General :: Ext2 Or Ext4 For Bootable USB Flash-drive?
Jan 26, 2011
I want to install Ubuntu to a USB Flash drive (so I have my Desktop everywhere and can customize it as I want). I'm still choosing what's the best filesystem for the USB; Ext2 with no journaling or Ext4 with journaling but performance increase? I know that journaling will probably reduce the life of the USB flash drive dramatically, so is Ext2 the obvious choice? Or is it a bad idea to install Linux (Ubuntu probably) on a USB Flash drive? I tried running a live CD from the USB drive, but it wasn't very customizable - which is the point of carrying my OS with me.
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Apr 23, 2010
I got a problem booting ubuntu 10.4 RC but i solved it by replacing root partirion uuid in grub boot menu then I disapled totally uuid passing to linux from /etc/default/grub . but something else i noticed why grub choosed insmod=ext2 why not ext4 specially I use now ext4 .I tried by editing the grub boot menu replacing "insmod=ext2" by "insmod=ext4" it booted and the three lines error during booting that i used to see them science ubuntu 9.10 totally disappeared . really I dont understand can anybody explane for me.and if what i did was right ,can anybody tell me how to make grub always and permenantly detect ext4 as ext4 not as ext2.
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May 25, 2010
It seems that the canonical instructions for making a bootable USB flash drive that runs memtest are at:
[URL]
However, after following them to a T, I boot up the new machine and get:
"could not find kernel image: linux"
Do I need to set up a lilo.conf first?
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Jan 28, 2011
I would like to boot Ubuntu 8.04 i386 from my USB flash drive. [URL] I took following steps:
1) made sure that usb_storage.ko kernel module is loaded
Code:
root@martin-desktop:~# lsmod | grep -i storage
usb_storage 39585 1
root@martin-desktop:~#
2) inserted USB flash drive
Code:
root@martin-desktop:~# tail -n0 -f /var/log/messages
Jan 29 01:43:23 martin-desktop kernel: [440650.637531] usb 2-2: new high speed USB device using ehci_hcd and address 8
Jan 29 01:43:23 martin-desktop kernel: [440650.776107] usb 2-2: configuration #1 chosen from 1 choice
[code].....
When I set "USB flash drive" as a first bootable device in BIOS, I get SYSLINUX "boot:" prompt and it loads both "vmlinuz" and "initrd.gz", but finally I end up in BusyBox prompt and following message:
Quote:
"Check root= bootarg cat /proc/cmdline or missing modules, devices: cat /proc/modules ls /dev ALERT! does not exist. Dropping to a shell!"
Last boot message which I see is "Attached scsi generic sg2 type 0".what might cause such behavior? Did I miss anything while preparing USB flash drive?
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Jun 30, 2011
I have an Intel Core2 Duo system that I want to upgrade from Fedora 12 to Fedora 14. I have downloaded the DVD iso for Fedora 14, however, I do not want to burn a DVD for installation, and would like to be able to perform the upgrade from a USB flash drive. Where can I find information that will explain how to make a bootable flash drive that can install Fedora 14?
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Apr 18, 2011
I'm afraid I am going to expose my age here.
I remember being able to format a 3.5 inch floppy using MS DOS. The command was format a:/s
("a" was the drive letter and the "/s" was to add the bootable system file.)
HOW can I do that in LINUX, specially Debian 6.01 (my current version) I googled it and found a bunch of sites all offering answers.
NONE worked for me, I saw an option in a Slackware installation with a "make bootable USB stick option".
(It can be used as a rescue USB Stick also) We don't have that in Debian. How can I do that with my current Debian install?
I have several Debian USB installs on flash drives, They work great and give the user an opportunity to run and experience Debian with modifying their set-up. I am trying to set-up one that will NOT only boot and work as a live install, but will also allow me to install on the host machine right from the working USB Flash drive, if I choose to do so.
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Feb 26, 2010
I'm just interested if there does exist any utility for creating bootable flash drives? I mean, if I could make somehow LiveCD with KDE desktop on openSUSE? I used Ubuntu and it had it's own utility with nice GUI, it just needed any bootable .ISO file or bootable CD/DVD and it created LiveCD on USB flash drive. So is there any chance to find something similar?
