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====== Filesystems ======

&& Crypto,..: check subpages
===== swap =====

**create and use a swapfile**

   dd if=/dev/zero of=/swapfile bs=1024 count=1000000   # = 1000mb
   mkswap /swapfile
   
edit /etc/fstab -- add a swap-line for auto activation after reboot:

   /swapfile       swap    swap    defaults        0       0


set permissions:
   chown root:root /swapfile
   chmod 0600 /swapfile

turn it on:
   swapon /swapfile

and verify:
   free -m
   mount

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===== SATA PCI-Express controller =====

discs over 2gb need a modern controller.
use these commands to activate a disc on a PCI-express controller:

show controller details and ID:

  lspci -nnk

output, e.g.: SATA controller [0106]: Marvell Technology Group Ltd. Device [1b4b:9125] (rev 11)

Associate ID with the AHCI driver:

  /bin/echo 1b4b 9125 > /sys/bus/pci/drivers/ahci/new_id

now the disc should appear in

  fdisk -l

source: https://en.wikipedia.org/wiki/List_of_Marvell_Technology_Group_chipsets

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fr33.info

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