Comment 3 for bug 1738840

I tried to make a quick grep of the start of the disk in the "bad" raw image and it does not exist anywhere so there is more ot it then just a offset issue.

rg -M 20 -a --encoding=ascii '\xeb\x63\x90\x00\x00\x00\x00\x00\x00\x00\x00\x00' coreos_production_openstack_image.bin.apfs
or
rg -M 20 -a --encoding=ascii 'GRUB \x00Geom\x00Hard Disk\x00Read\x00 Error' coreos_production_openstack_image.bin.apfs

The actual data seams to start here:
$ hexdump -C coreos_production_openstack_image.bin.apfs | head
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
0cc4f000 48 8b 4c 24 58 48 89 4c 24 08 48 89 44 24 10 e8 |H.L$XH.L$.H.D$..|
0cc4f010 3c a5 c5 ff 48 8b 44 24 18 48 8b 4c 24 20 48 8d |<...H.D$.H.L$ H.|
0cc4f020 15 9b e9 3f 00 48 39 c2 75 22 48 8b 44 24 48 48 |...?.H9.u"H.D$HH|
0cc4f030 8b 00 48 89 44 24 10 48 89 0c 24 66 c7 44 24 08 |..H.D$.H..$f.D$.|
0cc4f040 00 00 e8 c9 00 00 00 e9 70 ff ff ff 48 89 04 24 |........p...H..$|
0cc4f050 48 89 54 24 08 48 8d 05 e4 cf 3e 00 48 89 44 24 |H.T$.H....>.H.D$|
0cc4f060 10 e8 1a f1 bb ff 0f 0b e8 a3 5a c0 ff e9 7e fe |..........Z...~.|
0cc4f070 ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc |................|

and ends here:
261bf040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
21f600000

There are som small small zones of zeroes here and there also but not much.

And the file size seams small and wrong.
$ ls -lah coreos_production_openstack_image.bin.apfs

$ du -hs coreos_production_openstack_image.bin.apfs
 16M coreos_production_openstack_image.bin.apfs