1. Open My Computer.
2. Right-click the drive you want to compress.
3. Click Properties.
4. On the General tab, select the Compress drive to save disk space check
box, and then click OK.
5. In Confirm Attribute Changes, select the option you want.

Compress drive to save disk space
[[Specifies that this NTFS drive be compressed. By default, only files in
the root directory are compressed automatically. To have Windows compress
all folders on this drive, select the Also compress subfolders check box in
the message that appears.]]

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Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In ,
News Group hunted and pecked:
Hi,

I have a single HDD with several NTFS Partitions: C: D: E: etc.

C: is my System partition - XP Home SP2.

I can compress files (i.e.. the 'Advanced' Button is available) on all
Partitions except C:

C: is NTFS as are all other Partitions - How do I get the 'Advanced'
Button back?

Any help appreciated.

Thanks,

Colin