The GUID Partition Table (GPT) is a method of partitioning disks. It features up to 128 partitions by default and it uses 64-bit pointers, which means it fully supports disks of up to 8ZiB, as opposed to the 2TiB limit of the older Master Boot Record (MBR) partitioning scheme. GPT is most often used ...

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Ubuntu 14.04 single-boot with UEFI-mode enabled

I recently purchased a Dell Vostro 5470 with a pre-installed Windows 8 OEM on a HDD 500GB. Now I'm trying to replace the HDD with a Sandisk SSD 240GB as my main disk (next step will be use the HDD ...
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1answer
63 views

Partitions Grub UEFI GPT MBR

I'm having a problem with the partitions in my system. Yesterday, I wanted to try Arch Linux, so I installed it in a new partition and in the process I was told, since my system is UEFI, I had to ...
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37 views

HDD with broken MBR and GPT

My HDD is broken because of my Windows Technical Preview. I updated the WTP, but after updating i could not boot (i have ubuntu installed alongside). When i boot i could not go to the BIOS (only saw a ...
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1answer
44 views

3TB partition disappeared by Windows 7

I am wondering if anyone can help me with a problem... I have a dual-boot Ubuntu and Windows 7 system. I bought a new 3TB HDD as I needed more storage space (the HDD is not used to boot the system). ...
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1answer
101 views

Cannot mount GPT Windows partition

I had a Windows 7 machine with 167GB. I wanted to install Ubuntu on it, so I shrank the partition into 111GB and 56GB. Afterwards I installed Ubuntu 14.10 32-bit in the newly created 56GB partition. ...
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1answer
68 views

problem on dual boot ubuntu 14.04.1 alongside windows 7

I have lenovo e530(core i5). when I want to install ubuntu alongside windows 7(ultimate), in the menu i select install alongside, the continue change to restart to continue and when I press it, my ...
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1answer
147 views

Dual boot Windows 8.1 Ubuntu EFI GPT: rEFInd won't start automatically

My machine is an HP DM1-4341sa netbook which came with Windows 8. I've since wiped the disk, changed the disk type to GPT and clean installed Windows 8.1 from ISO, leaving space at the end of the ...
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0answers
129 views

How to restore a LUKS partition?

My /home partition disappeared on my main HDD. I changed SATA slots, then I got strange "no lvm available" errors during boot when usually the password would be entered (I do not have any lvm setup at ...
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19 views

How to recover a GPT after wrong zpool creation?

I run zpool create /dev/sda instead of zpool create /dev/sdaX. The command failed after ~2 seconds with an error I can't reconstruct or remember. I guess if I had sent SIGINT to zpool it would have ...
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32 views

Is it correct behavior if badblocks destroys the partition table if invoked with -n option/in non-destructive mode on a device file?

I'm having trouble to believe that badblocks didn't destroy my partition table (help for restauration shall not be the issue here), so this question came up. There's been one btrfs partition on the ...
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1answer
29 views

Problem partitioning ubuntu as dual boot

I have installed windows 8.1 (64bit), when i try to install ubuntu alongside with windows, it doesn't shows the Alongside windows option, and when we select sometlthing else option, it shows as if the ...
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1answer
158 views

GPT partitioning on a bios/non-efi motherboard with a SSD

I have a 2 year old Intel DH67CL1 BIOS motherboard(non-efi). I am reading about GPT partitioning and wonder whether it is useful in my case. I have still reservations whether to use GPT and what ...
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0answers
47 views

can not make primary patition or logical (MBR to GPT)

I wish to make dual boot windows and ubuntu on del inspion 5721 comes with ubuntu installed Hard disk consists of 3 primary and extended swap partitions In order to get new partitions from free ...
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1answer
125 views

Ubuntu / Windows 7/8 boot issue

I installed a dual boot Windows 7/8 on my laptop and now I also added a Ubuntu 14.04.1. To install Ubuntu I did an efi partition on sda1, a swap partition (sda6) and root (sda7) After the ...
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1answer
34 views

Problems restoring grub

I have used fsarchiver to move the content of my old hard drive on a new bigger SSD. Basically, one partition with Ubuntu 12.04. Everything went fine. But now I can not boot. I used GPT and I also ...
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0answers
58 views

Convert Physical to Virtual - GPT System Error

I'm trying to convert physical Ubuntu machine to virtual using VMware. I keep getting this error: "The source computer has GPT disk(s). Conversion of live computers with GPT disks is not ...
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1answer
171 views

