I have read, in passing, about utilities to permit on-the-fly repartitioning of drives. My inclination is that there is too much at stake to use one of them. If your need is only to transfer files from time-to-time, you can surely consider a permanent small volume for the purpose. Your difficulty may be in 'archiving' and restoring your present OS 9.1 drive if you do not have a suitable external storage volume.
If that should be the case, why not make the iMac the client to the SE's server? The iMac (ie, OS 9.1) should have no trouble with a drive the size of any likely drive in an SE, and the doubt is only whether the iMac can dial-up the SE. This should be quickly testable, and even kludgeable, in extremis.
My SE/30 (System 7.5.5) has no trouble in mounting a 10GB drive from one of my 5500s (G3/400MHz, OS 9.1). I know that an SE/30 is not an SE, but my only current System 6.0.8 machine is having a Dove SCSI card installed at the moment, and is spread over the dining-room table. Similarly, the 5500 has no trouble in mounting both partitions of the SE/30's 4GB drive at once. You have nothing to lose but your composure, so why not try the reverse connection?
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If that should be the case, why not make the iMac the client to the SE's server? The iMac (ie, OS 9.1) should have no trouble with a drive the size of any likely drive in an SE, and the doubt is only whether the iMac can dial-up the SE. This should be quickly testable, and even kludgeable, in extremis.
My SE/30 (System 7.5.5) has no trouble in mounting a 10GB drive from one of my 5500s (G3/400MHz, OS 9.1). I know that an SE/30 is not an SE, but my only current System 6.0.8 machine is having a Dove SCSI card installed at the moment, and is spread over the dining-room table. Similarly, the 5500 has no trouble in mounting both partitions of the SE/30's 4GB drive at once. You have nothing to lose but your composure, so why not try the reverse connection?
de