On Sat, Nov 21, 2020 at 02:52:49PM -0500, Stefan Monnier wrote: > I have two machines with very similar setups: both running Debian i386 > testing, they actually come from the same install done years ago > and were cloned at some point in time. > > One of the has /boot/initrd.img files that take about 15MB while the > other has /boot/initrd.img files that take about 30MB (in both cases, > they are compressed with `lzma`). > > Any idea what this difference could come from (or how I could try and > track it down) and how I could fix the size to be more like 15MB?
The initramfs is a compressed cpio archive (of the initial file system at boot time). You can inspect it like so: gunzip < /boot/initrd.img-4.19.0-10-amd64 | cpio -it | less (substitute your real initramfs file name, of course). Its manufacturing depends on several files (see the FILES section of your `mkinitramfs' man page. Perhaps the one image has more kernel modules because your system thinks it needs them for the hardware? Cheers - t
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