What is the best freeware app for Windows to mount EXT4 partitions (from a GPT 4TB Disk) as RW, safely without corrupting the EXT4 partition? [duplicate]

My Computer is set up as Dualboot Windows and Ubuntu. I have 1 OS drive, and 1 hard drive with a /backup partition (which has all my family photos and data) and it is ext4. Also note... it is EXT4, ...
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0answers
102 views

USB dock for 4TB Seagate HDD only works with less then 2.2TB of data

I have one of those Seagate 4TB HD and everything went fine using GPT, I could use it normally without any problem. I used gparted to format and create the partition table as ext4. Everything changed ...
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1answer
133 views

Deleted my previous linux partition and now getting stuck at grub boot prompt when i boot from usb/ use “ubuntu” option in bios/EFI boot menu

Let me tell you the full story. I had installed ubuntu and used it. Recently i wanted to use windows only (Windows 8.1) So, i deleted the linux partitions from the diskmgmt.msc in windows.I also used ...
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1answer
3k views

How can I check and change the partition table type?

New computers that ship with Windows 8 also come with a different partition table than before. This along with the move to UEFI causes confusion, as users are unaware of the newer partition table and ...
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1answer
80 views

Migrating Ubuntu from a MBR disk to a GPT disk (non-UEFI)

The question is: how to Migrate Ubuntu installed on a LVM Logical Volume with a separate boot partition from a MBR disk to a GPT disk on non-(U)EFI hardware without data loss to enable the usage of ...
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0answers
65 views

How to re-create the partition table?

I accidentally dd the first 512 bytes using dd if=/dev/zero of=/dev/sdb bs=512 count=1 and the partition table is now gone. Is there ANY way to re-create the partition table(/dev/sdb). My hard ...
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0answers
127 views

Installer hangs on “Detecting File Systems…”

I managed to completely screw up my system while trying to install Windows 8. I decided to reinstall and only format my / and /usr partition to keep my data. My installation is now hanging on ...
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1answer
2k views

Unable to mount a partition of external 3TB hard drive..GPT warning

My external HDD has five partitions and I am able to mount 4 partitions except one (labeled office) which is of 1TB and has all my backups. I am providing more information below fdisk -l Disk ...
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0answers
134 views

Problem with the installation on ubuntu 14.04 LTS

I had a computer running Windows7 and wanted to change to Ubuntu. So I installed the 14.04 LTS version and all seemed to have gone cool. (I'd like to make clear that I want just Ubuntu in the ...
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1answer
352 views

Two partition tables are unrecognized

While trying to installing Ubuntu 14.04 as my sole operating system, I've been encountering a number of issues (Described in more depth at Ubuntu 14.04 installation crashes with "???" ...
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1answer
2k views

Delete Ubuntu from dual boot Windows 8.1 in GPT disk [duplicate]

I'm using Windows dual booting with Ubuntu. I have uninstalled, and at that time my disk was formated as MBR. After deleting all partitions of Ubuntu I choose to rebuild the MBR in my disk. That way ...
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22 views

/dev/sdb contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should [duplicate]

When I open gparted I get the following warning: /dev/sdb contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. ...
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2answers
1k views

Dual boot Windows 7 UEFI Raid with Ubuntu 14.04 Grub2 Problem

I used the intel Raid 0 to raid SSD #1 and #2 on raid 0 for video editing work, everything was good.I installed windows 7 64bit on an asus x79 deluxe motherboard on these raid 0 two ssds using ...
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1answer
140 views

Problem installing Ubuntu On Mbr disk Scheme not GPT

I'm having trouble installing Ubuntu on my Mbr disk scheme with windows 7 already installed on UEFI Legacy mode but when trying to manual specify partition for installation i found 3 more partitions ...
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0answers
2k views

How to fix “Warning: 0xEE partition doesn't start on sector 1. This can cause problems in some OSes.” [closed]

I was running fixparts to delete the stray GPT data. I got the following message Warning: 0xEE partition doesn't start on sector 1. This can cause problems in some OSes. How do I fix this? I ...
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0answers
107 views

Ubuntu and windows 8.1 dual boot gpt

I have Ubuntu 14.04 installed and I want to install windows8.1 . I have created a partition for windows . I have a separate boot partition but I heard I needed a EFI partition.I still have 300mb ...
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3answers
463 views

how to factory reset a usb?