I work in a computer service center and it'll be very helpful (I think) to have bootable USB Flash dive with operating system to log into dead operating system partitions. Of course I have Windows LiveCD, but it has as much bugs as it's parent big brother.Oh, I forget to post my operating system versio. I'm using openSUSE 11.2 x64 with KDE version 4.3.5
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Sep 7, 2010
I have a USB drive of 4 GB and I want to make the drive as bootable. I used the command /sbin/mkbootdisk --device /dev/sdb1 "kernal version" ( sdb1 is my pen drive).When i ran this cmd,it gave me an error saying not enough space to write.
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Jan 14, 2010
I've looked all over the place for the utility that will create a bootable flash drive. Can anybody tell me what the name of it is?
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Apr 29, 2010
how to boot Ubuntu from USB flash drive that is formatted ext4?That is, making a portable ubuntu. But not merely a LiveUSB created using the 'Universal USB Installer' or 'UNetbootin' because the LiveUSBs created using these applications are formatted in FAT32 and uses a persistent partition just to save the changes and files.If I have your attention, what we want to achieve is a portable and bootable Ubuntu in a flash drive that is formatted in ext4.
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May 19, 2015
I created a bootable Debian installer on my USB flash drive. The Debian Installation Guide advises;
The hybrid image on the stick does not occupy all the storage space, so it may be worth considering using the free space to hold firmware files or packages or any other files of your choice. This could be useful if you have only one stick or just want to keep everything you need on one device. Create a second, FAT partition on the stick, mount the partition and copy or unpack the firmware onto it.
I want to put non free firmware packages on the stick but when I try to create a FAT partition in the free space using Disk Utility I get the following error;
Error creating partition: helper exited with exit code 1: In part_add_partition: device_file=/dev/sdb, start=661837824, size=7507093504, type=
Entering MS-DOS parser (offset=0, size=8168931328)
MSDOS_MAGIC found
looking at part 0 (offset 0, size 657457152, type 0x00)
new part entry
[Code] ....
I formatted the drive to clear it, created a new FAT partition and copied the Debian.iso to it again. When I tried again to create a partition in the free space the same error occurred.
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Jul 29, 2010
I am thinking of using flash drives to boot linux image files instead of iso files. I remember reading in the past that booting off USB flash drives were sometimes problematic -- and I don't know if they're still are. I want to know from your personal experience what type and brand of flash drive has work for you in creating a bootable flash image.
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Nov 13, 2010
I've a flash drive that it's partitions formatted as fat32, ex4 and encrypted ext4. It works fine on the system that I've formatted it on, but when I try to use it on my other Linux distributions I get these problems:
* ext4 partition accessible by root only.
* after entering my pass-phrase I get
Code: /dev/mapper/udisks-luks-uuid-***** uid1000 is mounted What I'm asking for is a way to create the ext4 file system without being attached to some UID and to be accessible by any user.
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Apr 30, 2010
I run an upgrade and an update on a lucid lynx beta 2. --- got no problems. but about the filesystems i have some questions because it seems for me that at every system boot the system will run an fsck. somtimes it's shown up, somtimes not. but in /var/log/messages and in syslog
I have always following messages ( occured in beta 2 too ).
But first before i continue - here my disk layout:
And here my filesystem types:
This is my problem because those values are seems to be static ! ( note: this partiton is mounted but not in use ) and last not least: the drive is an external usb scsi disk. but on the other side lucid lynx is running fine on my box.
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Mar 23, 2010
I'm on Slackware-current and I've got a /dev/sda1 (the root partition) formatted as ext4. The output of /etc/fstab is:
Code:
/dev/sda2 swap swap defaults 0 0
/dev/sda1 / ext4 defaults 1 1
[Code]....
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Aug 5, 2010
I wish to create a bootable disk for my existing grub legacy. I do not have a floppy drive. Could this be done on a CD-RW or flash drive?
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Oct 31, 2010
I have a usb flash drive and according to sources I found out after the fact that I should have used ext2 instead of ext4 due to the extra write operations.
Is it possible to convert the ext4 root partition to ext2 or do I need to backup, reformat, and restore?
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Mar 27, 2010
I have dual boot system..i.e, windows XP and ubuntu 9.10(insatlled side by side). when i try to boot ubuntu, Im gettin sh:grub > prompt
[Code]...
I am getting something like this.. root mount file system failed.. ext2 ext3 ext4 ....... kernel panic message and hanged at kenelthreadhelpper+ what can i do.. I cant reinstall ubuntu again.. Because I have installed nany application there..
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May 2, 2010
start getting Linux up and running. Like a lot of people, I chose an older computer I could fuss with, a 500mhz 256meg ram machine, and decided to install Puppy on a spare 40meg hard drive I have, as my bios does not boot from usb...I think...
