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Re: USB Install Fails, Complains about CD-ROM




Hi Kent,

After doing the cp or dd to write the .iso to the USB, do you do a “sync” before you eject it?  Writing to a USB stick can seem to go quite fast, but that’s because of buffering.  Often it takes quite a while (a  minute or more for a very big write on a machine with plenty of RAM) to clear the buffers and write thru to permanent media.

Just a thought,
Rick

PS:  Here’s what I use to write a .iso file to a USB stick:
    dd if=/debian-live-9.4.0-amd64-mate.iso of=/dev/sdc bs=1M conv=fsync status=progress
    sync
    eject /dev/sdc
Hope it helps!


On May 11, 2018, at 9:34 AM, Robert Menes <viewtiful.icchan@xxxxxxxxx> wrote:

> Hi Kent,
> 
> It's much easier to write the image to the USB stick using the dd command instead:
> 
> # dd if=debian-9.4.0-amd64-xfce-CD-1.iso of=/dev/sdc bs=1M
> 
> This should give you a working install stick.
> 
> --Robert
> 
> 
> On Fri, May 11, 2018, 12:12 Kent West <westk@xxxxxxx> wrote:
> I have a Dell Latitude E7250 laptop. I'm trying to install Debian to it using a USB stick.
> 
> I've tried both of these .ISOs:
> 
> debian-9.4.0-amd64-xfce-CD-1.iso
> debian-buster-DI-alpha2-amd64-xfce-CD-1.iso
> 
> I used my desktop Debian box to download these via Firefox from https://www.debian.org/CD/http-ftp/
> 
> I inserted a USB stick, and ran:
> 
> # sudo cp debian-9.4.0-amd64-xfce-CD-1.iso /dev/sdc
> 
> as per the instructions at https://www.debian.org/CD/faq/#write-usb
> 
> I then ejected the USB stick from my desktop Debian box, and inserted it into the laptop, and then booted the laptop to the USB stick.
> 
> The graphical install does not seem to recognize the trackpad (which is recognized in the laptop's EFI firmware settings, so I know it works), but that's a minor issue, as I can tinker with that later, and just use the keyboard to install for now.
> 
> The real problem is that after going through the first three or four screens, the install halts, complaining about not being able to read the CD-ROM.
> 
> Googling the issue suggested a couple of possible fixes, but I've had no success yet.
> 
> Any help?
> 
> Thanks!
> 
> 
> 
> -- 
> Kent West                    <")))>< 
> Westing Peacefully - http://kentwest.blogspot.com