How do you factory reset a usb? I have a hp 4gb usb that seems like it has a messed up partition table and ubuntu isn't recognizing all the space. I've tried formatting it in disks. That doesn't ...
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2answers
507 views

GPT talbe corrupt after RAID1 setup

So I'm completely new to Ubuntu and am trying to set up a backup/media server at home. I saw the guide on Lifehacker and figured I'd give it a try. My system is an i3 3225 on an Intel DH77DF mobo ...
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1answer
3k views

Unable to install Ubuntu 14.04 LTS on Sony VAIO T-Series laptop

I have a Sony VAIO T-Series (SVT15117CDS) laptop that came pre-installed with Windows 8. After having the computer for a while, I updated it to Windows 8.1. I now want to put Ubuntu 14.04 LTS onto the ...
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1answer
984 views

Completely messed up grub/efi/gpt dual boot

I seem to have almost entirely screwed up my machine. I was attempting to install an ubuntu liveusb to my external hdd, but in the process I messed up my internal setup. The external one works ;) ...
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3answers
103 views

how can I get rid of GPT if I want to install single boot Ubuntu

I have got my new laptop and want to install Ubuntu 14.04 on it(single boot system) from usb live disk. Since my disk is less than 1 TB, I want to have legacy boot and non-GPT partition. What can I do ...
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inconsistency in showing disk label

I've got my new laptop (thinkpad 440p) with windows 7.1 pre-installed and wanted to have single-boot ubuntu 14.04 on it. I wanted to change the disk partition table to "msdos" (legacy), so I change ...
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1answer
1k views

GParted claims whole hard drive is unallocated and gives warning about GPT table

For months I have been happily using my 3TB hard drive, and I still do. Today I discovered that GParted shows the whole drive (/dev/sdb) as being unallocated. The drive works fine though. Clicking for ...
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3answers
696 views

GPT partition scheme

I'm reinstalling my operating systems to use GPT and am willing to do it properly this time... I'm intending to use the following partition scheme: sda |-- sda1 500 MiB EFI |-- sda2 100 GiB Linux ...
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1answer
487 views

Reliable UEFI GPT multiboot environment creation for Ubuntu on Thinkpads

Dear Ubuntu community members, I am planning on a fresh multiboot installation environment which initially includes Ubuntu for general open software development, Windows 7 pro and later on maybe ...
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2answers
256 views

Install Windows 7 with Ubuntu in GPT UEFI mode

My computer is running Ubuntu on a disk in the markup GPT. Ubuntu runs mode UEFI (created FAT32 partition and boot loader was set there). Now I need to install Windows 7 as an alternative system for ...
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1answer
294 views

Would Ubuntu 13.10 work on unallocated space with Windows 8.1?

I've not been able to find this answer anywhere else. Are you able to install Ubuntu 13.10 alongside Windows 8.1 on unallocated space? I did this with Windows 7, but I had to cover all of those ...
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2answers
1k views

remounting read-only GPT filesystem as writable

I'm trying to read from a rescued macbook harddrive - here's the info from fdisk -l: Disk /dev/sdc: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors ...
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895 views

Dual Boot: Gparted shows unallocated [closed]

I have been searching and reading about my problem (AskUbuntu has a nice feature where it suggests threads/questions when you type your question title), but I am not sure if they are the right ...
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2answers
1k views

How can I mount software raid drive mdX with fstab

I have raid5 configure with gpt partition to allow working with drive larger the 1.6 TB Ubuntu version is 12.04 and the md drive is 5TB. with: mount -t ext3 /dev/md129 /images mount works ...
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1answer
173 views

USB Drive - Space missing after failed attempt to make it bootable

I was trying to make my USB drive bootable to install Arch (I used dd to write Arch ISO to the USB Drive) but the process was stopped half-way. The drive stopped responding so I tried sudo dd ...
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1answer
185 views

Installing 13.10 alongside preinstalled Windows 8

I followed this guide to a T: http://www.everydaylinuxuser.com/2013/09/install-ubuntu-linux-alongside-windows.html However, when I get to step 6, I just see my /dev/sda and it says it's completely ...
6
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1answer
1k views

No USB Devices picked up on restart to windows 7 from ubuntu

I have dual boot windows 7 and ubuntu 13.10 on efi Dell Inspiron 14z 5423 ultrabook. My devices are recognized well in Ubuntu. If I reboot the system (i,e switch from Ubuntu to Windows 7) and start ...
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2k views

Previously working external hard drive suddenly not detected - Ubuntu 12.04

I'm running Ubuntu 12.04 on a Lenovo IdeaPad Z580 and have been using the default Backup application with an external SATAIII hard drive. However, when I connected it via USB today, it didn't show up ...