Win 98.se - TWO hard drives.

Is it possible to change the condition of the first partition on the slave drive from Primary to Logical without data loss?

You may wish to restate your question. One, up to four, partitions can be can be "primary". The term  " does not refer to quality or even structure. It refers to  something most users do not need to think about.  If there is one primary partition, another partition can be an extended portion. The extended is divided into one or more logical partitions. I think the max is 16. You do not want to  MAKE just an extended partition without there being at least one primary. Again, the reason for this is not something the average users even needs to think about. There is no MEANINGFUL performance issue. Before doing anything to your hard drive, make a full backup on either DVD or an external Hard Drive.  Geek9pm, thank you for your interest.

I have three partitions on the master drive and two on the slave.  When MS-Dos assigns drive letters the primary partition on the master is C: then the primary partition on the slave is D:.  Following that logical partitions on the master are ASSIGNED E: and F: then the logical partition on the slave is assigned G:.  This means that partitions C: E: and F: are on the master while D: and G: are on the slave.

See the MS Kb here.

Para 4. in the above states that:
Quote

If a second physical hard disk is found, and a primary partition exists on the second physical drive, the primary MS-DOS partition on the second physical hard drive is assigned the letter D.

My slave drive has a primary partition which I want to change to logical without losing files.  Is that achievable :-?

No.