<s>
ArcaOS	B-Device
is	O
an	O
operating	B-General_Concept
system	I-General_Concept
based	O
on	O
OS/2	B-Application
,	O
developed	O
and	O
marketed	O
by	O
Arca	B-Device
Noae	I-Device
,	I-Device
LLC	I-Device
under	O
license	O
from	O
IBM	O
.	O
</s>
<s>
It	O
builds	O
on	O
OS/2	B-Application
Warp	O
4.52	O
by	O
adding	O
support	O
for	O
new	O
hardware	O
,	O
fixing	O
defects	O
and	O
limitations	O
in	O
the	O
operating	B-General_Concept
system	I-General_Concept
,	O
and	O
by	O
including	O
new	O
applications	O
and	O
tools	O
,	O
and	O
includes	O
some	O
Linux/Unix	O
(	O
tool	O
)	O
compatibility	O
.	O
</s>
<s>
It	O
is	O
targeted	O
at	O
professional	O
users	O
who	O
need	O
to	O
run	O
their	O
OS/2	B-Application
applications	O
on	O
new	O
hardware	O
,	O
as	O
well	O
as	O
personal	O
users	O
of	O
OS/2	B-Application
.	O
</s>
<s>
Like	O
OS/2	B-Application
Warp	O
,	O
ArcaOS	B-Device
is	O
a	O
32-bit	O
single	B-Operating_System
user	I-Operating_System
,	O
multiprocessing	B-Operating_System
,	O
preemptive	O
multitasking	O
operating	B-General_Concept
system	I-General_Concept
for	O
the	O
x86	B-Operating_System
architecture	I-Operating_System
.	O
</s>
<s>
It	O
is	O
supported	O
on	O
both	O
physical	O
hardware	O
and	O
virtual	B-Architecture
machine	I-Architecture
hypervisors	B-Operating_System
.	O
</s>
<s>
ArcaOS	B-Device
supports	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
systems	O
with	O
up	O
to	O
64	O
processor	B-General_Concept
cores	O
,	O
although	O
it	O
is	O
recommended	O
to	O
disable	O
hyperthreading	B-Operating_System
.	O
</s>
<s>
As	O
of	O
version	O
5.0.6	O
,	O
ArcaOS	B-Device
is	O
ACPI	B-Device
6.1-compliant	O
and	O
includes	O
the	O
20200717	O
release	O
of	O
ACPICA	O
.	O
</s>
<s>
While	O
ArcaOS	B-Device
is	O
a	O
32-bit	O
operating	B-General_Concept
system	I-General_Concept
,	O
it	O
has	O
limited	O
PAE	B-General_Concept
support	O
which	O
allows	O
it	O
to	O
use	O
RAM	B-Architecture
in	O
excess	O
of	O
4GB	O
as	O
a	O
RAM	B-Application
disk	I-Application
.	O
</s>
<s>
ArcaOS	B-Device
supports	O
being	O
run	O
as	O
a	O
virtual	B-Architecture
machine	I-Architecture
guest	O
inside	O
VirtualBox	B-Operating_System
,	O
VMware	B-Operating_System
ESXi	I-Operating_System
,	O
VMWare	B-Operating_System
Workstation	I-Operating_System
and	O
Microsoft	B-Application
Virtual	I-Application
PC	I-Application
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
device	B-Application
drivers	I-Application
included	O
with	O
OS/2	B-Application
Warp	O
4	O
,	O
ArcaOS	B-Device
includes	O
a	O
variety	O
of	O
drivers	O
developed	O
by	O
Arca	B-Device
Noae	I-Device
,	O
and	O
various	O
third	O
parties	O
:	O
</s>
<s>
Network	O
adapters	O
are	O
supported	O
either	O
with	O
Arca	B-Device
Noae	I-Device
's	O
MultiMac	O
technology	O
,	O
which	O
employs	O
FreeBSD	B-Operating_System
driver	O
code	O
,	O
or	O
a	O
selection	O
of	O
GenMAC	O
drivers	O
.	O
</s>
<s>
Support	O
for	O
wireless	O
networking	O
is	O
somewhat	O
limited	O
,	O
though	O
MultiMac	O
support	O
for	O
additional	O
chipsets	O
is	O
planned	O
for	O
future	O
releases	O
of	O
ArcaOS	B-Device
.	O
</s>
<s>
ArcaOS	B-Device
replaces	O
the	O
16-bit	O
IBM	B-Application
