[Install XP from a RAM loaded ISO image]

@TigerWhite

Thanks for report.

Which BIOS settings do you use?

Does your VirtualBox use a floppy drive? Does exist a floppy controller?

VirtualBox system settings :

System
Base Memory:   1024 MB
Processor(s):	 1
Boot Order:	   CD/DVD-ROM, Hard Disk
VT-x/AMD-V:	 Enabled
Nested Paging:   Disabled

Floppy  :			Not mounted

Though I have not mounted any floppy, a floppy controller exists in the vm.

[Install XP from a RAM loaded ISO image]

This is not necessary anymore at firadisk 0.0.1.12.

Once is sufficient now

map --mem /Inst/XP_INST.IMA (fd0)

I tested XP_INST_v02 (which I understand includes firadisk 0.0.1.12) for installing XP SP3 integrated with BTS massstorage driverpack on VirtualBox mapping only once:

map --mem /Inst/XP_INST.IMA (fd0)

The setup fails in the textmode itself complaining that it could not copy the firadisk files.

However mapping twice with

map --mem /Inst/XP_INST.IMA (fd0)
map --mem /Inst/XP_INST.IMA (fd1)

installation is successful!

I have confirmed this with wimb's approach given in Post #7 in VirtualBox. I am yet to test this in a real system.

Is the necessity of double mapping limited to VirtualBox only?

Can redundant mapping cause problems in real hardware?