'on'
6. Repeat steps 2 to 5 for the other hard drive
- Once you have completed your partitioning in the main 'Partition Disks' page select 'Configure Software RAID'
- Select 'Yes'
- Select 'Create new MD drive'
- Select RAID type: RAID 0, RAID 1, RAID 5 or RAID 6
- Number of devices. RAID 0 and 1 need 2 drives. 3 for RAID 5 and 4 for RAID 6.
- Number of spare devices. Enter 0 if you have no spare drive.
- select which partitions to use.
- Repeat steps 3 to 7 with each pair of partitions you have created.
- Filesystem and mount points will need to be specified for each RAID device. By default they are set to 'do not use'.
- Once done, select finish.
In case your next HDD won't boot then simply install Grub to another drive:
If the default HDD fails then RAID will ask you to boot from a degraded disk. If your server is located in a remote area, the best practice may be to configure this to occur automatically:
- edit /etc/initramfs-tools/conf.d/mdadm
- change 'BOOT_DEGRADED=false' to 'BOOT_DEGRADED=true'
# Please provide URL to support claim: (this option is not supported from mdadm-3.2.5-5ubuntu3 / Ubuntu 14.04 onwards)
- Additionally, this can be specified on the kernel boot line with the bootdegraded=[true|false]
- You also can use #dpkg-reconfigure mdadm rather than CLI!
- shut-down your server
- remove the power and cable data of your first drive
- start your server and see if your server can boot from a degraded disk.
Provided the RAID is working fine this can be fixed with:
For those that want full control over the RAID configuration, the mdadm CLI provides this.
Two useful commands to check the status are:
Example output:
From this information you can see that the available personalities on this machine are 'raid1, raid6, raid4, and raid5' which means this machine is set-up to use raid devices configured in a raid1, raid6, raid4 and raid5 configuration.
You can also see in the three example meta devices that there are two raid 1 mirrored meta devices. These are md0 and md5. You can see that md5 is a raid1 array and made up of disk /dev/sda partition 7, and /dev/sdb partition 7, containing 62685504 blocks, with 2 out of 2 disks available and both in sync.
The same can be said of md0 only it is smaller (you can see from the blocks parameter) and is made up of /dev/sda1 and /dev/sdb1. Install avg free virus protection2017.
md6 is different in that we can see it is a raid 5 array, striped across three disks. These are /dev/sdc1, /dev/sde1 and /dev/sdd1, with a 64k 'chunk' size or write size. Algorithm 2 shows it is a write algorithm pattern, which is 'left disk to right disk' writing across the array. You can see that all three disks are present and in sync.
Replace * with the partition number.
Note: You can add, remove disks, or set them as faulty without stopping an array.
1. To stop an array, type:
Where /dev/md0 is the array device.
2. To remove a disk from an array:
Where /dev/md0 is the array device and /dev/sda is the faulty disk.
3. Add a disk to an array:
Where /dev/md0 is the array device and /dev/sda is the new disk.Note: This is not the same as 'growing' the array!
4. Start an Array, to reassemble (start) an array that was previously created:
ddadm will scan for defined arrays and start assembling it.
5. To track the status of the array as it gets started:
Ubuntu releases starting with 12.04 does not support nested raids like levels 1+0 or 5+0 due to an unresolved issue https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1171945
Resources
- http://manpages.ubuntu.com/manpages/trusty/man8/mdadm.8.html
- https://wiki.ubuntu.com/HotplugRaid Keeping your data synced and mirrored on external drives.
- http://en.wikipedia.org/wiki/RAID
- http://en.wikipedia.org/wiki/Mdadm
Guided options
Selecting “Use an entire disk” on the Guided storage configuration screen will install Ubuntu onto the selected disk, replacing any partitions or data already there.
You can choose whether or not to set up LVM, and if you do whether or not to encrypt the volume with LUKS. If you encrypt the volume, you need to choose a passphrase that will need to be entered each time the system boots.
Free skype installer for pc. If you select “Custom storage layout” no configuration will be applied to the disks.
In either case, the installer moves onto the main storage customization screen.
The main storage screen
This screen presents a summary of the current storage configuration. Each device or partition of a device corresponds to a selectable row, and pressing enter or space while a device is selected opens a menu of actions that apply to that device.
