Add support for BIN/CUE images, "ISO" images and tar.gz archives #4
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Worth noting that SGI boot CDs are _NOT_ ISO-9660. For those of us used to 2048-byte sectored discs with a raw ISO-9660 or UDF file systems, SGI CDs are weird. They use 512-byte sectors and a SGI disklabel like a SGI hard drive would. They have multiple partitions (up to 16), and use the same file systems as they would on a hard drive. Typically the convention is: - 8 is used for general-purpose device file system data - 9 is the volume header partition, and is used to store the layout of the device. It *must* start at sector 0. - 11 represents the "whole device" https://irix7.com/techpubs/007-2825-001.pdf page 6 details all the various conventions (note IRIX counts partitions from 0 not 1). Our support just loads from partition 8 without considering other partitions, since this seems to be the structure used for the foundation discs.
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`losetup` doesn't always trigger a partition scan, so let's just do it ourselves using `partprobe`.
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Right now, the VM seems to go through the motions of extracting data out of I'm having fun and games with my old SGI RM5200 O2: looks like the fan isn't working, so the machine goes into a thermal shutdown… and sometimes Ethernet doesn't initialise properly (MAC address appears as So I'll open this up for others to check out while I get the last bit of working SGI hardware I have working. |
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Well… I've just gotten rid of the hardware that I was going to test this with. The O2 pretty much died and refused to power on (might just be the PSU) so was unable to try this out. However, I leave this open for others to try out and report back. |
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hey, thanks for the PR, I guess I hadn't really logged into github in a while and didn't notice this had been submitted. It's been a little while since I've worked on this project but I'll take a look at it. I did actually write an entire "version 2" of irixboot that eliminates the whole image extraction process and just uses a ton of overlay mounts but I didn't get it to where I was happy with it before moving on to other things. Sorry to hear that your hardware failed on you. Power supply failure is a common problem unfortunately. |
This adds support for distributions in the following formats:
.tar.gz)Haven't tried booting a SGI machine with this yet (still downloading some of the needed files), but this seems to make the right motions.