Anyway, I have found that my bios does not recognize the hard drive when formatted to ext2! I have taken the drive and formatted it back to ntfs, and my bios recognizes it, and then back again to ext2, and nope, it's not there, thus I am still booting puppy from the cd...sigh...
Is my bios so out of date that I'm just out of luck? Is there anyway to check this?
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Mar 27, 2010
i am not able to mount a pen drive (which is formatted in ext2 format) with directory permission drwxrwxrwx and file permission as -rw-rw-rw.
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Mar 18, 2011
I have a Linux application(ProMAX 5000) running in a virtual Machine on my windows OS. I am using an external Hard drive of 250G in ext2 file system as my device for large data read, write & execute file system. I have already mounted the device from /etc/fstab. But i want my application to access this device as a Primary data storage device OR Secondary storage device. What command will i invoke to partition this 250G drive as my primary or secondary storage device.
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Jun 16, 2011
Making a live CD using tools such as livecd-creator seems like a good solution to create a bootable read-only image to install on Compact Flash. My goal is to prevent failure due to write cycle limits of Compact Flash memory. A secondary goal is to have the live CD available for troubleshooting. However, Usenet postings indicate challenges in making the live CD image on CF bootable. Has anyone succeeded in doing this?
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Oct 20, 2010
I need to make a bootable USB stick.
1) How to format it with ext3
2) How to make a master boot record
3) How to create a files system
4) How to put syslinux, syslinux.cfg and a real kernel on the stick
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May 4, 2011
I have never worked with Linux before but as part of my new job I need to format and install a program on a compact flash card. I have followed our procedure to the T but when i install the card I get a No bootable partition error. Here is what I'm doing. I go into Gnome terminal and change to my directory to "cd dcmsetupdir" (this may not be important but I want to give as much info as I can. Then I type "sudo ./format_cf". once this is complete (no errors detected), I type in "sudo ./install_cf" this seems to install correctly but when I boot up the unit with the card in I get the no bootable partition error.
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Aug 24, 2011
I have a bootable Linux compact flash card and want to copy it to an SD card. What would be the easiest way to do this?
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Jul 26, 2011
copy a compact flash card with a form of Linux on it (Found out it was custom version based on Fedora Core 3). The flaky USB card reader seems to have hosed the flash card, it shows up with unknown volume after ejecting the card and reinserting it. My troubleshooting: I have Ubuntu on a flash drive that I used to start all this to read the flash card.
- I tried Disk Utility to reformat the card as Master Boot Record and the volume as ext3 with flag set to Bootable and copied the files using cp in command line.
- I tried ISO Master & mkisofs to make an ISO that the USB thumb drive tools can use, but it wouldn't copy all the files. Looks like symbolic links either were ignored or couldn't find the source file with -f.
- I learned that I might need a boot partition with a boot image, which I think I have in initrd-2.6.14.7img, but I don't know how to do that. Do I also need a swap partition?
My updated goal: using the files from the flash card, make a bootable compact flash card with Fedora Core 3.
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Jul 6, 2009
I am noticing RHEL 5.4 is in beta. Does anyone know what 5.4's plans are for ext4? Is it still going to be a non-bootable addon? Or, will GRUB now boot off it?
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Mar 23, 2011
If I dd copy a bootable usb drive to an iso will the iso be bootable?
I haven't tried it yet, but i'm going to. Heres the situation and tell me if I'm crazy.
I have several bootable CDs I use at work to do different things, so I went ahead and made a multi-boot usb stick with the isos on them and everything is golden. When i need something else, I am able to slap the ISO on the usb stick, edit the menu.lst and I'm good to go.
The problem is, for some of our equipment I have a bootable USB stick that I have to use. I tried copying the files on the bootable USB to my multi-boot usb and setup grub to boot it (which admittedly I'm no expert at), but have had no luck.
So now I'm thinking, I'll use dd to copy the bootable USB stick to an iso (using bs=2048) and then do my normal setup with an ISO and maybe it will work.
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Apr 20, 2010
Is there any possibility to move my already installed ubuntu linux to the usb flash and make it bootable. So that it would boot on the other machine?I have an installed ubuntu karmic linux installed on my machine. I want to make it portable, to move it with all installed packages and tuned software to a usb-flash drive.
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Jul 10, 2011
I have a linux ubuntu pc with superuser access, and a windows xp pc with no administrator access so I cannot make use of any formatting tool in that.
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