LinuxQuestions.org
Help answer threads with 0 replies.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 05-05-2010, 06:18 PM   #1
debbie53
LQ Newbie
 
Registered: Mar 2005
Location: Connecticut, USA
Distribution: Still deciding
Posts: 13

Rep: Reputation: 0
Transferring an iso to different computer via usb device


I have two somewhat older computers, an HP laptop running Ubuntu Gutsy Gibbon and a custom desktop running Debian Lenny. They are not networked, and I do not have home internet access since I recently moved to an area where broadband is not available and I have a winmodem. I am trying to upgrade the system on the laptop, but have run into a strange problem. I have downloaded a copy of the Xubuntu Karmic Koala iso from a public wifi spot onto the laptop. The laptop does not have a CD burner, so I am attempting to transfer the image to the desktop computer via a usb device. The problem is that it will not transfer accurately. The md5sum of the iso is fine on the laptop hard drive and also after I have copied it to the usb device. I unmount the usb device from the laptop, connect it to the desktop, and copy the file to the desktop hard drive, from where I hope to burn the CD. I check the md5sum and it doesn't match. What is even stranger is that if I now check the md5sum of the iso file on the usb drive, that has also changed. The size of the file in bytes remains the same, but when I ignored the md5sum and tried to burn the CD anyway, it would not run, so something is wrong. I have tried this dozens of times with a compact flash card formatted fat16, a thumb drive formatted fat32, and another thumb drive that I reformatted ext2, all with the same result. The md5sums are always different, but always wrong. What I would like to know is, do I have defective hardware, or is something else going on? I have never had a problem transferring other, smaller files in this manner. How else can I get this iso file onto my desktop computer? Thanks to anyone who can help me figure this out.
 
Old 05-05-2010, 06:38 PM   #2
cantab
Member
 
Registered: Oct 2009
Location: England
Distribution: *buntu, Vector
Posts: 499

Rep: Reputation: 102Reputation: 102
My guess is that for whatever reason the laptop is not unmounting the usb drive properly. Have you tried the paranoid approach: copy the file to the USB drive, then shut down the laptop. Only once it's fully turned off remove the USB drive and put it in the desktop.
 
Old 05-07-2010, 04:36 PM   #3
debbie53
LQ Newbie
 
Registered: Mar 2005
Location: Connecticut, USA
Distribution: Still deciding
Posts: 13

Original Poster
Rep: Reputation: 0
No, I don't think I did try that, but I will. Thanks for the suggestion. However, I don't think that explains why the md5sum of the iso on the usb should be different from that on the desktop after I have transferred the file. Should I also shut down and restart the desktop before checking the md5?
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
turn a computer into a usb or firewire mass storage device. exodist Linux - General 13 01-17-2011 10:07 AM
Using a floppy disk to boot an iso from a usb device? Toxyn Linux - General 3 05-03-2007 02:47 PM
Booting with GRUB/LILO using a floppy form an ISO on a USB device? :s Toxyn Linux - Software 1 02-08-2007 09:49 AM
boot pc from a bootable-iso without a cd or usb-device psytroll Linux - General 1 02-23-2006 02:27 PM
What device is the USB port on the front of my Computer mattn Linux - Newbie 5 02-05-2004 09:39 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 12:04 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration