Install script must find hard disk

[gustavo-serra]

Hi,

I am developing (in bash) a script that will install Linux from a clean system. I am using syslinux to boot a media where the script and its packages are stored. The destination hard disk was hard coded as /dev/sda which worked until now.

I am booting from a usb pendrive and don't know how to tell which /dev/sd* is the hard disk.

So far the best idea that I have is to look in /sys/block/sd*/removable. If the value is 1, I assume that it is a pendrive.

Does anyone know a better approach?
Thanks in advance.

[tpl]

welcome to the forum

something like this might help

fdisk -l | sed -n '2p' | cut -d" " -f2 | sed s/://

[gustavo-serra]

Thanks for the welcome and for the reply.

The solution is simpler than I thought. However, is there any guarantee that hard disks will be always the first "sd*"? Is udev responsible for this assignment?

Thanks again.