Hi,
I have Mint 10 and Windows 7 on a partitioned 500Gb disk. I have just fitted a second (1Tb) drive, and have Mint 14 on a DVD ready to load. The intention is to load Mint 14, then copy files from the first drive, before deleting Mint 10 and expanding Windows to the whole of the first drive. However, I wonder if the fact that there will be a Grub bootloader on both disks at the start of the procedure will cause a conflict. Advice would be much appreciated.
John.

Having Grub on both drives should not be a problem. When installing Mint, it would be best to install the Mint 14 Grub to the mbr of the first drive where you have Mint 10 and windows. At the end of the installation, update-grub is run and you should then see on your first boot, entries for Mint 14, Mint 10 and windows. Since the drives are different sizes you should have no problem determining which is which. If you install Mint 14 Grub to the mbr of the second drive, you would have to set it to first boot priority in the BIOS to boot and that could result in the need to map drives to boot windows.

Alternatively, if you are paranoid about it, you could install the Mint 14 Grub to the mbr of the second drive and reboot to see that it was successful before install its Grub to the mbr of the first drive.

Remember to backup any time you are doing a new installation.

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Thanks Yancek. Really glad that I asked before proceeding, now! Will follow your advice.
John.