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I'm installing a CentOS 7 VM, and I would like to create a RAM disk inside the %pre section of a Kickstart file.

However, doing so via

mkfs -q /dev/ram1 8192

is not possible as the mkfs binary is not present in the Kickstart environment, and all other mkfs.* filesystem-specific commands return an error "/dev/ram1: no such file or directory".

Is there any other way to do so?

2

It turns out that the device node needed to be created with

mknod /dev/ram1 b 1 1

Once this is done, it can be formatted via e.g. mkfs.ext2:

mkfs.ext2 /dev/ram1 8192

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