Deleted Swap, now boot takes forever
If you want to remove the swap partition, you should first try by commenting its entry in /etc/fstab
, then reboot.
As for the long boot time, it may be that one of your filesystems has been damaged. As soon as your system is up, run the appropriate fsck.*
command for each of the file systems. If it reports errors, it will usually recommend how to fix them.
(Btw, running a system without swap is perfectly normal. I'm doing this since several years – these days, common machines have enough RAM.)
From Terminal run
sudo blkid
Then
cat /etc/fstab
Double check that the fstab entry for swap partition matches all entries in the blkid
Your fstab entry should look something like this=>
UUID=your/UUID/here none swap sw 0 0
If they don't match with each other, change UUID in fstab using your preferred text editor, to match the one you get from command sudo blkid
. Then reboot and you'll see the effect.
You may also need to edit the /etc/initramfs-tools/conf.d/resume
file and comment out any references to the deleted Swap partition
sudo nano /etc/initramfs-tools/conf.d/resume
#RESUME=UUID=2854a8db-6494-44ac-9cee-974714bb0b00
I commented out the swap entries in /etc/fstab
and the slow boot wasn't resolved. I also made sure that my swap wasn't encrypted, since no /etc/crypttab
existed as suggested by @ankit7540. In the end, i came across this error message while installing a virtualization package and this gave me the right direction
W: initramfs-tools configuration sets RESUME=UUID=2854a8db-6494-44ac-9cee-974714bb0b00
W: but no matching swap device is available.
From the docs:
The initramfs is an cpio archive. At boot time, the kernel unpacks that archive into ram, mounts and uses it as initial root file system. From there on the mounting of the real root file system occurs in user space.
resume
The resume hook tries to autodetect the resume partition and uses the first swap
partition as valid guess. It is possible to set the RESUME variable in
/etc/initramfs-tools/conf.d/resume. The boot variable noresume overrides it.
In simpler words, since a swap partition is a requirement for hibernation in Ubuntu, it makes sense that it'll be defined in some boot config as the RESUME
parition and the boot process will look for it.