145. How to change drive letters

To change drive letters (useful if you have two drives and have partitioned the boot drive, but the secondary drive shows up as "D")

Go to Start > Control Panel > Administrative Tools > Computer Management, Disk Management, then right-click the partition whose name you want to change (click in the white area just below the word "Volume") and select "change drive letter and paths."
From here you can add, remove or change drive letters and paths to the partition.

125. Associate an icon with a drive

To set the icon of any drive (hard disk, cd rom or anything else) with a letter (C:\ etc.), run REGEDIT (Start -> Run -> regedit)

Navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer

If one doesn't already exist, create a new KEY called "DriveIcons". Under this key, create a new key with the letter of your drive.

I.e. C for your C:\ drive.

To change the icon for that drive, create a key inside that one called DefaultIcon and set the path of (Default) to the location of your icon

eg C\DefaultIcon\
then (Default) = D:\Documents\C Drive Icon.ico

To change the name of that drive, create a key in the drive letter one (eg C\) called DefaultLabel and set the (Default) to what you want the drive to be called.
This is useful if you want to assign a long name to the floppy drive.

91.Changing Drive Label in Explorer(Windows2000 & XP)

Normally the Explorer shows drive labels as "Compact Disk", "Removable Disk" ect.

To change the name of this label for specific drives:

1. Start Regedit
2. Go to HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / Windows / CurrentVersion / Explorer
3. Create a key called DriveIcons
4. Within DriveIcons, create another key with the drive letter you want to change (..\DriveIcons\K)
5. Create another within the drive letter key called DefaultLabel
6. Give the Default Value for this key the label you want to appear for that drive letter. (Jazz Drive etc.)
7. Restart the computer

80. Messing with Partitions

Before using Disk Administrator to make changes to the partitions, you may want to make sure you save your current configuration. To do this, click Start > Programs > Administrator tools > Disk Administrator > Partition > Configuration > Save. Insert a formatted floppy disk into your drive and click OK. You can restore the partition structure later by clicking on Partition > Configuration > Restore.

51.How to Convert a FAT Partition to NTFS

To convert a FAT partition to NTFS, perform the following steps.
Click Start, click Programs, and then click Command Prompt.
In Windows XP, click Start, and then click Run.
At the command prompt, type CONVERT [driveletter]: /FS:NTFS.Convert.exe will attempt to convert the partition to NTFS.
NOTE: Although the chance of corruption or data loss during the conversion from FAT to NTFS is minimal, it is best to perform a full backup of the data on the drive that it is to be converted prior to executing the convert command. It is also recommended to verify the integrity of the backup before proceeding, as well as to run RDISK and update the emergency repair disk (ERD).
Convert.exe will attempt to convert the partition to NTFS.

19.Turn off the low disk space notification:

Start regedit, expand HKEY_CURRENT_USER and in
Software – Microsoft – Windows – CurrentVersion – Policies - Explorer,
and set the value of NoLowDiskSpaceChecks to DWORD = 1.
(This modification requires a logoff or reboot to work)

9.Automatically defrag drives with a new context menu item!

A new Registry import file named context_defrag.inf in Notepad (be sure to save with it with the Save as type set to All Files and not Text Documents) and place the following text inside:

; context_defrag.INF
; Adds Defrag to the right click context menu in Windows XP

[version]
signature="$CHICAGO$"
[DefaultInstall]
AddReg=AddMe

[AddMe]
HKCR,"Drive\Shell\Defrag\command",,,"DEFRAG.EXE %1"

Then, right-click and choose Install. This will add a context menu to XP that allows you to automatically defrag drives, using the command line version of the built-in defragmentation utility. To use it, navigate to a drive in My Computer, right-click, and choose Defrag. A command line window will appear, and that drive will be defragged. When it's complete, the window just disappears.

UPDATE: To remove this functionality, Open regedit.exe and navigate to the following location:
HKEY_CLASSES_ROOT\Drive\shell\
Then delete the Defrag folder and close Regedit.
Then delete the Defrag folder and close Regedit.