Microsoft KB Archive/65535

= Resolving FTSETUP &quot;Not Enough Disk Space to Mirror Drive&quot; Err. =

Article ID: 65535

Article Last Modified on 9/30/2003

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APPLIES TO


 * Microsoft LAN Manager 2.0 Standard Edition

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This article was previously published under Q65535



SUMMARY
Question:

I am trying to implement fault tolerance on a Compaq Deskpro with two 325 MB hard disk drives. When I run FTSETUP to mirror drive D, I get the error message, &quot;There is not enough disk space to mirror drive.&quot; My first hard disk drive (logical drive C) has a boot partition of 80 MB and an extended partition (logical drive D) of 245 MB. The second hard disk drive has been partitioned the same way (logical drive E of 80 MB and logical drive F of 245 MB). Both hard disk drives are straight HPFS and, other than OS/2 and OS/2 LAN Manager on drive C, there is nothing else on the hard disk drives. Why is this error message displayed?

Response: Mirrored partitions are created in the UNUSED space of the extended partition on the second drive. Logical drives take up space, so FTSETUP was unable to set up a mirrored drive. To correctly install fault tolerance at this point, you need to delete the logical drive and try the mirror operation again.

Several other potential reasons for this error message are listed below:

 Attempting to mirror the boot partition

You cannot mirror the boot partition.

 Attempting to mirror on the same drive

Drive mirroring can only be performed on a computer with two hard disks.

 Not enough extended partition space on the mirroring drive

Use FTSETUP or the PM fixed disk utility (FDISK) to delete the disk partition.

Keywords: KB65535

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