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Windows 7 Format before install vs. Next (No format before install)

post #1 of 6
Thread Starter 
I know when you go to set up your partitions and such, it lets you either format the hdd before installing or go straight into installing by clicking next.

Does this create a difference?
    
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post #2 of 6
Hey again
The only difference would be that you would have to format the drive once you install Windows. Instead of formatting it during the install.
I guess you could consider that formatting it after the installation gives you more formatting options?
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post #3 of 6
Formatting before installing just lets you create new partition(s) and resets the drive alignment (if it was altered).

If there is a partition that already contains a Windows installation, and you do not format and create a new partition before installing, it will dump all the old OS files into a folder called 'windows.old' and take up a bunch of space.

If you do not format the drive, I believe, but don't quote me on this, any other partitions with data on them will remain untouched (if not marked as active). Always, always, always back that stuff up anyway.
Edited by DaveG - 8/8/11 at 7:30pm
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post #4 of 6
Quote:
Originally Posted by Cipher View Post
Hey again
The only difference would be that you would have to format the drive once you install Windows. Instead of formatting it during the install.
I guess you could consider that formatting it after the installation gives you more formatting options?
how would you format the hdd after you install the os? that would just wipe the drive and delete the os.

if the hdd is brand new, you will need to create a partition and format it. if its an old hdd with files still on it:
Quote:
If you don't format your hard disk during installation, data files are saved to a Windows.old folder on the partition you installed Windows 7 on. However, you should still back up your files. If you have data files that are encrypted, you might not be able to access them after installing Windows 7. If you've backed up your data files and then restored them after installing Windows 7, you can delete the Windows.old folder.
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post #5 of 6
If you are starting with a blank drive with no existing partitions, the 'install now' setting partitions a 100mb boot partition and the rest of the drive in to a Local Disk partition. It will be formatted in the Windows 7 NTFS format.

If you go to the advanced options and set up your own partitions, there will be a difference in the drive partitions depending on how you partition them. However, if you try and partition the entire drive, Windows will still create the 100mb boot partition - essentially, this produces an identical result to the 'install now' option.

In both cases, you must format the drive to Windows 7 NTFS. This occurs automatically without your intervention.
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post #6 of 6
Quote:
Originally Posted by travesty View Post
how would you format the hdd after you install the os? that would just wipe the drive and delete the os.
I was referring to the partitions or hdd's other than the drive Windows is installed on too.

EDIT:
My bad, I misread the OP
Edited by Cipher - 8/8/11 at 8:06pm
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