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Need help on Technical issue

wonderguy Avatar
banned8y, 5m agoPosted 8 years, 5 months ago
Can someone please let me know as to how can we downgrade the operating system (currently running 64-bit) to a normal 32-bit software please

The machine in question is
Lenovo Thinkpad R61 C2D T7300 1GB 120GB DVDRW BT 14.1 Vista Bus NA111UK
wonderguy Avatar
banned8y, 5m agoPosted 8 years, 5 months ago
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#1
format and re-install OS.
banned#2
Alfonse
format and re-install OS.


You sure that would work, as when you reinstall OS on 64 bit I thought you can only reinstall a 64 bit version ?
#3
32-bit and 64-bit OSes both work on a 64-bit machine. Why are you needing to change to a 32-bit version (I'm guessing your using Vista?)
#4
you dont have to run 64-bit os on a 64-bit machine, indeed i would think most people are still running 32-bit for better compatiblity (or not knowing any better!). 64-bit [windows] does mean you can throw a boot load of ram at the machine (abnd it can actually use it ;-)) whereas 32bit is limited to just over 3gb...
1 Like #5
dt_matthews
you dont have to run 64-bit os on a 64-bit machine, indeed i would think most people are still running 32-bit for better compatiblity (or not knowing any better!). 64-bit [windows] does mean you can throw a boot load of ram at the machine (abnd it can actually use it ;-)) whereas 32bit is limited to just over 3gb...


It's not just compatibility that makes 32bit better than 64bit. 32bit tends to perform faster (tighter exe's being the main reason) and 32bit has a much lower memory overhead than 64bit - so much so, in fact, that apps running in either native or emulated 64bit on a 64bit OS tend to consume around 20-25% more memory than the 32bit equivelents on a 32bit OS. Mathematically, this means that the amount of data that a 32bit OS and a 64bit OS both with 4GB of RAM installed can access is slightly greater on a 32bit OS. Under the 32bit OS, you lose around 768MB virtual address space and other memory, whereas under 64bit OS, while all the memory in the system can be accessed, it's in such an inefficient manner that you're effectively losing ~900MB to memory overheads. So unless you're using apps that need more than 3GB of memory to function properly, there's very little point using a 64bit OS.

Me, by the way, I use Vista Ultimate 64 on my main desktop system (6GB), and Server 2008 32 on my livingroom system (2GB). All is good.
#6
You cannot downgrade as such, as has been said, you will need to wipe the disk and reinstall Windows 32bit.

To do this you will need a Windows 32 bit CD with valid license.

You will also need the Thinkpad drivers for the version of Windows you install (if you dont install these drivers certain components on the laptop will not work).

Note that you will LOSE any applications or programs that IBM installed on top of Windows 64 bit when you do a re-install of 32 bit Windows.

You could phone the IBM Thinkpad support people and see if they will sell you a recovery CD for 32 bit Windows. That will include all the drivers and applications.
banned#7
jah128
32-bit and 64-bit OSes both work on a 64-bit machine. Why are you needing to change to a 32-bit version (I'm guessing your using Vista?)


Yep it is a Vista Business, my client needs to downgrade that to 32-bit version, I have spoken wtih Lenovo they are saying it can be done, but they dont seem to have a clue as to exactly how lollzzz
#8
As alfonse & guilbert say you will need a 32-bit media and license then, and its a case of reformat and reinstall, the relevant drivers are probably available on the Lenova website.
banned#9
Yep, just found ther drivers, guys you are simply brilliant so thanks for that

Funny enough Lenovo has not been able to come back to me with ref to what liscence CD will I require to carry out this downgrade any manf numbers or prices/links please
#10
find a computer savvy friend

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