I am trying to go from 32 bit Vista to 64 bit Windows 7.
The 32 bit Vista was installed by mistake. My system can handle a 64 bit OS. Now I have finally found the time to upgrade. But the 64 bit intallation DVD can't be read from my OS. Any Advice?
Do I need to boot from that DVD drive? Will that work?
Yes, I think booting from the installation DVD would be the next logical step -- I tend to boot from media for updates rather than run from within the OS and I don't recall ever having an issue.
To change from 32 to 64-bit operating systems you need to do a clean installation, booting from the installation media and wiping your current OS (or possibly abandoning it by installing the new one in a different folder).
Best to backup your data, wipe the partitions and start again
If you are currently running a 32-bit version of Windows, you can only perform an upgrade to another 32-bit version of Windows. Similarly, if you are running a 64-bit version of Windows, you can only perform an upgrade to another 64-bit version of Windows.
If you want to move from a 32-bit version of Windows to a 64-bit version of Windows Vista or vice versa, you'll need to back up your files and then choose the Custom option during Windows Vista installation. Then, you'll need to restore your files and reinstall your programs.
FYI, I recently completed a similar upgrade on a machine where someone installed 32 bit XP on a 64 bit machine. Perhaps the following anecdote is useful - or not. You be the judge.
Feeling quite clever, and not wanting to loose the configured XP development machine, I virtualized it using VMware Converter. I then did a fresh Windows 7 install and added VMware Player. I expected the virtualized XP box could be used for on-going development while the Windows 7 development environment was setup catch-as-catch-can. Sadly, Windows Product Activation (WPA) foiled the plan. We were unable to logon to the virtualized XP Box as it was seen as probably pirated software. Perhaps there was some way around the issue but I opted instead to take the hit, and setup the Windows 7 development box.
FYI, although we were unable to log on to the virtualized XP box, I found I could map its drives and gain access to its files. This was somewhat useful as (of course) I found a few things that escaped our backup.
Hope this is of some use. Best of luck with your upgrade.
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