mkdir \/mnt\/debian-cd<\/pre>\nSimple as that.<\/p>\n
Tell our system to mount the ISO file every time we boot the server<\/h3>\n
Now we need to make sure that the ISO file is mounted into the correct directory on boot. We do this by editing the fstab file inside the \/etc directory. We’re going to use a command line text editor called Nano to do this (note: you can also use Vim if you want):<\/p>\n
nano \/etc\/fstab<\/pre>\nScroll to the bottom of that file and add the following line:<\/p>\n
\/mnt\/storage\/debian-8.2.0-i386-CD-1.iso \/mnt\/debian-cd\/ udf,iso9660 loop 0 0<\/pre>\nNote: if you’ve downloaded a different version of Debian, make sure that you’ve replaced “debian-8.2.0-i386-CD-1.iso” with the full name of the file you downloaded.<\/p>\n
Save those changes by clicking Ctrl+O, press enter to keep the same file name, then press Ctrl+X to exit Nano.<\/p>\n
Tell Debian to look at our mount point directory instead of a CD-ROM<\/h3>\n
Now, we need to tell Debian to look at this new mount point instead of searching for a nonexistent CD-ROM. We do this by editing the sources.list file inside the \/etc\/apt directory, which tells Debian where to search for application packages when using the apt-get<\/code> command.<\/p>\nAgain, we’re going to use Nano to open and edit this file:<\/p>\n
nano \/etc\/apt\/sources.list<\/pre>\nFirst, we want to comment out the line telling Debian to look for a CD. Add a hash (#) to the beginning of this line:<\/p>\n
deb cdrom:[Debian GNU\/Linux 8.2.0 _Jessie_ - Official i386 CD Binary-1 20150906-10:02]\/ jessie main<\/pre>\nThe hash comments out that line, which\u00a0tells the computer not to read it. Next, we’re going to tell Debian exactly where to look instead. Add this line right underneath the line we just commented out:<\/p>\n
deb file:\/mnt\/debian-cd\/ jessie main contrib<\/pre>\nI’m using the version of Debian called Jessie, which is why you see jessie<\/code> in the above line. If you’re using a different version of Debian, you’ll need to replace jessie with the version that you’re using.<\/p>\nPress Ctrl+O to save these files, enter to keep the same file name, and Ctrl+X to exit Nano.<\/p>\n
Mount the image and refresh these changes<\/h3>\n
We’re almost done! All that’s left is to mount the ISO file to the directory we created:<\/p>\n
mount \/mnt\/debian-dvd\/<\/pre>\nThen refresh the changes:<\/p>\n
apt-get update<\/pre>\nIf everything works as it should, you’re now using an ISO file in lieu of a CD-ROM!<\/p>\n\n