Write iso to USB drive?

Hello,
Recently I have been wondering about booting from a USB stick, and was wondering if anyone here could help. Is there any program in OS X (either pre-installed or otherwise) that would allow for the writing of an iso file to a USB stick? I apologize if this really shouldn't have been asked here, but my searching has brought up nothing, and I thought the community here may be able to help.
Thanks for your time!

Sure. Have done this before.
Open Disk Utility in the Utilities folder. Select the USB drive main entry. It will have to be prepped first. Click on the Partition tab in the DU main window. Select one partition from the drop down menu and click on the Options button. Set the partition map to MBR then click on the OK button. Set the format type to MS-DOS from the Format drop down menu, then click on the Partition button.
Now click on the Restore tab in the DU main window. Drag the USB volume (sub-entry) to the Destination field. Drag the .iso image to the Source field. Click on the Restore button.
Now I hope you understand that most distros will not boot from a USB flash drive. They generally require some special modifications to do so. You should find out in advance how that can be done for the distro you are using. Unfortunately I can't help you with that.

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Booting from iso from usb drive

I want to boot arch from iso from my thumb drive. Based on the wiki article on Grub, I've put this entry to my grub.cfg:
menuentry "Arch Linux x86_64" --class iso {
set isofile="/iso/archlinux-2014.05.01-dual.iso"
loopback loop $isofile
linux (loop)/arch/boot/x86_64/vmlinuz archisolabel=ARCH_201405 img_dev=/dev/disk/by-label/IKAROS img_loop=$isofile earlymodules=loop
initrd (loop)/arch/boot/x86_64/archiso.img
Grub seems to load the kernel fine, but the kernel then fails to mount the drive with the following message:
:: Setup a loop device from /iso/archlinux-2014.05.01-dual.iso located at device /dev/disk/by-label/IKAROS
:: Mounting '/dev/disk/by-label/IKAROS' to '/run/archiso/img_dev'
[ 9.556128] FAT-fs (sdb1): IO charset iso8859-1 not found
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
ERROR: Failed to mount '/dev/disk/by-label/IKAROS'
Falling back to interactive prompt
You can try to fix the problem manually, log out when you are finished
sh: can't acces tty: job control turned off
[rootfs /]#
I know I could dd the iso on the usb stick and probably avoid this, but I like my setup with several isos in a directory and appropriate grub entries. Does anybody know how to fix this?
Last edited by Remedan (2014-05-02 19:23:41)

elken wrote:I made it sometime last year and it has a load of ISOs on it but yes Arch was one of them. It was MultiCD sorry, not yumi. Like I said, it was a year ago. MultiCD was a piece of cake.
Well, with MultiCD I can create an image which can boot multiple isos and write it on the drive. The thing is, I want to be able to use the drive as a storage device also. So I'd like something that would allow me to have a FAT partition on the drive and boot from that.
But the core of my trouble is that the live arch doesn't seem to be able to handle the FAT partition.

Iso to usb drive tool doesn't work

whenever I try to create a bootable usb drive so I can install my Windows 7 it tells me "The selected file is not a valid ISO file. Please select a valid ISO file and try again"
its a iso, I thought it was supposed to be easy but its a pain in the ____

Hi Com,
The Windows 7 USB download tool is using a open-source code. When you select a custom ISO file, you will receive the error “The selected file is not a valid ISO file. Please Select a valid ISO file and try again”. In order to use a custom ISO file, please refer to Use the Windows 7 USB/DVD Download Tool with custom ISOs
Please note: we provide 3rd party link for references. There may be some changes without notice, Microsoft doesn't guarantee any accuracy on contacting information.
For more references:
Installing Windows 7 using usb thumb drive
Best Regards
Dale

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Create a bootable USB drive from an ISO

Hi everyone,
I want to create a bootable USB drive from e.g. a Linux ISO. On Windows, there are tools like UNetBootin (http://unetbootin.sourceforge.net/) for that. Is there s.th. similar on Mac?
Thanks in advance

Hi. The easiest way to do what you want to do is to scan it for restore, and then use the restore from disk image tool to write it to an external disk. All of this can be done with disk utility.
First you will want to drag the ISO image into the Disk Utility sidebar. Then you select the disk image (in disk utility) and click the Convert button in the top toolbar. I recommend using the "read only" image format and you'll have to add the extension .dmg to the file. When the conversion is done, the new image will appear in the sidebar. Select that image and then go to the Images menu and select Scan For Restore. You may be prompted for your administrator password. When the scan is done, connect your external disk. Then select the volume in Disk Utility (the thing with the name of your disk, not the model number), go to the Restore tab and drag the volume into the Destination field. Now you can drag the DMG disk image into the Source field and click Restore. You may want to check Erase Destination.
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Jeremy A
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http://discussions.apple.com/click.jspa?searchID=7426620&messageID=4582486
Your other problem sounds like another computer has the files open or application has the files open simultaneously. Try shutting down your Mac, and isolating your Mac from any network and try rebooting again in safe mode by holding the shift key at startup.

