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  #1  
Old 16th April 2015, 01:17 AM
bturrell Offline
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Live Disk issues

So, I've been a Ubuntu user for a few years now. I was trying to download a copy of Fedora 21 just to try it out. I've attempted to create the live disk on a USB flash drive several times. When I try to load the live disk, I get the countdown screen, and then a flashing line in the upper left corner. When I tried to verify the CHECKSUM, it said "FAILED" and that there were 20 lines not configured correctly. I got that same message when I tried to download both the 64 bit and the 32 bit. Am I downloading bad versions?

I appreciate the help.

Ben
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  #2  
Old 16th April 2015, 01:57 AM
crokett Offline
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Re: Live Disk issues

how are you creating the live usb stick from the ISO? Did you verify the checksum after downloading the ISO image?

I have had this problem with USB sticks that are not bootable.
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  #3  
Old 16th April 2015, 02:07 AM
bturrell Offline
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Re: Live Disk issues

The usb that I am using is the one I used to install ubuntu, so I know it is bootable. I verified the CHECKSUM, and it told me that there were 20 lines not formatted properly. I've tried to download several times, and got the same message. I have tried to install to usb with Startup Disk Creator, and using

Code:
dd if=location/file of=dev/sdb
both got the same result.
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  #4  
Old 16th April 2015, 02:48 AM
crokett Offline
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Re: Live Disk issues

Quote:
Originally Posted by bturrell View Post
I verified the CHECKSUM, and it told me that there were 20 lines not formatted properly.
If the checksum told you that there were lines not formatted properly then why did you try to write the file to USB?

Did you verify the checksum after download and prior to writing to USB? I've had a similar problem before but it was on a corrupted ISO file.
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  #5  
Old 16th April 2015, 08:00 AM
Ahmad Samir Offline
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Re: Live Disk issues

If you get something like:
$ sha256sum -c Fedora-Workstation-21-x86_64-CHECKSUM
Fedora-Live-Workstation-x86_64-21-5.iso: OK
sha256sum: WARNING: 20 lines are improperly formatted

then this is normal; the 20 lines are actually the gpg signature of the *-CHECKSUM file.

To verify the downloaded iso, follow these instructions: https://getfedora.org/verify
To put the ISO on a USB drive follow these instructions: http://docs.fedoraproject.org/en-US/...oot-media.html

---------- Post added at 09:00 AM ---------- Previous post was at 08:59 AM ----------

If you get something like:
$ sha256sum -c Fedora-Workstation-21-x86_64-CHECKSUM
Fedora-Live-Workstation-x86_64-21-5.iso: OK
sha256sum: WARNING: 20 lines are improperly formatted

then this is normal; the 20 lines are actually the gpg signature of the *-CHECKSUM file. (The important line is the one that says OK).

To verify the downloaded iso, follow these instructions: https://getfedora.org/verify
To put the ISO on a USB drive follow these instructions: http://docs.fedoraproject.org/en-US/...oot-media.html
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  #6  
Old 16th April 2015, 12:34 PM
joncr Offline
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Re: Live Disk issues

I need to add a 'sync' to flush the buffers when I use dd:

Code:
dd if=location/file of=dev/sdb && sync
Without the sync, the prompt returns in a second or two, while the sync takes a few minutes to get everything written to the stick.

Not sure, but I think Ubuntu's Startup Disk Creator is specifically targeted at making Ubuntu images, not that I know what the difference might be.
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  #7  
Old 16th April 2015, 02:18 PM
crokett Offline
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linuxchrome
Re: Live Disk issues

the command I've always used under fedora is simply:

dd if=<filename> of=<usb device> bs=2048

and that works fine.
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  #8  
Old 17th April 2015, 02:15 AM
bturrell Offline
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linuxchrome
Re: Live Disk issues

So I tried both of the previous two methods, and got the same result. I verified the checksum and it was ok. I'm going to try another usb later to see if maybe that one went bad, for some reason.
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  #9  
Old 17th April 2015, 08:34 AM
Ahmad Samir Offline
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linuxfedorafirefox
Re: Live Disk issues

Quote:
Originally Posted by bturrell View Post
The usb that I am using is the one I used to install ubuntu, so I know it is bootable. I verified the CHECKSUM, and it told me that there were 20 lines not formatted properly. I've tried to download several times, and got the same message. I have tried to install to usb with Startup Disk Creator, and using

Code:
dd if=location/file of=dev/sdb
both got the same result.
A shot in the dark, maybe it's this typo, it should be of=/dev/sdb , (note the extra forward slash before dev/).
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  #10  
Old 17th April 2015, 03:14 PM
lsatenstein Online
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Re: Live Disk issues

Quote:
Originally Posted by bturrell View Post
So I tried both of the previous two methods, and got the same result. I verified the checksum and it was ok. I'm going to try another usb later to see if maybe that one went bad, for some reason.
Hi BT

USB handling is such that after running dd command, a lot of the data is still in the cache.

You should do a sync command or take the model below as a guide.

sudo dd if=/path_to_file/FedoraXX.iso of=/dev/sd? bs=1M && sync; sync;


I tend, from habit to always issue a double sync command, though a single one is sufficient.

I would then use the eject command for the flash drive. Some flash drives have a blinking light, when they are active, others have no lights, while a third type only show powered on.
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  #11  
Old 18th April 2015, 02:51 AM
bturrell Offline
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linuxchrome
Re: Live Disk issues

So, I finally broke down and used Unetbootin on my wife's windows computer, and it worked. Thanks for the suggestions anyway.

Ben
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