OS/2	I-Application
USB	O
driver	O
with	O
a	O
new	O
32-bit	B-Application
driver	I-Application
capable	O
of	O
supporting	O
USB	O
2.0	O
and	O
USB	O
3.0	O
controllers	O
.	O
</s>
<s>
Audio	O
support	O
utilizes	O
the	O
Uniaud	O
generic	O
audio	O
driver	O
,	O
now	O
maintained	O
by	O
Arca	B-Device
Noae	I-Device
.	O
</s>
<s>
Uniaud	O
is	O
based	O
on	O
the	O
ALSA	B-Application
framework	O
from	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
In	O
addition	O
,	O
a	O
selection	O
of	O
device-specific	O
drivers	O
are	O
included	O
with	O
ArcaOS	B-Device
.	O
</s>
<s>
A	O
new	O
audio	O
driver	O
is	O
planned	O
for	O
future	O
releases	O
of	O
ArcaOS	B-Device
,	O
based	O
on	O
FreeBSD	B-Operating_System
audio	O
drivers	O
.	O
</s>
<s>
Video	O
support	O
is	O
provided	O
by	O
Panorama	O
generic	O
unaccelerated	O
VESA	B-Device
driver	I-Device
,	O
or	O
SNAP	O
accelerated	O
video	O
driver	O
.	O
</s>
<s>
Support	O
for	O
these	O
features	O
in	O
additional	O
chipsets	O
,	O
such	O
as	O
the	O
Intel	B-Application
HD	I-Application
series	O
,	O
is	O
planned	O
.	O
</s>
<s>
Storage	O
drivers	O
are	O
available	O
for	O
IDE	B-Protocol
,	O
AHCI	O
,	O
NVMe	B-Application
and	O
a	O
number	O
of	O
SCSI	B-Architecture
adapters	O
.	O
</s>
<s>
Support	O
for	O
printers	O
is	O
provided	O
by	O
the	O
eCups	O
project	O
,	O
which	O
is	O
based	O
on	O
the	O
open-source	B-Application
Common	O
Unix	B-Operating_System
Printing	O
System	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
software	O
bundled	O
with	O
OS/2	B-Application
Warp	O
4	O
,	O
ArcaOS	B-Device
includes	O
some	O
additional	O
software	O
,	O
such	O
as	O
:	O
</s>
<s>
ArcaOS	B-Device
includes	O
a	O
number	O
of	O
software	O
components	O
which	O
allow	O
it	O
to	O
directly	O
run	O
software	O
developed	O
for	O
other	O
operating	B-General_Concept
systems	I-General_Concept
,	O
and	O
to	O
simplify	O
the	O
process	O
of	O
porting	O
software	O
to	O
ArcaOS	B-Device
:	O
</s>
<s>
ArcaOS	B-Device
includes	O
OS/2	B-Application
'	O
s	O
MVDM	O
and	O
WIN-OS/2	B-Application
,	O
allowing	O
ArcaOS	B-Device
to	O
run	O
16-bit	O
MS-DOS	B-Application
and	O
Windows	B-Application
3.1	I-Application
applications	O
natively	O
.	O
</s>
<s>
ArcaOS	B-Device
features	O
some	O
improvements	O
to	O
these	O
subsystems	O
which	O
are	O
not	O
found	O
in	O
OS/2	B-Application
,	O
such	O
as	O
the	O
ability	O
to	O
access	O
volumes	O
greater	O
than	O
2GB	O
from	O
Windows	O
and	O
DOS	O
,	O
as	O
well	O
as	O
ongoing	O
work	O
which	O
will	O
allow	O
16-bit	B-Library
Windows	I-Library
and	O
DOS	O
software	O
to	O
run	O
on	O
UEFI	B-Architecture
systems	O
which	O
do	O
not	O
have	O
a	O
traditional	O
BIOS	B-Operating_System
.	O
</s>
<s>
ArcaOS	B-Device
includes	O
Odin	B-General_Concept
,	O
based	O
on	O
Wine	B-Application
,	O
which	O
provides	O
a	O
subset	O
of	O
the	O
Win32	B-Library
API	I-Library
.	O
</s>
<s>
Odin	B-General_Concept
can	O
be	O
used	O
to	O
run	O
certain	O
Win32	B-Library
applications	O
directly	O
,	O
while	O
other	O
applications	O
,	O
such	O
as	O
the	O
OS/2	B-Application
port	O
of	O
OpenJDK	B-Language
,	O
use	O
the	O
Odin	B-General_Concept
API	O
to	O
simplify	O
porting	O
Windows	O
software	O
to	O