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Ok. More details. Apologies for the lack of them to start with.
The Case is a Vantech USB/SATA HD Dock. It has it's own power (i.e. it is not powered by the bus). The Drive in it is a Western Digital 1TB Caviar Green. It has done this on all USB ports and with any computer it has been connected to. Mac computers any way, I have connected it to a windows box at work, but not long enough for the problem to manifest it self. Unfortunately I don't have a Mac I can hook it up to directly via SATA to see if it is the enclosure. I found another SATA enclosure here at work to try it with tonight. It's not the computer going to sleep that is causing the problem. It the OS spinning down the drive.
I get this in the console log when I try and unmount the drive via the finder:
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Can't write on my usb pen drive from 2 days?!?

hi, from 2 days i can't write on my usb pen drive (Transcend JetFlash Flash 16gb with FAT32 partition)
if I do a manual mount in a console by root, I can easly a do cp command and copy files over.
if I open dolphin and mount by hal the drive, I can read but not copy files, and if I open a console and do a cp command, I have this error:
cp: cannot create regular file `/media/OZETA/ownage.png': Read-only file system
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Last edited by ozeta (2009-05-21 19:10:19)

Have you tried running dosfsck on the device? Of course, be sure that you unmount the usb drive and verify the dev file of the relevant partition.
Something like:
dosfsck /dev/sdb1 <----replace with correct dev file!!
to see what the problem is and then
dosfsck -a /dev/sdb1
Of course, I would strongly encourage you to backup all data on the drive first.
Last edited by madalu (2009-05-22 12:45:26)

I am trying to reinstall Windows on my macbook pro. I downloaded the support files and Windows 7 iso file to a USB drive. However, when I try to run the setup.exe program I get the message "this program cannot be run in DOS mode."

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Try a restart.
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Boot Camp For Lion -- USB ISO Method --"Booting from Boot Camp Assistant created USB Drive...Failed to load BOOTMGR"

Hello, has anyone had experience with dealing with this speciifc problem?
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I am using Mac OS X Lion 10.7.4. I have an ISO of Windows 7 Prof. along with an 8GB usb drive. I changed the coding in my bootcamp program to allow for the normally first invisible option that allows creation of a USB Installation program using an ISO that is normally only for computers without an optical drive.
I have that box checked, the check for new software box, and the install windows box checked. I went through the process of creating the USB, downloading the software, and partitioning the drive. Then on restart, I get the failed to load bootmgr error.
Some people have suggested using two usb drives for this. I am trying that method but it does not seem to help thus far.
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from what i understand you are trying to install win 8 pro from a "backup disk" the one that you purchased from microsoft.
this will not work, it is not an installer disk.
you need to start the process again. erase the partition you made on your hdd. in disc utility click the minus button after selecting the bootcamp partition, then manually drag the divider down fully then apply.
next, erase your usb then format it.
download win 8 iso from here;
http://getintopc.com/softwares/operating-systems/download-windows-8-pro/
it is perfectly legal to use your purchased product key in this install.
in bootcamp select the iso image you just downloaded, select your preferred partition size, check all 3 options.
you have the support software on another usb but you wont need it so it can be discarded. the install will work far better with the iso and support on the same drive.

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OK, so I have an apple superdrive hooked up to my mini (along with my Passport back up drive). I also have the discs for both 64bit and 32bit Windows along with the product key. I am still not sure what to do when faced with the options after "choose".

How to install bootable iso on a usb drive in arch

How do i install a bootable ISO on a usb drive in arch linux?
i tried Unetbootin but i cant get it to work correctly..
Please help.
Thanks!
Last edited by Rician (2011-04-02 08:36:22)

Open web browser, go to arch wiki, find search box, type in "usb install", press enter.

"Your bootable USB drive could not be created" "Boot Camp only supports 64-bit Windows installation on this platform. Please use an ISO file for 64-bit Windows installation."

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Thanks for your feedbakc Kiranjj!
I identified the reason to be that the W8 installation file didn't download completely from a Mac OS-device. I downloaded from another Win-device and the moved the installation file with a USB-stick and then everything worked diectly! But thanks anyway.

My MacBook w/ OSX 10.6.8 cannot access my external Time Machine Backup USB Drive. It says it is a Read Only drive. When I went to change permissions I found all pernissions were listed as "Custom" and I could not reset them to "Read Write". Any help!

My MacBook w/ OSX 10.6.8 cannot access my external Time Machine Backup USB Drive. It says it is a Read Only drive. When I went to change permissions I found all pernissions were listed as "Custom" and I could not reset them to "Read Write". Any help would be appreciated.

This can be done easily with ethernet.
Please follow the instructions strictly.
To make it easier I want you to do this overnight so you can turn off all your current connection to the internet.
Just go to the airport fan in to the top right and turn airport off.
Get ethernet cable and connect the laptop to the TC lan port.. ie <-> ones.
Press and hold the reset on the TC for about 10sec. until the front led flashes rapidly.
Open the airport utility.. go to manual setup and change the wireless to off. (so other people around you cannot join your network of one).
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Go to the TM and reselect the backup target disk as the TC.
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Create a new admin user and give all permissions oj your router and check if you can write to it on your Ubuntu linux machine...

Write iso to USB drive?

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