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

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7
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4answers
4k views

rsync not working between NTFS/FAT and EXT

I have music that I play in my car, from an FAT32 USB stick. The folder which I use to put songs on is stored on my EXT4 hard drive. I add/remove/retag songs regularly and occassionally want to ...
1
vote
2answers
26 views

Converting my hard drive to NTFS [on hold]

I have a new install of Mint and I would like to go back to back to Windows. I'm aware I need to convert it to NTFS and have tried to make gparted work but it not would allow me to change/shrink my ...
-3
votes
0answers
21 views

How make Convert partition from EXT4 to NTFS without lost data in UBUNTU? [duplicate]

How make Convert partition from EXT4 to NTFS without lost data in UBUNTU? Can I use terminal? or can I use any Software? Can you help me please? Thank you. Jan
0
votes
1answer
15 views

fstrim does not work (Ubuntu 14.04, ext4, Intel SSD 520)

I've been googling around for hours without having found an answer. I've found some hints, but they don't correlate with each other. $ sudo hdparm -I /dev/sda | grep TRIM * Data Set ...
1
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0answers
15 views

Lost all files in root partition without formatting partition and delete operation, TestDIsk is not help?

I've Windows 8.1 and Ubuntu 14.04 installed in my PC. Two system were in different disk. All disks are in GPT mode. I used one software, "Paragon ExtFS for Windows", which can mount EXT4-partition in ...
15
votes
1answer
17k views

How to expand the ext4 primary partition size in a VMware Player virtual disk?

I have a VMware Player virtual machine setup, running Ubuntu 10.04 as the a guest OS. The VM was created on a 20GB virtual drive, with a single partition for working space. Finally I got to the point ...
0
votes
0answers
15 views

Input/output error on mounted usb disk

I have an external usb disk mounted to my machine, and everything works fine for hours or days, but eventually I cannot access the disk anymore. When I try to list the mounted directory, I get ls: ...
1
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0answers
242 views

Bcache hangs on Ubuntu 14.04

I successfully setup my system to use bache in /home partition (200GB SSD partition as cache for 500 GB HDD partition). However, I keep receiving these messages: INFO: task bcache_writebac:222 ...
0
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0answers
18 views

Backup broken Device?

I have a USB-stick with a livesystem on it , but as I made a backup of the stick it had some read-write errors at around the half of the system's size. So I tried to boot it up again and at this point ...
-1
votes
0answers
13 views

“the ext4 file system creation in partition #2 of scsI1 (0,0,0) (sdb) failed” [closed]

I have no real computer skill if that Isn't, my Asus Notebook had its OS deleted and now I'm trying to install Ubuntu. i get this message most of the time, if i make it all the way through the ...
0
votes
0answers
38 views

Why is my read speed limited to 40 MB/s (< 25 %) reading from ext4 when compress-force is zlib and there's no CPU usage?

I'm moving data from an ext4 filesystem on a HDD connected with USB 3.0 which usually reads and writes with 170 MB/s to a btrfs subvolume on a SSD which usually reads and writes with 360 MB/s with ...
1
vote
4answers
42 views

Cannot uninstall Ubuntu… boot problems

I've been trying to remove Ubuntu from a laptop (separate issue), but I've not been able... any suggestions will be appreciated. Here some details: Dell Inspiron laptop, 32 bit, no UEFI secure boot ...
0
votes
1answer
29 views

ECRYPTFS_FNEK_ENCRYPTED files and folders

I had a problem using my old hard drive, so I'm willing to recover the files in it, but it is encrypted, and all the files and folders are named ENCRYPTFS_FNEK_ENCRYPTED and some gibbberish... The ...
0
votes
1answer
19 views

Copy a file from one ext4 partition to other

I have two ext4 partition and I want to copy some files from one partition to other in GUI not using terminal, but it does not allow me to do so. It simply a root permission problem. I just want to ...
-1
votes
0answers
17 views

Trouble installing Ubuntu 14.10

When I tried to installing Ubuntu 14.10 from usb drive, it get struck at some point where it says "creating ext4 file system in /dev/sda7." It is not moving after that.
64
votes
8answers
215k views

How can I resize an ext root partition at runtime?

