The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

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ubuntu wont load, partition no mount point or file system

Update 24hrs, took all day. Thanks for all your help. New hard drive, Ubuntu install & then testdisk & maybe e2fsck gained almost full accesss to the failed/blocked ext4 partition (which had ...
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43 views

how to partition the mounted drives in ubuntu 14.04

i've installed ubuntu 14.04 in single boot. My hard disk have 1tb capacity. While i'm trying to install windows in place of the ubuntu it shows no drivers are found error. So i'm decided to ...
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How to install Ubuntu Desktop on XFS or BRTFS using automatic partitioning?

Currently, when install Ubuntu Desktop, and by choosing automatic partition for a brand new hard drive, there is no way to select which file system will be used for it. It auto-selects EXT4 and the ...
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13 views

Recover unreadable directory on ext4 partition

One of my directories in a ext4 filesystem on my SSD became unredable and I need to recover the files. Here is what I did to crash the filesystem: I accidentally created 1.5 million small files in ...
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22 views

problem mounting new disk partition

I'm trying to install Arch Linux for a Raspberry Pi 2 according to their instructions on http://archlinuxarm.org/platforms/armv7/broadcom/raspberry-pi-2 on a brand new 64G micro-SD card. I'm doing so ...
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23 views

Directory converted to a file

I have an external HD formatted to ext4. Somehow a directory is now showing up as a file (i.e. it is missing the 'd' in the attributes). fsck does not show any errors. I don't believe that the ...
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2answers
14 views

Does reformatting an NTFS drive to EXT4 remove the fragmented parts of it?

I purchased a 2TB hard drive that was initially formated as ntfs and have been using it on my NAS for a while. I did a scan on it and found out it was a bit fragmented. I didn't want to waste time ...
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Full disk encryption on multiple drives; ext4 and GPT partition table; enter only 1 key

I'm looking for a tutorial (with clear steps) similar to the following article, but using ext4 and GPT partition tables. Full disk encryption with Btrfs and multiple drives in Ubuntu · Bryce ...
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40 views

ext4 I/O Error after suspend - filesystem readonly

i am using ubuntu 15.10 with kernel 4.2.0-23-generic. It is installed on a compact flash card. Sometimes the system wake up and remount the root filesystem to readonly. I have to repair the filesystem ...
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28 views

Creating a new linux partition to the left of linux partition

When I moved from windows to Linux I thought I may not use it much so I only used some 60gb for Linux. But nowadays I don't touch windows. I would like to move the free space from windows partition ...
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19 views

Ext4 partition problems

I have an 1.5tb external hdd. Yesterday morning it worked well. The system accidentally freezed, and i restarted the system and i cant mount the partition. I removed the hdd from the cage, and used ...
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8 views

Convert NTFS to ext4 and encrypt? [duplicate]

Is there a way for me to convert a "live" drive (i.e. with data on it) from NTFS to EXT4 and then also encrypt it? The drives are USB connected, but not flash disks.
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53 views

Kernel fix for “file system becomes read-only” problem?

This is my first post to this list, but I've spent a lot of lurk time here; helpful place. Over the last 8 months I have encountered maybe 4 times a problem that can loosely be described as "an ext4 ...
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65 views

EXT-fs error that won't let up

I have a Xubuntu 15.10 dual boot with Windows. This started yesterday, I was trying to create a Xubuntu 15.10 USB live disk so I could help a friend. I had errors with it but now my system will ...
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66 views

Cannot fsck or e2fsck to repair disk. dumpe2fs returns “Couldn't find valid filesystem superblock.”

