Partition Manager Software

Partition Magic - Partition Manager Software

Extend partition with one step
Resize/Move partition without data loss.
Create, delete and format partion with simple steps. Copy partition and disk to transfer data with ease. Support disk and partition size larger than 2 TB. Keep your data safe even in case of power outages or hardware failure.

To make the operating system assign a CD-ROM drive letter

If your computer has a CD-ROM drive or any form of removable media, you should be aware of potential problems caused by the way drive letters are assigned to these devices.
If you are using Windows NT, you can change drive letter assignments with PartitionMagic; otherwise, this is a function of the operating system. The operating system assigns drive letters in this order: (1) the first recognized primary partition on each hard disk, (2) all logical partitions on each hard disk, (3) any other primary partitions on each hard disk, and (4) the CD-ROM drive and any other forms of removable media.
Because the CD-ROM is one of the last drives to receive a letter, any partition you create or delete on any of your hard disks affects the drive letter assignment of your CD-ROM drive. Occasionally, the operating system may not assign a drive letter to the CD-ROM drive. If this occurs, complete the steps outlined below. If you are using Windows 95/98 and Windows 95/98 drivers for the CD-ROM:
1. From the Windows taskbar, click Start > Settings > Control Panel.
2. Double-click System.
3. Click the Device Manager tab.
4. Double-click CD-ROM.
5. Double-click the name of your CD-ROM drive.
6. Click the Settings tab.
7. Type Z in the Start drive letter and End drive letter text boxes.
Because the OS assigns all other available drive letters before assigning Z, this ensures that partition changes you make in the future do not invalidate your CD-ROM drive letter.
8. Click OK twice.
9. Click Yes to restart your computer.
If you are using DOS or Windows 3.x or you are loading your CD-ROM drivers under DOS with Windows 95 or Windows 98,
1. Go to a DOS prompt.
2. Type EDIT C:\CONFIG.SYS.
Your CONFIG.SYS file opens in the DOS editor program. Look for this line: LASTDRIVE=drive (where drive is any letter of the alphabet). Change the drive to Z. This allows the OS to assign all drive letters through Z. If your CONFIG.SYS file does not contain the LASTDRIVE=drive statement, you can add it by simply typing LASTDRIVE=Z.
3. Select File > Exit.
4. Select Yes to save the file.
You should be back to a C:\> prompt.
5. Type EDIT C:\AUTOEXEC.BAT.
Look for a line in your AUTOEXEC.BAT file that includes the word "MSCDEX." The /L:drive parameter (where drive is the drive letter assigned to your CD-ROM before you made changes with PartitionMagic) may appear at the end of this line.
6. Change the drive to Z.
Because the OS assigns all other available drive letters before assigning Z, this ensures that partition changes you make in the future do not invalidate your CD-ROM drive letter. For more information, you can type HELP MSCDEX at a DOS prompt.
If your computer is on a network, when you log in to the network, the letter "Z" and other letters at the end of the alphabet may be assigned to network search drives. In this case, assign your CD-ROM a letter immediately preceding the last letter used by the network search drives.

7. Select File > Exit.
8. Select Yes to save the file.
9. Reboot your machine.