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Burning an ISO 9660 cdrom to bootable USB.
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dartleader
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PostPosted: Sun Apr 26, 2020 5:49 pm    Post subject: Burning an ISO 9660 cdrom to bootable USB. Reply with quote

Hello everyone,

I am reinstalling Gentoo and looking to dual boot with Windows in order to streamline gaming with friends. I am trying to create a bootable USB from the Windows 10 iso which I have downloaded from microsoft's official site but when I boot the computer it does not boot from the USB. It just hangs at a black screen for a few seconds before dumping me into my BIOS.

Upon reading some tutorials online, it seems I need to use isohybrid to convert the 9660 ISO to a hybridized .iso; however, attempting to run isohybrid on the downloaded 9660 iso image results in a "unexpected boot catalogue parameters" error. I am unable to find a solution to this online. Does anyone have any suggestions?

EDIT: I have also tried converting the 9660 ISO using mkisofs and that does not boot either.
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Banana
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PostPosted: Sun Apr 26, 2020 7:36 pm    Post subject: Reply with quote

So you do have problems creating a booting USB stick from windows?

have a look here: https://wiki.gentoo.org/wiki/LiveUSB/Guide
There is a section which mentions two solitions how to create the gentoo usb bootable stick. Tried them both in the past and had no problems
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dartleader
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PostPosted: Sun Apr 26, 2020 11:36 pm    Post subject: Reply with quote

Hi Banana,

Thanks again for your time. I apologize, I don't think I've defined the problem well as you've gotten my situation exactly backwards. I'll spend some more time describing my situation:

I have a desktop computer which I would like to dual boot with Gentoo and Windows 10. It currently has no operating system as I have wipefs'd and dd'd its drives with /dev/urandom in preparation for encryption.

Available to me to create the install media are two laptops, one laptop is running Gentoo, the other is running Arch Linux. I have not had any luck creating a bootable USB for windows installation on either one, as the .iso available at the microsoft website is a ISO 9660 file which from my research appears to be strictly for optical media and is not recognized by the desktop computer's BIOS as a bootable USB.

I have followed the tutorial which you have graciously provided, but I encounter an error at:
Code:

mount -o loop,ro -t iso9660 /path/to/isofile.iso /mnt/cdrom


Which states that the operation is not permitted.

I have also attempted to change the filetype using mkisofs and isohybrid to a bootable hybrid iso, but have not had any luck.
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Banana
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PostPosted: Mon Apr 27, 2020 8:53 am    Post subject: Reply with quote

Thx for the explanation.

- So you need to get the ISO from MS Website.
- Then you need an USB stick wich is large enough (minimum is 8GB)
- Format the USB stick as exFat and MBR. This should be no problem with gparted
- Mount the iso image (more info can be found here: https://forums.gentoo.org/viewtopic-t-930028-start-0.html)
- use https://sourceforge.net/projects/unetbootin/files/UNetbootin/ to copy over the files from the iso image

also found an old topic: https://forums.gentoo.org/viewtopic-t-1038210-start-0.html
aaaand found there is an wiki topic about this: https://wiki.gentoo.org/wiki/UNetbootin#Windows_7_live_USB
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fturco
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PostPosted: Mon Apr 27, 2020 9:26 am    Post subject: Reply with quote

dartleader wrote:
Available to me to create the install media are two laptops, one laptop is running Gentoo, the other is running Arch Linux. I have not had any luck creating a bootable USB for windows installation on either one, as the .iso available at the microsoft website is a ISO 9660 file which from my research appears to be strictly for optical media and is not recognized by the desktop computer's BIOS as a bootable USB.


You may try sys-boot/woeusb.
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