Have Toshiba Tecra 64-bit 500gb disk 4gb ram running Windows 7 professional it has Intel core i5 processor.
I downloaded iso file of DVD LinuxMint Rebecca Cinnamon to DVD.
When I restart the system with the DVD inserted it immediately opens in Windows 7.
I could not follow the instructions to "disable secure boot and (u)efi".
Have partitioned the disk to allocate 100 gb to Linux in E:
First of all I really would like to run Live DVD and then later on to install it permanently it the E: partition.
Can I just simply copy the iso file into disk E:
Help from anyone is greatly appreciated.
Best regards to all of you.

That will happen if you have not set the boot priority in the BIOS to boot the DVD drive before the hard drive. Did you change this setting?

Do you actually have an option for UEFI? It may not exist, depends upon the age of the computer hardware so it may not be relevant.

That might work as long as you did not format it with a windows filesystem such as ntfs. That won't work. Might be better just to leave unallocated space. Also, Linux doesn't use the drive/partition naming scheme used on windows so you won't see an "E" drive which would actually be a partition.


You can but it won't work. A windows bootloader is not going to boot a Linux iso file. You need to burn the iso file as an image to a DVD or use software created specifically for the purpose of putting a Linux Live CD on a flash drive. Pendrivelinus and unetbootin being two options.

Check the options on boot. You should see a message on screen immediately on booting telling you which key you need to tap to "enter setup". There you should be some boot options. This varies a lot between manufacturer. If you got a manual with the Toshiba, it would be a good source to check. You might also be able to find it online.

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Welcome to LinuxQuestions.

Or if you did not burn the ISO file as an image or if you extracted the files from the image then burned to disk. If you examine the contents of the DVD and all you see is the ISO file then the disc was not burned correctly. I agree that it is best to leave unallocated space. Typically the installer will automatically create more then 1 partition.

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Thank you michaelk and yancek for your very helpful replies. I had been working overtime so had little time to implement your suggestions but will do so this coming weekend. I do appreciate all your very prompt help. I think my main problem was not to have burned the DVD correctly. bye for now.
R.

Again my friends I am having trouble,
Have Toshiba Tecra 64-bit 500gb disk 4gb ram running Windows 7 professional it has Intel core i5 processor.
I burned iso file of DVD LinuxMint Rebecca Cinnamon to DVD.
When I restart the system with the DVD inserted it immediately opens in Windows 7.
Then I pressed F1 to change the boot order to USB ODD.
Then I re-started several times to no avail.
When I press F1 to select the boot device it only gives me the Windows 7 option.
I know the disk is good because I checked the files it should contain and they are there.
Help from anyone is greatly appreciated.
Best regards to all of you.