[InactiveUser45]

I have not successfully mounted multiple CHDs and succeeded in booting. For whatever reason that just has not seemed to work.

I'm not sure what issues you're running into, but when I copy the Irix 6.2 CHD that comes with the MAME 0.224 'software list' to a copy of 'foo.chd', then the following command succeeds in booting, and the 2nd disk seems to show up in the Irix GUI 'Disk Manager' :

copy irix_6_2.chd foo.chd
mame64 indy_4610 -harddisk irix_6_2.chd -scsibus:2 harddisk -harddisk2 foo.chd

Selecting the disk and clicking on 'initialize', and then rebooting, let's me select 'mount' in the tool (onto a new mountpoint, but not extending an existing filesystem. Perhaps this is not possible with Irix 6.2 ?).

Unfortunately, I do not have enough experience with Irix to know how to proceed from there.


PS: (When I use the same copy command and MAME commandline on the Irix 6.2 image that was posted in this forum, MAME boots but the 2nd disk does not show up in 'Disk Manager'. But I cannot tell why that is).

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PS2: If you obtain the 6.2 CHD that comes with the MAME 0.224 'software list', you may not need to enlarge the filesystem to begin with: it's about 8GB in the emulated Irix instance, with about 12% used. This may be enough for your needs. YMMV.