How can I increase the size of the root partition of a system at runtime? I have a partition that is not allocated after the root partition (which is also ext4), how can I add that unallocated space ...
0
votes
0answers
13 views

gdisk before umount -> file system corrupted

I think I did something stupid, but I don't know how to fix it... Please help: I connected a NTFS format 2TB HDD to my ubuntu, and would like to format it to ext4 I mounted it, and copied the files ...
0
votes
0answers
124 views

EXT4-fs errors and sd errors. Rejecting I/O to offline device

System Configuration: Ubuntu 12.04 server 64bit HP Proliant dl140 g3 32gb of RAM Intel X5365 quad core 3GHz LSI SAS1068 2x WD black 2TB SATA HDDs in RAID 1 Errors: [ 2044.430919] EXT4-fs (sda1): ...
0
votes
1answer
25 views

Can't resize existing partition with gparted

I'm trying to resize my ext4 partition where my ubuntu (elementary os) is installed on. I started a ubuntu live cd and opened gparted, see screenshot There is no way to allocate the free space for ...
0
votes
0answers
399 views

Problem with booting Ubuntu 14.04 from a btrfs partition

I have installed Windows 8.1 Update 1. After that I have installed Ubuntu 14.04 on a btrfs partition. However, after the restart there was no GRUB menu to choose from and the system booted directly to ...
0
votes
0answers
64 views

Unable to mount usb thumb drive due to write protection

I have a thumb drive called EndroCraft-Lin, that all of a sudden turned read only, then became unable to be mounted. It's a PNY 8GB usb stick, that's formatted to an ext4 filesystem. Here's the error: ...
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0answers
12 views

Find duplicity files after using PhotoRec

I've partly formatted a disc where my duplicity files was stored. I have used PhotoRec to recover the files but now they're all unsorted and without the correct filename. I have the files separated by ...
1
vote
1answer
134 views

Format external hard drive to ext4 in command line [duplicate]

How do you format an external hard drive to ext4 via the command line in ubuntu?
11
votes
4answers
37k views

Force fsck.ext4 on reboot, but really “forceful”

One of my Ubuntu 10.04 servers is giving me trouble. When I run fsck.ext4 -n /dev/sda5 it tells me there are errors in the free inode count, free block count, and more. I have tried: touch ...
0
votes
1answer
31 views
2
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1answer
102 views

Accidentally partitioned media drive as ext3 during install (was ext4), how can I recover?

I recently did a fresh install of ubuntu on a system with an old ubuntu install. I have a separate hard-drive which used to have a single ext4 partition, but during the install I accidentally selected ...
1
vote
2answers
274 views

Accidentally formatted ext4 partition

I have just formatted an ext4 partition to fat32 using gparted. In which directions should I tread in my attempt to recover?
0
votes
0answers
92 views

Grub rescue after corrupted hard-drive ('read-only filesystem")

I run xubuntu 12.04 alongside a NTFS storage partition and a windows 8 partition. I moved my MySQL data directory off the xubuntu (ext4) partition, onto the NTFS partition, and did an import of a ...
0
votes
0answers
240 views

slow hard disk Ubunto 14.04 ext4 on thinkpad dual boot

Ext4 - is it slower? Have a Thinkpad with 8GB drive , 4 processors. Intel® Core™ i3-3110M CPU @ 2.40GHz × 4 . Ubuntu 14.04 LTS with updates applied. File reading is very slow. IDE STS hangs when a ...
2
votes
2answers
6k views

GParted merge unallocated space to ext4 partition

Here I want to merge unallocated space to ext4 partition. But during running in Ubuntu it is not allowed. Am I right? It has key picture. I must do that Ubuntu DVD booting from it and selecting try ...
0
votes
1answer
29 views

New hard drive accessible to everyone

OS: Ubuntu 14.04 desktop The only way I've found out how to gain access to a second hard drive through nautilus is to re-install Ubuntu while the hard drive is in the computer. Then, when I go to ...
0
votes
1answer
133 views

How to migrate from ext4 to zfs root filesystem with separate ext4 boot partition?

I'm trying to change my root partition from ext4 to zfs (simple partition, without ZFS volume management functions) by moving all files in a live system (Ubtunu 14.04) from the ext4 partition to an ...
0
votes
2answers
148 views

improve performance - NTFS to ext4

My laptop is 7 year old HP compaq with ubuntu 12.04. It was dual booting with windows partition. I was not using windows for the last 1 year and formatted and the windows drive and removed it. ...
1
vote
5answers
7k views

Ext4 file system format drive does not show in Windows 8

To install Ubuntu 13.04 I formatted a drive with Ext4 file system format. After format I can't open the drive from windows 8 Explorer. Whenever I try to open the drive following error shows : Thanks ...
0
votes
1answer
35 views

How to roll back failed gparted ext4 partition growth

I had a 12TB ext4 partition which I wanted to extend to 18TB. I've added the new disks to the RAID and after doing that I wanted to re-size the partition to occupy this new space. I started the growth ...
8
votes
1answer
9k views

Is it safe to defrag ext4 file system using e4defrag?

