Can you partition when...

hydroshock

Distinguished
Oct 11, 2006
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18,630
The hard drive already has stuff on it etc.? The only way I have dealt with partitioning is when first installing windows and really haven't cared to partition until now.
 

hydroshock

Distinguished
Oct 11, 2006
55
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18,630
I guess I didn't make my question very clear lol.

I haven't ever partitioned a drive.
Is it possible to do when it's already in use, or does it have to be freshly formatted?
 

4745454b

Titan
Moderator
Partition magic is supposed to be able to do this. It should allow you to make a new partition from unused space. I've never used it to do this however, so I'm not sure how well it works. YMMV.
 

Paperdoc

Polypheme
Ambassador
Do NOT partition a drive with data unless you use something like Partition Manager for the job. A Partition operation as Windows does it through Disk Manager (or during the installation of Windows) completely over-writes the existing Partition Table, leaving no trace of the old formatting structures (directories and allocation maps, etc), so you lose everything. After that you must run a Format operation to get the disk ready to accept data.

Partition Magic and some similar tools do not work this way. They will read and revise an existing Partition Table, advising what you can and cannot do, and fix up the directory etc. They even will move existing data to the right places on the disk so it is all in your existing formatted partition, before they co ahead and create and Format a new empty partition. Windows won't even try this - it will simply blunder on and assume your drive is empty and you don't want any data on it.

IMPORTANT!! Even the best software like Partition Magic can have problems. Like, a power surge comes along in the middle of their work, or the dog snags your power cord and pulls it out of the wall. ALWAYS make and test a backup of all your stuff before doing major surgery like re-partitioning.