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Re: New Grub2 verses Debian 9.5 -boots slow and strange?

From: Pascal Hambourg
Subject: Re: New Grub2 verses Debian 9.5 -boots slow and strange?
Date: Sun, 21 Oct 2018 09:31:48 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

Le 21/10/2018 à 01:11, address@hidden a écrit :

On Sat, 20 Oct 2018, Pascal Hambourg wrote:

No swap indeed. But there are two unformatted partitions (or with unknown format). Intriguing. Can you check with

file -s /dev/sda2 /dev/sdb5
wipefs /dev/sda2
wipefs /dev/sdb5

address@hidden:/etc/initramfs-tools/conf.d# cat resume

So there once was a swap with this UUID. But it cannot be found any more. Maybe /etc/fstab still contains information about it.

You have basically two options :
- remove the swap references in resume and fstab and run update-initramfs -u
- or recreate a swap with the same UUID in sdb5

Hi Pascal,

I am nervous about running wipefs. Especially since its man page does not match is operation. plain wipefs doesn't show anything while the manpage says it should.

Dont worry about wipefs : without -o or -a, it does not erase anything and just looks for metadata signatures. Sometimes it is better than file at finding signatures.

file -s thinks the swap partitions are data?

Meaning that it found nothing.

   fdisk thinks there are swap partitions.

fdisk displays the partition type identifier recorded in the partition table, which does not have to match the actual partition contents. But then we can assume they are swap partitions which should be formatted as swap.

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sdb5       19840338 30700214 10859877  5.2G 82 Linux swap / Solaris
Device     Boot     Start       End   Sectors  Size Id Type
/dev/sda2       838862848 843057151   4194304    2G 82 Linux swap / Solaris

As I suggested, if you want to use sdb5 as swap you can format it with the UUID present in /etc/initramfs-tools/conf.d/resume :

mkswap --uuid b66a9345-332d-4abf-a081-351ab08ed7f9 /dev/sdb5

Did you check if /etc/fstab contains any references to swap partitions ?

Also, I assume that sda2 was used by the system installed on sda and maybe this system also misses its swap partition ?

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