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Windows 7: How to convert my partition back to NTFS from extFS?

07 Nov 2009   #1
karthurk

W7 X64 Ultimate, OSX, Linux
 
 
How to convert my partition back to NTFS from extFS?

Hello,
I had a win7 installation, x64 and recently I installed windows XP, quit w7 for a while. I have a big problem, I have a 160GB SATA2 Maxtor HDD, I first formatted/part'ed when I had installed windows7, and now being back to my xp I cannot browse the partition, the driver letter appears but I cannot access the information, i put the drive in another computer running w7 and all the data was accessible. I tried like a ton of part. managers and no luck so far. If anyone kows

My question is how can I convert my partition back to NTFS from extFS or WinFS??

Google didn't helped me at all, it's been 2 days since I am looking for a solution to this, no result on google (or this forum or other forums for that matter) will give me a compatible partition manager/tool or I am unable to find the keywords for it.

THANKS!!


My System SpecsSystem Spec
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07 Nov 2009   #2
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

I'm a bit confused, neither extFS or WinFS are among the format options in Disk Management, so how did they get formatted in that fashion at all? If you used a partition manager or some Unix OS to format, then I would use the same to alter it.
My System SpecsSystem Spec
07 Nov 2009   #3
karthurk

W7 X64 Ultimate, OSX, Linux
 
 

Quote   Quote: Originally Posted by seekermeister View Post
I'm a bit confused, neither extFS or WinFS are among the format options in Disk Management, so how did they get formatted in that fashion at all? If you used a partition manager or some Unix OS to format, then I would use the same to alter it.
This is the problem, I formatted the drive from Administrative Tools Create new extended partition, I am not certain it was extFS or WinFS, I can hardly remember, it was like 5-6 months ago, but the problem is, if the partition IS NTFS, I must be able to recognize it as a bad NTFS partition(that's why i presumed it must some exotic fs type), not Unknown in every Partition Manager, and when put in Win7 pc, everything is recognized.
I am really confused.

I just opened my partition's first sector in a hex editor and I see that ACtually it is EXFAT!
My System SpecsSystem Spec
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07 Nov 2009   #4
karthurk

W7 X64 Ultimate, OSX, Linux
 
 

Having found the real partition type is much easier!

Here's the XP KB update from microsoft to make such partititions visible under XP

Description of the exFAT file system driver update package
My System SpecsSystem Spec
07 Nov 2009   #5
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

I know about FAT, but I hadn't heard of exFAT before. In general, it is not a good idea to use FAT, because it will cause some problems. The only time that I use FAT is on a volume that I want to accesss by both Windows and Linux. Otherwise, I can't see any good purpose in it.
My System SpecsSystem Spec
07 Nov 2009   #6
Zidane24

Windows 7 Home Premium x64 - Mac OS X 10.6.4 x64
 
 

Quote   Quote: Originally Posted by karthurk View Post
Having found the real partition type is much easier!

Here's the XP KB update from microsoft to make such partititions visible under XP

Description of the exFAT file system driver update package
You will have to backup your data and do a format->NTFS

You can't convert it
My System SpecsSystem Spec
07 Nov 2009   #7
karthurk

W7 X64 Ultimate, OSX, Linux
 
 

EXFAT is kinda like FAT64, bigger better meaner than FAT32. Anyhow, Windows 7 offered to convert it to that, now that I have installed the addon from micrososift everything is visible and moving as it should.

THANKS VERY MUCH!
My System SpecsSystem Spec
07 Nov 2009   #8
Jordus

Windows Vista Business / Windows 7 Ultimate
 
 

Exfat is Extended FAT. Its a new file system that was available in Vista and now 7.

You should be able to either format the drive back to NTFS or goto command line and type convert D: /fs:ntfs

Replace D with whatever drive letter you want to convert.
My System SpecsSystem Spec
07 Nov 2009   #9
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

When I went into Disk Management to check this out, it only had options for NTSF or FAT. Maybe there is an additional step involved if FAT is chosen...I don't know, but if there isn't, I would like to know why? What advantage is there to exFAT over NTSF?
My System SpecsSystem Spec
08 Nov 2009   #10
karthurk

W7 X64 Ultimate, OSX, Linux
 
 

The data structure is more oriented towards easy access of the content. the fs is for large hdd's, and apparently prefered by W7 .... dunno what to say
My System SpecsSystem Spec
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 How to convert my partition back to NTFS from extFS?




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