I had a super fast but small SSD and didn’t know what to do with it, so I was playing with caching slow spinning LVM drives. It worked pretty good, but I got interrupted and came back a few weeks later to upgrade the OS. I forgot about the caching LVM, updated the packages in preparation for the OS upgrade, then rebooted. The LVM cache modules weren’t in the initfs image and it didn’t boot.
I should know better. I used to roll my own kernels since Slackware 1.0. I’ve had build initfs images for performance tweaks. Ugh!
Where’s my rescue disk?
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Rescue disk 🤣 It’s hard enough to find a drive much less a disk.
Next time keep your old kernel around a while, you can always boot it to fix a goof instead of messing around with rescue images.
🤦♀️ I’ve never considered this, but it’s the simplest solution and makes perfect sense. I’m always so diligent to keep my system clean to save a few megs.
This particular server is an old PowerEdge server I’m using to learn server stuff on and a practice home lab. Unfortunately, it won’t boot from SD card, so I have a few DVD RW’s in a drawer. I’ve read that there’s a SD slot inside that you can emulate a floppy, but haven’t explored it.
A Gentoo LiveUSB and some chroot would save your day!
Adding a netboot.xyz EFI boot menu entry can be useful if you do not need a live system often and do not have a USB stick when you do.
But don’t you need a wired network connection for this to actually work?
I have only tried it with wired but it uses ipxe and that is supposed to work with Android USB tethering too to bridge to other kinds of network access.
I have the Debian netinst disk, but it doesn’t include the dm-cache modules, so I downloaded the live DVD last night. I only get about an hour a day to work on stuff.
Just boot from live USB and fix it.