OS/2	B-Application
.	O
</s>
<s>
ArcaOS	B-Device
provides	O
a	O
Unix	B-Operating_System
compatibility	O
layer	O
named	O
kLIBC	O
which	O
facilitates	O
the	O
porting	O
of	O
open	O
source	O
Linux	B-Operating_System
applications	O
to	O
ArcaOS	B-Device
.	O
</s>
<s>
A	O
variety	O
of	O
Linux	B-Operating_System
tools	O
ship	O
with	O
ArcaOS	B-Device
such	O
as	O
the	O
Bash	B-Operating_System
shell	I-Operating_System
and	O
the	O
GNU	B-Application
coreutils	I-Application
,	O
while	O
others	O
are	O
available	O
through	O
the	O
ArcaOS	B-Device
package	O
manager	O
,	O
such	O
as	O
GCC	B-Application
.	O
</s>
<s>
A	O
port	O
of	O
OpenJDK	B-Language
is	O
included	O
,	O
which	O
allows	O
ArcaOS	B-Device
to	O
run	O
Java	B-Language
applications	O
which	O
do	O
not	O
have	O
platform-specific	O
dependencies	O
.	O
</s>
<s>
ArcaOS	B-Device
's	O
default	O
filesystem	B-Application
is	O
JFS	B-Application
,	O
although	O
HPFS	B-Application
is	O
also	O
supported	O
for	O
backwards	O
compatibility	O
.	O
</s>
<s>
ArcaOS	B-Device
may	O
be	O
installed	O
to	O
and	O
booted	O
from	O
either	O
filesystem	B-Application
.	O
</s>
<s>
FAT12	O
,	O
FAT16	O
,	O
and	O
FAT32	O
are	O
also	O
supported	O
using	O
either	O
the	O
OS/2	B-Application
kernel	B-Operating_System
's	O
own	O
FAT	B-Application
driver	O
,	O
or	O
a	O
new	O
Arca	O
Noae-developed	O
FAT32	O
IFS	B-Application
driver	O
,	O
included	O
in	O
ArcaOS	B-Device
since	O
version	O
5.0.3	O
.	O
</s>
<s>
ArcaOS	B-Device
includes	O
support	O
for	O
optical	B-Device
disc	I-Device
filesystems	B-Application
such	O
as	O
ISO	B-Application
9660	I-Application
and	O
UDF	O
.	O
</s>
<s>
ArcaOS	B-Device
supports	O
serving	O
and	O
accessing	O
CIFS/SMB	B-Operating_System
shares	O
using	O
the	O
open	O
source	O
Samba	B-Language
project	O
,	O
and	O
provides	O
a	O
graphical	O
utility	O
named	O
ArcaMapper	O
to	O
manage	O
configuration	O
.	O
</s>
<s>
NetDrive	O
for	O
OS/2	B-Application
provides	O
access	O
to	O
a	O
variety	O
of	O
additional	O
filesystems	B-Application
such	O
as	O
NTFS	B-Application
and	O
NFS	B-Protocol
via	O
its	O
own	O
IFS	B-Application
driver	O
.	O
</s>
<s>
The	O
ArcaOS	B-Device
distribution	O
includes	O
a	O
limited	O
license	O
version	O
of	O
NetDrive	O
but	O
the	O
fully	O
licensed	O
version	O
is	O
capable	O
of	O
mounting	O
a	O
number	O
of	O
other	O
local	O
,	O
native	O
,	O
and	O
foreign	O
file	B-Application
systems	I-Application
.	O
</s>
<s>
ArcaOS	B-Device
features	O
a	O
new	O
graphical	O
installer	O
which	O
replaces	O
the	O
IBM	O
installer	O
used	O
in	O
OS/2	B-Application
Warp	O
.	O
</s>
<s>
Unlike	O
OS/2	B-Application
,	O
the	O
ArcaOS	B-Device
installation	O
process	O
does	O
not	O
require	O
a	O
boot	O
floppy	O
,	O
and	O
instead	O
the	O
installer	O
can	O
be	O
booted	O
directly	O
from	O
optical	B-Device
media	I-Device
,	O
or	O
from	O
a	O
USB	O
flash	O
drive	O
.	O
</s>
<s>
The	O
installer	O
also	O
provides	O
an	O
update	O
facility	O
,	O
which	O
allows	O
ArcaOS	B-Device
to	O
be	O
updated	O
to	O
the	O
latest	O
release	O
without	O
reinstalling	O
the	O
entire	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Installation	O
and	O
updates	O
of	O
individual	O
software	O
packages	O
is	O
