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[3540] Used Space Info & Recovery Partition

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[3540] Used Space Info & Recovery Partition

Postby fox river » Sat Oct 24, 2009 11:06 am

I had just installed Windows 7 over my pre-installed Windows Vista Home Premium yesterday.

I found some facts that I don't have the explanation.

1) Used space on disk C.
I don't know why, I got different result if I check the space used on this drive, by right click on C (will show the pie chart) and by go into drive C, CTRL-A and then properties. The difference is about 15 GB !!!
Note : I have already set the explorer to view hidden files.

2) I found a "Recovery Partition" on my disk. It's about 10 GB.
Should I remove it (since I've created two recovery DVDs) ? and how to remove it (I couldn't do it with Disk Management) ?

Thanks ! :roll:
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Re: [3540] Used Space Info & Recovery Partition

Postby aspettl » Sun Oct 25, 2009 7:41 pm

There may be system files which aren't shown even in this case, e. g. the swap and hibernation file. I suppose it's also possible that you don't have sufficient rights to get the size of each file in subdirectories - then they will be ignored.
And of course there the internal filesystem data (MFT, journal, ...) which can't be seen ;-)

2) I found a "Recovery Partition" on my disk. It's about 10 GB.

I always had a real CD/DVD, no recovery partition, so I can't really say - but I'd use a Linux Live CD to have a look at the contents of the partition. You can delete the partition with e. g. a GParted Live CD.
But backup your data in every case. If the recovery partition is the first (Windows partition the second), maybe Windows won't start after destroying the first one - I never tried it...

Regards
Aaron
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Re: [3540] Used Space Info & Recovery Partition

Postby fox river » Sun Oct 25, 2009 8:13 pm

If the recovery partition is the first (Windows partition the second), maybe Windows won't start after destroying the first one - I never tried it...

This is exactly what I am afraid of removing it. It is the first partition before the windows partition. Any idea?
Anyway thanks for the reply!
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Re: [3540] Used Space Info & Recovery Partition

Postby hikaru » Mon Oct 26, 2009 10:08 am

fox river wrote:1) Used space on disk C.
I don't know why, I got different result if I check the space used on this drive, by right click on C (will show the pie chart) and by go into drive C, CTRL-A and then properties. The difference is about 15 GB !!!
Note : I have already set the explorer to view hidden files.
Most likely this is partially due to the clustering of your file system. If you have clusters of 4kB (common standard value on NTFS), and you store a file with a size of 3kB, it will use an entire cluster, and therefore block 4kB of memory. No other file can be written to that cluster, even if it has a size of only 0.5kB. This file will block another cluster of 4kB. A 5kB file will block two clusters. If you have a look at the properties of the three files, you will see that they have a cumulated file size of 8.5kB, but due to the clustering they will block 16kB.
The more small files you have, the higher will be the difference between cumulated file size and file system usage.

fox river wrote:2) I found a "Recovery Partition" on my disk. It's about 10 GB.
Should I remove it (since I've created two recovery DVDs) ? and how to remove it (I couldn't do it with Disk Management) ?
As far as I remember, the system you have installed will still work even if you remove the recovery partition. But the recovery won't work anymore because the MBR has been changed. But I can't tell this for sure.
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