No, it doesn't just create an ext image. The manual steps are the same
thing the script does, just spelled out to help you understand what
it's doing in case you need to do something unusual and can't use the
script. It does call mke2fs, but it calls that on an individual
partition within the image, not on the image as a whole. That's what
the "-o" option is doing.
Gabe
Quoting Anirudh Sivaraman <[email protected]>:
On Tue, Oct 4, 2011 at 4:44 PM, Gabriel Michael Black
<[email protected]> wrote:
The instructions on the website (and the script in util) don't create an
ext2 image, they create a whole disk image that includes the partition
table. X86 doesn't use the boot sector to boot, and it doesn't load the
kernel off the disk. The documentation I'm referring to is here:
http://gem5.org/Disk_images
If you're using documentation that says something different from what's at
that link, let us know so we can correct it.
Hi
Thanks for the response. I was using the same site as you mentioned
above, but read past the line : "The recommended method to create a
disk image is to use ./util/gem5img.py ". After reading it, it told me
that it was a good idea to do everything from scratch so that you can
modify things in an unusual way if required.
I think the from-scratch instructions don't include the partition
table creation. They create just an ext image using the mke2fs
command. I guess I ll try creating it with gem5img.py now.
Thanks again,
Anirudh
Gabe
Quoting Anirudh Sivaraman <[email protected]>:
Hi
I see that all the full system file images begin with an x86 boot
sector followed by partition tables. The instructions on the GEM5 site
tell you how to create an ext2 image, but not how to create an ext2
image along with the x86 boot sector and partition tables. Without the
partition tables, the kernel seems to hang on every new file image
that I create saying kernel panic. Does anyone know how to address
this issue ?
Anirudh
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