provided	O
through	O
the	O
Arca	B-Device
Noae	I-Device
Package	O
Manager	O
(	O
ANPM	O
)	O
,	O
which	O
consists	O
of	O
a	O
native	O
OS/2	B-Application
graphical	O
frontend	O
on	O
top	O
of	O
RPM	B-Application
and	O
YUM	B-Application
.	O
</s>
<s>
Software	O
is	O
provided	O
through	O
a	O
mixture	O
of	O
freely	O
available	O
,	O
and	O
subscription	O
only	O
RPM	B-Application
repositories	O
.	O
</s>
<s>
The	O
minimum	O
hardware	O
requirements	O
for	O
ArcaOS	B-Device
5.0	I-Device
is	O
as	O
follows	O
:	O
</s>
<s>
ArcaOS	B-Device
was	O
formally	O
announced	O
on	O
October	O
23	O
,	O
2015	O
,	O
at	O
the	O
Warpstock	O
2015	O
event	O
(	O
an	O
OS/2	B-Application
user	O
group	O
event	O
)	O
under	O
the	O
code	O
name	O
"	O
Blue	O
Lion	O
"	O
by	O
Arca	B-Device
Noae	I-Device
's	O
Managing	O
Member	O
,	O
Lewis	O
Rosenthal	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
the	O
announcement	O
,	O
the	O
initial	O
release	O
was	O
projected	O
for	O
late	O
third	O
quarter	O
of	O
2016	O
,	O
but	O
Arca	B-Device
Noae	I-Device
also	O
stated	O
that	O
no	O
actual	O
release	O
date	O
had	O
been	O
set	O
.	O
</s>
<s>
The	O
name	O
"	O
ArcaOS	B-Device
"	O
was	O
first	O
published	O
in	O
a	O
TechRepublic	O
article	O
on	O
May	O
26	O
,	O
2016	O
,	O
while	O
the	O
arcaos.com	O
domain	O
was	O
registered	O
December	O
20	O
,	O
2015	O
.	O
</s>
<s>
In	O
the	O
same	O
TechRepublic	O
article	O
,	O
Lewis	O
Rosenthal	O
was	O
quoted	O
as	O
saying	O
that	O
the	O
first	O
release	O
of	O
ArcaOS	B-Device
would	O
be	O
version	O
5.0	O
,	O
as	O
it	O
follows	O
onto	O
the	O
last	O
release	O
of	O
OS/2	B-Application
Warp	O
from	O
IBM	O
,	O
which	O
was	O
4.52	O
(	O
also	O
known	O
as	O
Merlin	O
Convenience	O
Pack	O
2	O
,	O
or	O
MCP2	O
)	O
.	O
</s>
<s>
ArcaOS	B-Device
5.0	I-Device
was	O
released	O
May	O
15	O
,	O
2017	O
.	O
</s>
<s>
ArcaOS	B-Device
5.0	I-Device
was	O
followed	O
by	O
a	O
number	O
of	O
maintenance	O
releases	O
between	O
2017	O
and	O
2021	O
.	O
</s>
<s>
During	O
Warpstock	O
2021	O
,	O
Arca	B-Device
Noae	I-Device
announced	O
that	O
5.0.7	O
would	O
be	O
the	O
final	O
maintenance	O
release	O
of	O
5.0	O
,	O
and	O
that	O
it	O
would	O
be	O
followed	O
by	O
the	O
5.1	O
release	O
.	O
</s>
<s>
Prior	O
to	O
the	O
release	O
of	O
ArcaOS	B-Device
5.0	I-Device
,	O
ArcaOS	B-Device
5.1	O
was	O
originally	O
planned	O
for	O
release	O
in	O
2017	O
with	O
a	O
focus	O
on	O
supporting	O
other	O
languages	O
including	O
French	O
,	O
Spanish	O
,	O
Italian	O
,	O
German	O
,	O
and	O
Dutch	O
.	O
</s>
<s>
Following	O
the	O
release	O
of	O
ArcaOS	B-Device
5.0	I-Device
,	O
Arca	B-Device
Noae	I-Device
began	O
discussing	O
a	O
5.1	O
release	O
in	O
their	O
roadmaps	O
,	O
along	O
with	O
proposed	O
new	O
features	O
.	O
</s>
<s>
During	O
Warpstock	O
2020	O
,	O
Arca	B-Device
Noae	I-Device
announced	O
that	O
5.1	O
is	O
expected	O
to	O
be	O
released	O
during	O
2021	O
.	O
</s>
<s>
Support	O
for	O
booting	O
on	O
UEFI-only	O
systems	O
without	O
a	O
Compatibility	O
Support	O
Module	O
(	O
CSM	O
)	O
.	O
</s>
<s>
This	O
involves	O
providing	O
emulation	O
of	O
specific	O
BIOS	B-Operating_System
functionality	O
which	O
the	O
operating	B-General_Concept
system	I-General_Concept
