Jeg kan se at din interne HD kører som basic disc hvorimod din eksterne kører som dynamisk disk.
Hos mig kører begge diske som basic.
Har du Windows XP Home?
Microsoft Windows XP, Windows 2000 and Windows Server 2003 offer two types of disk storage: basic and dynamic.
Kode: Vælg alt
Basic Disk Storage
Basic storage uses normal partition tables supported by MS-DOS, Microsoft Windows 95, Microsoft Windows 98, Microsoft Windows Millennium Edition (Me), Microsoft Windows NT, Microsoft Windows 2000, Windows Server 2003 and Windows XP. A disk initialized for basic storage is called a basic disk. A basic disk contains basic volumes, such as primary partitions, extended partitions, and logical drives. Additionally, basic volumes include multidisk volumes that are created by using Windows NT 4.0 or earlier, such as volume sets, stripe sets, mirror sets, and stripe sets with parity. Windows XP does not support these multidisk basic volumes. Any volume sets, stripe sets, mirror sets, or stripe sets with parity must be backed up and deleted or converted to dynamic disks before you install Windows XP Professional.
Dynamic Disk Storage
Dynamic storage is supported in Windows XP Professional, Windows 2000 and Windows Server 2003. A disk initialized for dynamic storage is called a dynamic disk. A dynamic disk contains dynamic volumes, such as simple volumes, spanned volumes, striped volumes, mirrored volumes, and RAID-5 volumes. With dynamic storage, you can perform disk and volume management without the need to restart Windows.
Note: Dynamic disks are not supported on portable computers or on Windows XP Home Edition-based computers.
You cannot create mirrored volumes or RAID-5 volumes on Windows XP Home Edition, Windows XP Professional, or Windows XP 64-Bit Edition-based computers. However, you can use a Windows XP Professional-based computer to create a mirrored or RAID-5 volume on remote computers that are running Windows 2000 Server, Windows 2000 Advanced Server, or Windows 2000 Datacenter Server, or the Standard, Enterprise and Data Center versions of Windows Server 2003.
Storage types are separate from the file system type. A basic or dynamic disk can contain any combination of FAT16, FAT32, or NTFS partitions or volumes.
A disk system can contain any combination of storage types. However, all volumes on the same disk must use the same storage type.
Jeg er ikke sikker på om det har indflydelse på det men kigger på det...
I tilfælde af at det har (hvilket jeg næsten er overbevist om) så kan du konvertere den tilbage til en basic disk men alt data bliver slettet på den eksterne.
http://www.microsoft.com/resources/docu ... x?mfr=true
Regler omkring drev bogstaver:
Here's the list of priorities Windows uses by default to assign drive letters.
• Floppy drives are assigned to A and B.
• Drive letters are then assigned to each additional drive, starting with Drive C, in the following order:
• The Primary partition on the hard disk set as Master on the Primary IDE channel
• Primary partitions on other IDE hard disks, starting with the Slave on the Primary IDE channel, then the Master on the Secondary IDE channel, then the Slave on the Secondary channel and so on for any additional IDE channels.
• Primary partitions on SCSI hard disks, starting with the lowest SCSI ID first.
• Logical drives defined in the Extended partition of the disk that is assigned as Drive C.
• Logical drives defined in the Extended partition of any subsequent hard disks, in the same order as above.
• Any optical drives (such as CD-ROMs) in the same order as for hard disks.
• Logical drives defined in the Extended partitions of any removable media drives.
• Drives that use drivers in the CONFIG.SYS file.
• Networked drives that are mapped as local drives.