Never tried, but I thought it was possible to mount the raw partition under Vbox. Then it would just be a matter of xcopying the contents to a new 3GB VDI.
I have tried mounting a raw partition under VBox. I never got it to work. From what I saw, it appears that the partition information is virtualized, and only the data portion of the disk is attached. That seems to work with NTFS, or FAT32 partitions, but not with HPFS, or JFS, partitions. Be careful trying it, you can mess up the real disk.
I've got an ArcaOS partition on a machine, that I want to convert to a VDI.
That could be tricky, but it is probably not difficult. Using a DFSEE image probably won't work, unless you restore it to a disk using DFSEE, and that only restores exactly what you backed up, and it would probably need to be to a similar sized disk to get the geometry correct.
Anyway, what I would try, would be to ZIP the whole volume, using -r9yS parameter (under OS/2, of course). Boot an alternate OS/2 boot system, in the VM (the ArcaOS installer would do), configure (LVM), and format, the VDI using OS/2, then UNZIP the ZIP file into it. You may need to use SYSINSTX.COM to make it bootable (but I haven't needed to do that, yet). If it is the C: drive, and you use a primary partition, you probably won't need Air Boot (or Boot Manager). If it is not C:. or you use a logical drive, you will need Air Boot to get it to boot. Install with LVM.
Before you do anything, you will need to make CONFIG.SYS compatible with a VBox machine Most of it should be okay, but the driver for the network probably needs to change. You may also need AHCI, or IDE (Danis) support, depending on how you set up the VM.
Have fun...