depends	O
on	O
(	O
particularly	O
interrupts	O
INT	B-Device
10H	I-Device
and	O
INT	B-Device
13H	I-Device
)	O
.	O
</s>
<s>
As	O
of	O
2020	O
,	O
Arca	B-Device
Noae	I-Device
have	O
demonstrated	O
the	O
installation	O
of	O
ArcaOS	B-Device
onto	O
a	O
UEFI	B-Architecture
system	O
,	O
and	O
booting	O
with	O
the	O
CSM	O
disabled	O
.	O
</s>
<s>
Support	O
for	O
disks	O
using	O
GUID	B-Application
partition	I-Application
tables	I-Application
(	O
GPT	O
)	O
is	O
under	O
development	O
,	O
which	O
will	O
allow	O
disks	O
larger	O
than	O
2TB	O
to	O
be	O
supported	O
.	O
</s>
<s>
Localized	O
releases	O
of	O
ArcaOS	B-Device
,	O
known	O
as	O
National	O
Language	O
Versions	O
(	O
NLV	O
)	O
.	O
</s>
<s>
This	O
involves	O
augmenting	O
the	O
localization	O
in	O
OS/2	B-Application
Warp	O
4	O
with	O
translations	O
for	O
the	O
new	O
software	O
added	O
in	O
ArcaOS	B-Device
,	O
such	O
as	O
the	O
installer	O
and	O
XWorkplace	O
.	O
</s>
<s>
An	O
upgrade	O
facility	O
to	O
allow	O
in-place	O
migration	O
of	O
ArcaOS	B-Device
5.0	I-Device
to	O
5.1	O
without	O
reinstalling	O
the	O
entire	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
A	O
migration	O
facility	O
to	O
allow	O
in-place	O
migration	O
of	O
OS/2	B-Application
Warp	O
4	O
and	O
eComStation	B-Device
systems	O
to	O
ArcaOS	B-Device
without	O
removing	O
the	O
existing	O
operating	B-General_Concept
system	I-General_Concept
installation	O
first	O
.	O
</s>
<s>
Desktop	B-Application
search	I-Application
functionality	O
based	O
on	O
the	O
open-source	B-Application
Recoll	B-Language
project	O
.	O
</s>
<s>
New	O
device	B-Application
drivers	I-Application
,	O
particularly	O
support	O
for	O
NVMe	B-Application
drives	O
.	O
</s>
<s>
The	O
OS/2	B-Application
software	O
vendor	O
Bitwise	O
Works	O
is	O
porting	O
QtWebEngine	O
(	O
based	O
on	O
Chromium	B-Language
)	O
to	O
OS/2	B-Application
and	O
ArcaOS	B-Device
in	O
order	O
to	O
support	O
a	O
new	O
browser	O
to	O
replace	O
Firefox	B-Application
.	O
</s>
<s>
This	O
has	O
been	O
prompted	O
by	O
the	O
increasing	O
complexity	O
of	O
the	O
Firefox	B-Application
codebase	O
,	O
and	O
use	O
of	O
the	O
Rust	B-Application
programming	I-Application
language	I-Application
in	O
newer	O
versions	O
of	O
Firefox	B-Application
-	O
whose	O
compiler	O
is	O
unlikely	O
to	O
ever	O
be	O
supported	O
on	O
the	O
OS/2	B-Application
platform	O
.	O
</s>
<s>
During	O
Warpstock	O
2020	O
,	O
a	O
demo	O
was	O
carried	O
out	O
which	O
showed	O
the	O
Qt	B-Language
WebEngine	O
Demo	O
Browser	O
running	O
on	O
ArcaOS	B-Device
and	O
successfully	O
loading	O
modern	O
web	O
pages	O
.	O
</s>
<s>
Originally	O
the	O
Falkon	B-Protocol
browser	O
had	O
been	O
considered	O
for	O
porting	O
to	O
the	O
OS/2	B-Application
platform	O
,	O
but	O
it	O
has	O
since	O
been	O
discounted	O
due	O
to	O
Falkon	B-Protocol
's	O
dependency	O
on	O
libraries	O
from	O
the	O
KDE	B-Language
Frameworks	I-Language
.	O
</s>
<s>
As	O
a	O
result	O
,	O
the	O
Otter	B-Language
Browser	I-Language
is	O
being	O
considered	O
instead	O
.	O
</s>
<s>
The	O
new	O
web	O
browser	O
will	O
be	O
added	O
to	O
the	O
ArcaOS	B-Device
5.1	O
release	O
series	O
once	O
it	O
is	O
complete	O
.	O
</s>