Partitions
To add a partition to a device, select “Add GPT partition” for that device.
You can leave size blank to use all the remaining space on the device.
RAID
Linux software RAID (RAID stands for “Redundant Array of Inexpensive Disks”) can be used to combine several disks into a single device that (usually) is tolerant to any one disk failure.
A software RAID device can be created out of entire disks or unformatted partitions. Select the “Create software RAID (md)” button to open the creation dialog.
The server installer supports creating devices with RAID level 0, 1, 5, 6 or 10. It does not allow customizing other options such as metadata format or RAID10 layout at this time. See the linux RAID documentation for more.
A software RAID device can be formatted and mounted directly, or partitioned into several partitions (or even be used as part of another RAID device or LVM volume group).
LVM
LVM (the “Logical Volume Manager”) is a system of managing logical volumes, or filesystems, that is much more advanced and flexible than the traditional method of partitioning a disk into one or more segments and formatting that partition with a filesystem. It can be used to combine several disks into one larger pool of storage but it offers advantages even in a single disk system, such as snapshots and easy resizing of logical volumes.
As with RAID, a LVM volume group can be created out of entire disks or unformatted partitions. Select the “Create volume group (LVM)” button to open the creation dialog.
Once a volume group has been created, it can be divided into named logical volumes which can then be formatted and mounted. It generally makes sense to leave some space in the volume group for storage of snapshots and creation of more logical volumes as needed.
The server installer does not supported configuring any of the many, many options LVM supports when creating volume groups and logical volumes.
Selecting boot devices
On all architectures other than s390x, the bootloader needs to be installed to a disk in a way such that the system firmware can find it on boot. By default, the first device to have a partition created on it is selected as a boot device but this can be changed later.
Ubuntu Installation Doesn't See Free Space On Macbook
On amd64 and arm64 systems, multiple disks can be selected as boot devices, which means a system can be configured so that it will continue to boot after a failure of any one drive (assuming the root filesystem is placed on a RAID). The bootloader will be installed to each of these drives, and the operating system configured to install new versions of grub to each drive as it is updated.
amd64 systems use grub as the bootloader. amd64 systems can boot in either UEFI or legacy (sometimes called “BIOS”) mode (many systems can be configured to boot in either mode) and the bootloader is located completely differently in the two modes.
In legacy mode, the bootloader is read from the first “sector” of a hard drive (exactly which hard drive is up to the system firmware, which can usually be configured in a vendor specific way). The installer will write grub to the start of all disks selected as a boot devices. As Grub does not entirely fit in one sector, a small unformatted partition is needed at the start of the disk, which will automatically be created when a disk is selected as a boot device (a disk with an existing GPT partition table can only be used as a boot device if it has this partition).
In UEFI mode, the bootloader loaded from a “EFI System Partition” (ESP), which is a partition with a particular type GUID. The installer automatically creates an 512MiB ESP on a disk when it is selected as a boot device and will install grub to there (a disk with an existing partition table can only be used as a boot device if it has an ESP – bootloaders for multiple operating systems can be installed into a single ESP). UEFI defines a standard way to configure the way in which the operating system is chosen on boot, and the installer uses this to configure the system to boot the just-installed operating system. One of the ESPs must be mounted at /boot/efi.
Supported arm64 servers boot using UEFI, and are configured the same way as an UEFI-booting amd64 system.
ppc64el systems also load their bootloader (petitboot, a small linux kernel) from a “PReP” partition with a special flag, so in most ways they are similar to a UEFI system. The installer only supports one PReP partition at this time.
Limitations and workarounds
Currently the installer cannot edit partition tables. You can use existing partitions or reformat a drive entirely but you cannot, for example, remove a large partition and replace it with two smaller ones.
The installer allows the creation of LVM volume groups and logical volumes and MD raid devices, but does not allow tweaking of the parameters – for example, all logical volumes are linear and all MD raid devics use the default metadata format (1.2).
These limits can both be worked around in the same way: drop to a shell and use the usual shell commands to edit the partition table or create the LV or RAID with desired parameters, and then select these partitions or devices as mount points in the installer. Any changes you make while the installer is running but before altering the storage configuration will reflected in the installer.
The installer cannot yet configure iSCSI mounts, ZFS at all, or btrfs subvolumes.
Ubuntu Installation Doesn't See Free Space On Hard Drive
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