My file system partition is 90GB, and now 75% of the space is free after removing 53GB of recovered files using photorec from my home directory. I just want to know, is it safe to defrag the whole ...
1
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0answers
48 views

I don't understand the behavior of e2fsck

I've got a USB drive that's 1TB in size and has a bunch of media files on it. It originally had an NTFS partition, but I'm moving to Ubuntu Server 14 so I wanted to convert it to an ext4 drive. I use ...
1
vote
1answer
113 views

Recover deleted Windows Partitions after formatting it as ext4 for Ubuntu installation [closed]

I just did a mistake by reformatting the whole Hard-Drive as Ext4 when trying to install Ubuntu on the PC along with my Windows 8. However, in the Ubuntu installation process, I reformatted the whole ...
3
votes
3answers
77 views

Formatting and Partitioning SSD Help?

So I just installed Ubuntu 14.04 LTS on my netbook and was going through the things to do to optimize my SSD (https://sites.google.com/site/easylinuxtipsproject/ssd) Steps 5 and 6 tell me to partition ...
0
votes
1answer
15 views

Retrieve data from a FreeSpace volume [previously ext4 volume]

Morning, Afternoon, Evening, any thing you wish. I'm using an HP-ProBook 4540S 750 Gb HDD 4 Gb of memory Intel Core i3-3110M CPU 2.40GHz x 4 I'm a software developper,so I use to install 2 Ubuntu ...
0
votes
1answer
37 views

Copying files to external HD formatted to ext4

I have bought an external HD, transcend 2TB 2.5 and formatted it from FAT32 to ext4 since I work most of the time with ubuntu. Now when I want to copy files from my computer to the device I get the ...
7
votes
3answers
41 views

Why do ext2 and successors not need defragmentation?

The ext2/ext3/ext4 filesystem family does not need defragmentation. What underlying design help this filesystem in not getting fragmented?
2
votes
0answers
216 views

orphaned inodes on root file system (ext4); persistent problem

On my trusty systems (VMs under vmWare, desktops, and laptops), we have the following issue. The root file system seems to have inodes that are never marked as "free". After a month of a working ...
0
votes
0answers
89 views

EXT4 - jbd2/dm-1-8 - lazy initialization

I am running an operation that requires a lot of disk IO. It was going extremely quickly on my 500GB SSD until jbd2/dm-1-8 appeared in my iotop and is now permanently at 95-99%. From reading online, ...
1
vote
0answers
25 views

Is ext4 position independent and movable?

Does the data in an ext4 filesystem refer to absolute positions on the disk, or is it all relative to the start of the specific partition? I want to know this because I want to move an ext4 ...
-1
votes
1answer
33 views

is source code for bash sufficient, when I want source code of ext4?

when I want to know the source code of ext4-filesystem (mkfs.ext4) - is it then sufficient to download the source code for bash ? - or do I need else source-codes after I did : sudo apt-get ...
4
votes
2answers
7k views

df reports an ext4 partition is full, but there is no data

I recently received a warning, that my home-partition is full. It is an Ext4-Partition mounted on /home, /dev/sda is a 240 GB SSD: hannes@XFLR6 ~> df -h Filesystem Size Used Avail Use% ...
1
vote
1answer
388 views

Lost extended partition after installing windows

I was using Ubuntu 13.04 and the hard disk was partitioned as follows: Primary Ext4 (250GB) Linux Extended (250GB) and Ext3 or Ext4 logical partition Linux Swap (4GB) I have installed Windows 7, ...
0
votes
1answer
176 views

Is there anything that ext4. btrfs, or F2FS can do for a usb3.0 thumb drive that fat does not do? [closed]

I don't particularly care about cross platform. I have a thumb drive, and what to know if there is anything to gain from formatting it to ext4, btrfs, or f2fs. Thanks
2
votes
1answer
1k views

very high IOWait + extremely slow hdparm -tT

I have been running 12.04 on my Fujitsu Siemens Lifebook E751 for almost a year without any problems, and then several days ago I noticed a very high CPU IOwait that makes the system poorly responsive ...