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Activate swap on boot?

(10 posts) (4 voices)

• Started 8 years ago by emninger
• Latest reply from emninger
• This topic is not resolved

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1. 

   emninger
   

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   I've a Slitaz installation on an old HP Pavilion (AMD Turion) with an internal ata flash disk formatted like this:

   [code]
   Device Boot Start End Blocks Id System
   /dev/sda1 * 1 14882 119537664 83 Linux
   /dev/sda2 14882 15404 4193280 82 Linux swap
   Partition 2 does not end on cylinder boundary
   [/code]

   The swap partition is also in /etc/fstab
   But, according to what says conky (with the default Slitaz conky config file) swap is disabled.

   I looked for grub.conf to configure the swap partition in grub, but i didn't find it. grub is the bootloader i know less (more yaboot and lilo ;) ), but i remember from debian, there was a grub.conf file in /etc.

   Posted 8 years ago #
2. 

   llev
   

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   The definitive command to know if swap is on is:
   free

   Swap should be on if it is in fstab. Browse the system messages to look for related errors:
   dmesg|less
   (In "less", hit "/" to begin a search, type the word to search for, then "Enter". Then "n" to search again.)

   Are you sure your swap partition is swap-formatted? The FS ID in the partition table is not enough to be sure. It doesn't hurt to reformat it:
   mkswap /dev/sda2
   as root, but PLEASE BE 100% SURE /dev/sda2 IS THE CORRECT DEVICE NUMBER!

   P.-S. : use HTML tags, between <> not [].

   Posted 8 years ago #
3. 

   emninger
   

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   Thanks for answering. free says:

   total used free shared buffers
   Mem: 2071908 1309340 762568 0 87768
   -/+ buffers: 1221572 850336
   Swap: 4193276 0 4193276

   Yes i'm sure it's swap formatted. cfdisk says:

   sda1 Boot Primäre ext4 122406,57*
   sda2 Primäre swap 4293,92*

   In dmesg|less i did not find anything related to swap.

   My fstab looks like this:
   # /etc/fstab: Information about static filesystems.
   #
   proc /proc proc defaults 0 0
   sysfs /sys sysfs defaults 0 0
   devpts /dev/pts devpts rw,gid=5,mode=0620 0 0
   tmpfs /dev/shm tmpfs defaults 0 0
   tmpfs /var/lock tmpfs defaults 0 0
   /dev/cdrom /media/cdrom iso9660 user,ro,noauto 0 0
   #/dev/sda3 /home ext3 defaults 0 2
   #/dev/hdb1 /mnt/data btrfs defaults 0 2
   #datasvr:/nfs/home /home nfs tcp,nolock 0 0
   /dev/sda2 swap swap defaults 0 0

   Just out of curiousity: Why sda1 is not there? Btw, i did not touch fstab; it's those formed during the installation of Slitaz i presume-

   Posted 8 years ago #
4. 

   yves04
   

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   As yours my fstab doesn't show /dev/sda1
   Just type $mount and you'll see something like
   /dev/sda1 on / type ext3 (rw,relatime,errors=continue,user_xattr,barrier=1,data=ordered)
   Have a nice day

   Posted 8 years ago #
5. 

   emninger
   

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   I tried $mount as user and as root, but nothing shows up ... ???

   Posted 8 years ago #
6. 

   llev
   

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   Swap: 4193276 0 4193276

   Congratulations, you have swap!

   I tried $mount as user and as root, but nothing shows up

   "$" represents the prompt of a normal user in a terminal (# is the prompt for root).
   So the command is "mount". Native commands never contain special characters (only letters, digits, -, _, and exceptionally +).

   If you're going to use SliTaz regularly, buy yourself a book on Linux, it will prove very useful!

   Posted 8 years ago #
7. 

   llev
   

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   Also, never type as root a command you don't know, if you've not been told to do so. This is dangerous!

   Posted 8 years ago #
8. 

   Ceel
   

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   @emninger

   Not familiar at all with fstab file but maybe you don't see sda1 in it because it's the root

   Posted 8 years ago #
9. 

   llev
   

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   fstab is not required to mount a device. Basically it is a list of "known" filesystems, describing their type, parameters, etc. and assigning a mount point to each. This allows to type e.g. mount /home and mount will take the missing info from fstab (the regular syntax to call mount is mount -o options -t type /device /mountpoint).

   Posted 8 years ago #
10. 

    emninger
    

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    Thanks ilev! A good lesson :) Actually i'm on another machine. Will try later on.

    Posted 8 years ago #

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