requirements: remove brands hardware, remove old oldstable, miscspell…

…ed fixes, swap optional

* taking in consideration that SSD and HDD are still made
  and now there is the HHD (Helium Hard drives) those with helium inside
  for high demand storage .. in speciall NAS systems.
  the SDD is not the best for NAS systems, HDD/HHD are the best..
  so i included the "HHD" inside the formula.. so this information
  will not be out of date in many years.. cos spining disks still
  are the best for long data

prerequisites.rst

@@ -13,7 +13,7 @@ Hardware requirements
 ======  ================  =========  ==========  ==================================
  Item    supported         Minimal     Best       Recommendation
 ======  ================  =========  ==========  ==================================
- DRIV    SSD/HDD/USB...     1,any     2,KIOXIA    2 disks: Seagate Firecuda, WD Black, IronWolf
+ DRIV    SSD/HDD/USB...     1,any      2,HHD    2 disks: Seagate Firecuda, WD Black, IronWolf
  RAM     1GiB+ any          1GiB       4Gig       8GiB+ dual channel DDR4/DDR3
  NIC     WiFi/Ether/USB     any       10Mb NIC    1GiB NIC or 10Gb NICs: SFP fiber
  CPU     arm,x86,x64        32bit      64bit      Intel Dual Core, AMD Ryzen
@@ -27,25 +27,20 @@ interface (SATA, ISE, SCSI, USB, SERIAL) but information and management will
 depend on the disk drives supported by the Debian operating system.
 **Supported Debian OS versions can be checked in the** :doc:`releases section </releases>`.
 
-However, the manufacturers to consider depend on the type of disks. 
-For HDDs, Seagate FireCuda disks, Western Digital Black disks, 
-and for SSDs, KIOXIA or Toshiba are the best for. In case of USB or EMMC, 
-companies are reluctant to provide information, so avoid the Samsung brand.
-
 Modern storage drives have firmware inside that reports several attributes.
 Any storage drives is supported but |omv| only supports SMART for those
 disks that are connected to an HBA in pass-through mode.
 
 The system manages two types of storage unit classification:
 
 System drive storage (SDS)
-  The Storage Disk Drive(s) used to put the system program files (by partitions), 
-  **this system drive (that is in fact a couple or more partitions) 
+  The Storage Disk Drive(s) used to put the system program files. 
+  **This system drive (which can consist of several partitions) 
   cannot officially be used for shared resources or as user data drive**.
-  What supported brands and sizes are covered in the software requirements section below.
   The recommendation for the system drive(s) hardware could be older spinning
   Hard Disk Drives (HDD), Disk-on-Module [3]_, CompactFlash [4]_ or thumb drives (USB),
-  the Solid State Disks (SDD [2]_) must be managed.
+  the Solid State Disks (SDD [2]_) must be managed. Best option are 
+  the Helium Hard Drives (HHD).
 
 Data drive storage (DDS)
   The storage disk drive(s) where the user data will be stored. **Cannot be 
@@ -97,19 +92,19 @@ where |omv| system resides and runs, which is Debian GNU/Linux.
 Any computer system supported by the common requirements of Debian operating
 system could be an |omv| system installation target. **Currently supported are
 AMD64 (x86/x86-64 64bits), i386 (x86 32bits), ARMv7+ARMv8 (arm64 64bits armel/armhf 32bits)**.
-The i386 version stopped its official support in version 6 although it is still 
-being released by the project due the nature of the |omv| technology.
+The i386 version is no longer officially supported since version 6, although
+it is still published by the project due to the nature of |omv| technology.
 
 Software requirements
 ---------------------
 
 ======  =================  ==============  ==============  =======================================
  Item    Software           Minimal         Best            Recommendation
 ======  =================  ==============  ==============  =======================================
- OS      Debian Linux       oldoldstable    stable          Current stable (plus 1 month released)
+ OS      Debian Linux       oldstable       stable          Current stable (plus 1 month released)
  BOOT    BIOS,UBOOT,UEFI    BIOS,mbr        BIOS,gpt        Disable Secure boot, gpt table
  SDS     HDD,SSD,USB...     1, 4GiB        2, 120+500GiB    Disk drive with 120G root size, 8G swap size
- DDS     HDD,SSD,USB...     0 or any        1 per share     One disk or part per shared resource
+ DDS     HDD,SSD,USB...     0 or any        HHD,1 per share One disk or part per shared resource
  NET     LAN,WAN,SAN,VPN    LAN             SAN,PAN,LAN     Fiber IPv4, or at least cable LAN
 ======  =================  ==============  ==============  =======================================
 
@@ -150,8 +145,8 @@ the |omv| can be installed without problems.
 
 However the downloadable and ready-to-use ISO image from the official |omv| website
 only supports AMD64 with BIOS mode boot at the moment. If you want to have |omv| on
-other computers with another boot type/mode you should install Debian first
-and then manually the |omv| can be installed without problems.
+other computers with another boot type/mode, then you should install Debian first
+and then :doc:`manually</installation/on_debian>` |omv|.
 
 **Supported Debian OS versions can be checked in the** :doc:`releases section </releases>`.
 
@@ -162,26 +157,26 @@ Any brand of storage disk will be supported as long as it is supported by
 the Debian operating system version, since it is where |omv| system resides
 and runs, which is Debian GNU/Linux, check it at the :doc:`releases section </releases>`.
 
-The system storage disk will be fully managed and taken over by the |omv| after
+The system storage disk will be fully managed and taken over by |omv| after
 installed. In case of the official ISO installation, will automatically partition
 the system storage disk drive into 3 partitons. Consult the next table for.
 
 In case of a manual installation on a previous Debian operating system, this
-**drive must have at least two partitions**. Consult the next table for.
+**drive should have at least two partitions**. Consult the next table for.
 
 ============  ==========  ===========  =======================================
  Partition     Mininmal    Best size    Mandatory
 ============  ==========  ===========  =======================================
  ``/boot``      256Mib      500Mib      Optional, partition used to boot
  ``/``           4Gi        120GiB      Yes, the partition were system install
- ``swap``       100Mib      16GiB       Yes, the partition for virtual ram
+ ``swap``       100Mib      16GiB       Optional, the partition for virtual ram
 ============  ==========  ===========  =======================================
 
 The Data drive storage (DDS)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The data storage disk will be partially managed by the |omv| after installation,
-and only in customized installation can be a partiton of the same system drive
+and only in customized installation this can be a partition of the same system drive
 storage.
 
 Each data storage drive will be managed, but regardless of the partitioning