I've been dealing with this hard disk problem all day. External Seagate disk I've foolishly failed to back up still is recognized by PC but cannot be read. When I try to follow the steps here, it ...
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18 views

Cannot access ext4 partition

I created an ext4 partition using Disks application from Ubuntu Live CD But I cannot access it from my Ubuntu system on the same disk. It says: This location could not be displayed. You do not ...
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19 views

Wipe all erroneous inodes

My server recently crashed and left my raid6 with 8x4TB disks in a state where I had to force it to assemble. Two disks had event counters that were way behind, but the remaining 6 disks had the same ...
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28 views

partition - merge two ext4

I need to add free space into my linux partition. Actually I know how to resize NTFS partition but I can't merge with existing ext4. GPart doesn't work also GPartLive Please help
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35 views

How to get the metadata size in ext4?

i have one SSD drive and use whole partitions for my benchmark program. what i want to know is the size of metadata after some benchmark program. it's quite hard to know the number of data blocks ...
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66 views

installing (L)ubuntu 15.10 with ext4 native encryption on entire partition

I want to install (L)ubuntu from scratch and use ext4 native encryption to encrypt entire partition from root directory "/" down to the last file and have on that same partition installed the ...
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1answer
55 views

Slow transfer from internal disk to external USB hard disk

Lots of people have problem with copying to/from external USB hard disk. My system Ubuntu 14.04. External USB Seagate disk 1T originally NTFS. The disk is empty I am trying to copy 100GB to 1T disk. ...
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61 views

14.04 LTS Trim problem on an SSD

I own a Lenovo laptop with an M.2 NGFF slot. I put a 128 GB ZTC SSD card. This card is GPT partitioned and seen as sdb. I use it for the / which is EXT4 formated. Then I did a fresh install of Ubuntu ...
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115 views

Comparing NTFS and EXT4

NTFS and EXT4 File Systems. What are the key differences between them? What are the similarities between them ?
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88 views

ubuntu 14.04LTS won't boot on linode after disk resize EXT4 founded RO

I have an Ubuntu 14.04 on LINODE. I did a disk resize in the Linode GUI and it will no longer boot. This is what I see in the boot log: -- notice the weirdness around the EXT4 getting loaded RO but ...
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68 views

Change filesystem blocksize when installing 15.10

so, I'm very much out of my depth in the whole world of *nix here. I'm searching all over about file system block sizes, and I found this script which determines what I can tell are read-speeds with ...
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257 views

How to resize a partition of a GPT throught Parted Command line tool. (Using SSH Rescue Env.)

I have a Remote Dedicated Server with no Online control panel to resize partitions after initial OS install, so I am using the debian based rescue environment to manipulate the partitions unmounted. ...
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231 views

the attempt to mount a filesystem with type ext4 failed

newbie to linux/ubuntu enviorment, trying to install ubuntu but during the installation processing after selecting the region then it propts an error "the attempt to mount a filesystem with type ext4 ...
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181 views

Change ext4 to NTFS for installing Windows 7 [duplicate]

I have a new installation of Ubuntu Mate and I would like to go back to Windows. I'm aware I need to convert it to NTFS and I have tried to make Disks work but it would not allow me to change/shrink ...
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39 views

Is it possible to install Ubuntu to an ext4 while remaining other partitions to an FAT32

I have an old hard drive with windows XP and I want to switch to Ubuntu 15.04 thus removing windows XP completely which is installed in C partition. My HDD is divided to 4 FAT32 partitions: C (9.30 ...
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115 views

How to format an external hard drive to ext4 in ubuntu 15.04?

I just got a WD mybook 6TB external hard drive. Most time, I will use it to transfer files between ubuntu systems. Sometime I use it for win or mac system. So anybody could suggest how to format the ...
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75 views

Recovering deleted files on EXT4 disk

I deleted some files and folders on a external disk which I now want to "undelete", the disk uses EXT4 which makes it realy hard for me to make tools like testdisk work. I am using ubuntu 14.0 and I ...
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31 views

What is the right way to work with large external hard drives?

I own this external HD. When I sudo fdisk -l I'm given this output: zach@tux:~/code/bing$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support ...
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59 views

Data recovery (importantly .lrcat files) after formatting ext4 partition to ext4

I wanted to do clean installation of Ubuntu, so I formatted previous EXT4 partition having / mountpoint from older Ubuntu release. I then changed my mind and installed new Ubuntu to another partition, ...
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26 views

Formatted Ubuntu partition with ntfs on windows

I was running a dual boot Windows 8.1 and Ubuntu 14.04 till recently. I'd used my F: for linux and I accidentally forgot that and did a quick format on it into ntfs. I had a lot of code on linux that ...
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55 views

Large Sized HDD not recognized correctly?

