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Burn an ISO to a USB stick

February6

Every time I want to do this it seems to take waaay longer than it should. Here then, the instructions in n steps under Linux.


sudo lsblk

Check and see which device is your USB stick. In the commands below, the device is listed as /dev/sdaX, but in reality it will be /dev/sdc probably. Be careful. If you mis-select the device you could potentially DESTROY all your data, in which case you will have to go through all five stages of data recovery grief, namely..

Denial = “It wasn’t me

Anger = “How the fuck did I just do that? What was I thinking, cutting and pasting commands off the interwebs??

Bargaining = “If I reboot the machine, the data will probably come back. Actually, thats almost a certainty.

Depression = “Who suggested rebooting? What a stupid idea that was. I’m completely screwed. Why didn’t I do routine backups, especially of my thesis, my research, my entire music collection and all my photos since 2003.

Acceptance = “Either fork out for a data recovery company or start fresh with nothing.

Consider yourself warned. And also, make regular backups.

So, unmount the USB drive in question..


sudo umount /dev/sdX

Format it as FAT32


sudo mkdosfs -n 'usb-bootable' -I /dev/sdX -F 32

Run isohybrid..


sudo isohybrid /home/username/Downloads/systemrescuecd-x86-4.7.1.iso

Now burn the iso image to USB


sudo dd if=/home/username/Downloads/systemrescuecd-x86-4.7.1.iso of=/dev/sdX bs=4k

Flush data to the USB drive..


sudo sync

And eject the USB drive..


sudo eject /dev/sdX

Finished. Your USB pendrive is bootable and ready to go.

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Mount a CD in Linux

September18

This works for any version of Linux as it’s a universal command and is very simple.

First, su as root

$sudo su

Now create the directory where you want to see the CD/DVD files..

# mkdir -p /media/mycd

Now use the mount command to mount the CD

# mount -o loop /path/to/my/iso/my_favourite.iso /media/mycd

The files are now visible in /media/mycd.

Done.

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Create an iso image from a CD..

September18

Two steps…

isoinfo -d -i /dev/cdrom | grep -i -E 'block size|volume size'

You get this output…

Logical block size is: 2048
Volume size is: 1620057

Using this information, we insert the numbers into the dd command..

dd if=/dev/cdrom of=/home/user/iso_files/test.iso bs=2048 count=1620057

And that’s it. Happiness!

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