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Flashing without Microsoft or floppy drives

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Ian Gulliver
2019-04-21 08:17:56 +00:00
parent 8b5269e90b
commit 1ef97dc192
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Ran into an issue where we had to flash upgrade some firmware in a server. As usual, firmware downloads came as MS-DOS programs, and told you to put them on a bootable DOS floppy disk and boot from it. This is becoming a real pain in the ass — who actually uses that Microsoft crap anymore? :) Also, what server has a floppy drive?
So, we improvise. Grab this [FreeDOS boot disk](files/boot.img). Mount in Linux:
sudo mount -o loop boot.img /mnt
Copy whatever files were provided by the vendor (hint: unzip handles most Windows self-extracting .exe’s) into /mnt.
sudo umount /mnt
Build a CD image:
mkdir cdimage
mkdir cdimage/boot
cp boot.img cdimage/boot
mkisofs -r -b boot/boot.img -c boot/boot.catalog -o cdimage.iso cdimage
Then burn with your favorite CD burning program. Presto!
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1. 2009-Sep-11: [Confusing BIND with CNAMEs](2009-09-11-confusing-bind-with-cnames.html)
1. 2009-Feb-19: [The odd case of my mugging](2019-02-19-the-odd-case-of-my-mugging.html)
1. 2009-Feb-03: [5-packet TCP connection?](2009-02-03-5-packet-tcp-connection.html)
1. 2006-Jan-22: [Flashing without Microsoft or floppy drives](2006-01-22-flashing-without-microsoft-or-floppy-drives.html)
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