Hello I have a question with newly installed HDD for my ubuntu file server. Motherboard: P7P55D-E LX<br> New HDD: WD NAS RED 4TB<br> OS : Ubuntu 14.04.1<br><br> ...
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421 views

Fixing "The ext4 file system creation in partition #1 of SCSI5 (0,0,0) (sda) failed

The other day, I was using my gaming laptop (ASUS ROG G750JM) that I got last year when it froze up and shut itself off. When I tried to reboot it has a system 32 error message, since I don't have a ...
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208 views

EXT4-fs error on Ubuntu 15.04 crashing after installing an HDD for extra space, Kernel panic on live USB boot

Earlier last week I went ahead and bought a 1TB HDD so I could store some extra files on my work machine. Now I'm having problems with the system crashing. The first time I got the following error ...
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36 views

unable to log-in normally in ubuntu 15.04

whenever i try to log in its always shows me accpi failed (AMD GRAPHICAL DRIVER). after sometimes its moved to emergency mode . after that i moving to recovery mode to bypass graphical error , i ...
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31 views

Installing Ubuntu without touching the rest of corrupted drive

I have a notebook with GPT and UEFI. This notebook contains Windows 7. But after some problems Ubuntu LiveCD destroyed partition table of this drive and maybe some data. I urgently need this ...
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118 views

Pc wont boot, I'm kinda new to ubuntu and don't know what to do

So I'll press the power button and it will say: [0.482250] ACPI PCC probe failed. starting version 219 [1.938863] EXT4-fs (sda1): ext4_check_descriptors: Checksum for group 4017 failed ...
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How to defrag ext4 file system on Ubuntu 10.04? [duplicate]

I have an Ubuntu 10.04 Server with ext4 as file system. e2fsprogs is installed, but e4defrag is only packaged since Ubuntu 12.04. How do I defrag the file system or how can I install e4defrag? Maybe ...
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block bitmap and bg descriptor inconsistent

The error : [Sun Sep 6 11:15:56 2015] EXT4-fs error (device dm-0): ext4_mb_generate_buddy:757: group 113, block bitmap and bg descriptor inconsistent: 34 vs 33 free clusters [Sun Sep 6 11:15:56 ...
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115 views

ext4magic most powerful syntax?

I am trying to recover some files on a ext4 partition. I use the ext4magic and I can recover some files but not all files. I have used the following syntaxes: ext4magic /dev/sdc1 -r -f ...
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29 views

recover lost files after online LVM resize

I did the following 5 days ago which may have triggered the problem. sudo lvextend -L +20GB /dev/vg1/filme sudo resize2fs /dev/vg1/filme Now I realize, that almost all files disappeared. Only the ...
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How to find details like whether the mounted filesystem is read only or read-write with details of status related to the disk health?

How to find details like whether the mounted file-system is read only or read-write? In addition to it how to find details of the hard disk or partition health status without affecting the data of ...
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1answer
148 views

ubuntu 14.04 not detecting external hdd ext4

I have a 3TB external hard drive that I have formatted to ext4 using gparted. Now when I plug it into my laptop ubuntu doesn't detect it at all. This is the fdisk output sudo fdisk -l Disk ...
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55 views

Can't unmount ext 4 in gparted

I wanted to add extra swap to my pc I followed lots of tutorials but i needed to make a unallocated partition and for that I needed to unmount ext4 I'm totally new in Ubuntu or linux Anybody a ...
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47 views

External EXT4 Partition vanished. Ubuntu 14.08

I've had partitions disappear before and been able to rebuild and recover, this time its different. I have a Seagate 200g drive that is a couple of years old and showing bad sectors. No problem, I ...
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2answers
320 views

Can't create ext4 partition while installing ubuntuGnome 15.04

I tried to install ubuntu Gnome 15.04 on a Sony Vaio laptop currently running openSuse 13.2. The iso's md5 checked out and the usb booted all right, but when I select delete current Os and install it ...
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74 views

How to change FileSystem from, msdos to ext3/ext4 on a specific drive

I am relatively new to Ubuntu and I have recently added a new 480Gb+ SSD drive. When I attempted to install a program onto the drive it wouldn't allow it to happen and a error would occur. I ended up ...