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David Everett
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Can I partition C drive after installing Windows?

I have a 250GB SSD C drive with Windows Pro 8.1. I am thinking of getting Paragon Prartion Manager 15 to split this into a Windows and a Data partition. Is this safe? Any comments or alternative advice? Thanks.
* SSDWindows OS* Disk partitioning

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Seth Simmons

8/22/2022 - Mon
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benson mbaria

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Emmanuel Adebayo

Yes, this is safe and easy to understand.
David Everett

ASKER
OK thanks - so are you saying there is no value in using Paragon and that I can do it all just using tools provided in Windows 8.1 pro?
benson mbaria

yes
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William Peck
Ramin

Anybody has his/her experience. I have a lot of experiences with resizing C: drive  while Windows installed with Paragon HD tools and never failed, even once. I would do it with Paragon.
Emmanuel Adebayo

You have to be careful using Tools provided with Windows 8.1, this will not repartition the OS drive, it might even delete the partition. I will not use this unless you are experienced.
fred hakim

I have to agree using a 3rd party tool like paragon (free) or Minitool partition wizard or easeus partition master are  safe and free.    Using windows built in tools can work too, but they get tricky working on the boot partitions.  

I'm not so sure about partitioning a 250gb SSD.  You need to leave plenty of C drive space for future update activity which can require quite a lot in some instances.  If you have an open bay, you may want to consider adding a hard drive for it.
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Gary Case

"... You have to be careful using Tools provided with Windows 8.1, this will not repartition the OS drive " ===> WRONG.   Disk Management will absolutely let you do this.

You MAY need to use a 3rd party tool to do the re-partitioning of the drive, depending on the current state of various Windows files.   Disk Management will often NOT let you shrink the partition as much as you'd like, but it can be done very safely with a good 3rd party tool.

Do this ...

(a)  Run Disk Management  [Right-click on "This PC"; select Manage; then click on Disk Management]

(b)  It should show a "System Reserved" partition followed by your C: partition => if it's anything else, post of picture of what it shows before proceeding.

(c)  Assuming the current partitions are as I noted, right-click on the C: partition and select "Shrink Volume"    In a few seconds it will show how much it can shrink the volume ... if it's enough to do what you want, just set it to how much you want to shrink and it will do it for you.   If it won't shrink it as much as you'd like, you'll need a 3rd party tool to resize the volume.   Paragon will work fine -- although personally I'd use Boot-It BM.

(d)  If you were able to shrink it as much as you wanted, you'll now see some unallocated space -- just right-click in that and create a new volume (you can choose whatever drive letter you want from those that are available) and you're done.
nobus

i also use paragon software for this - fast and easy to use, and as said - it never failed me
Gary Case

"... Can I partition C drive after installing Windows? " ==>  Just to be semantically correct, your drive is already partitioned.   You want to CHANGE the partitions on the drive.
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rwheeler23
noxcho

Depends on what you are going to do with that C: partition. Do you want to make it smaller and create new partition of the freed space? Then - you don't need third party tool for this. Do it via Windows Disk Management.
If you want to assign additional space to C: drive by taking it from adjacent partition - then you will have to use third party tool because Windows Disk Management tools do not support this operation.
nobus

to answer the question :
>>   I am thinking of getting Paragon Prartion Manager 15 to split this into a Windows and a Data partition. Is this safe?   <<   sure - no problem
Seth Simmons

No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: benson mbaria (https:#a42077904)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

seth2740
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