>8GB, how to get DOS to see it ???
Tom Clarke
I just got a pair of 40GB drives. How do I get either MS DOS 5, IBM
PC DOS 7 or DrDOS 7.03 to see more than 8GB?? Thanks!!
Osmo Vuorio
> I just got a pair of 40GB drives. How do I get either MS DOS 5, IBM
>PC DOS 7 or DrDOS 7.03 to see more than 8GB?? Thanks!!
Dos5/6 doesn't - Int13h. But since the Win95B.. Dos7.x and extended
partition type byte 0F - yes.
Osmo
Karl Brunell
You can overcome the DOS 8.4 limitation with special software called
OnTrackManager. It is provided free by the maker of the HDD. Go to the
maker's website and look for something by that name or similar.(EasyDrive
for WesternDigital, MaxBlast for Maxtor, DiskGo for Fuji, DiskWizard by
Seagate.)
Another possibility is a motherboard with a BIOS supporting very large
drives, but these are rare or an add-on board supplanting the mboard's BIOS
By the way, there is another DOS limitation which limits partition size to
2Mb. Windows gets around these limits by using FAT32.
Karl
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Tom Clarke
Thanks. I knew about the 2GB limit and that's fine. MaxBlast and
the
others are used when your BIOS can't see the drive which mine can. If
the drive is completely empty, DOS fdisk says it's an 8GB drive. Win98
knows better, but if I use WIN98 to partition the drive, DOS won't see
the extended partition if it goes past the 8GB limit. Even if the
logical partitions are defined FAT16 and less than 2GB DOS can't see
them. All I can do now is to create a 2GB primary partition on each
drive using DOS's fdisk and then WIN98 to define the extended partition
or throw away 32GB on the drives. Not acceptable. What I'd like is to
get DOS to see the extended partition and be able to use any logical
partitions defined as FAT16 and <2GB. If I use Partition Magic to define
the partitions would that work ??? Thanks again....
Tom
Martin Stromberg
: Karl,
:
: Thanks. I knew about the 2GB limit and that's fine. MaxBlast and
: the
: others are used when your BIOS can't see the drive which mine can. If
: the drive is completely empty, DOS fdisk says it's an 8GB drive. Win98
: knows better, but if I use WIN98 to partition the drive, DOS won't see
: the extended partition if it goes past the 8GB limit. Even if the
: logical partitions are defined FAT16 and less than 2GB DOS can't see
: them. All I can do now is to create a 2GB primary partition on each
: drive using DOS's fdisk and then WIN98 to define the extended partition
: or throw away 32GB on the drives. Not acceptable. What I'd like is to
: get DOS to see the extended partition and be able to use any logical
: partitions defined as FAT16 and <2GB. If I use Partition Magic to define
: the partitions would that work ??? Thanks again....
You need to use DOZE 7.1 or later (comes with WINDOZE 95B and up until
WINDOZE 98SE).
Right,
MartinS
Osmo Vuorio
>them. All I can do now is to create a 2GB primary partition on each
>drive using DOS's fdisk and then WIN98 to define the extended partition
>or throw away 32GB on the drives. Not acceptable. What I'd like is to
>get DOS to see the extended partition and be able to use any logical
>partitions defined as FAT16 and <2GB. If I use Partition Magic to define
>the partitions would that work ??? Thanks again....
The trouble here is the extended partition type byte 0F, Nogo with
Dos5/6.xx, and not even with win95b/98/98SE command line dos Dos7.x.
The bios history did start with 2+8 bit cylinder number, the Int13h.
Osmo
Osmo Vuorio
>
>The trouble here is the extended partition type byte 0F, Nogo with
>Dos5/6.xx, and not even with win95b/98/98SE command line dos Dos7.x.
if/when the extended partition type byte 0F is changed back to 05h.
Osmo
Martin Str|mberg
: In article <4Mjb6.407$wJ.1...@read2.inet.fi>, osmo....@sonera.fi says...
:>
:>The trouble here is the extended partition type byte 0F, Nogo with
:>Dos5/6.xx, and not even with win95b/98/98SE command line dos Dos7.x.
: if/when the extended partition type byte 0F is changed back to 05h.
Why would you want to change 0xf to 0x5. Partitions of type 0x5 can't
exceed 8GB by definition (at least in *DOZE).
Right,
MartinS
Karl Brunell
I don't know about Partition Magic, never used it; some swear by it and
others swear at it. I do know that it will work in WIN but I don't know
whether it'll work in DOS.
Way back when... the first drives came out which exceeded the DOS 585Mb
limit (they went all the way up to 800Mb) I bought an add-on board made by
GSI (www.GSI-Inc.com) which worked great, until the monster drives started
to to arrive. Haven't checked for GSI lately, but I always thought it a
better solution than software emulating a BIOS, riding on the disk.
Also I've had trouble with drives the BIOS could see but could not handle;
has to do with whether INT 13 is available in the BIOS or not.
Anyway, I prefer hardware solutions when they are available; as the famous
man said about his enemies and friends: Our hardware we know how to deal
with, but may the Lord protect as from our software.
Karl
Tom Clarke
I know it isn't the hardware/BIOS that's causing the problem. WIN98
can see and access the entire drive. My problem is that DOS will NOT see
anything that goes past the 8GB limit. If I partition using WIN98 I get
to create an extended partition to include the entire drive after the
primary partitions in which I installed the OSes. I can then create
logical partitions within the extended partition and even if I create
them FAT16 and <2GB DOS won't see them because it won't acknowledge the
extended partition exists since that goes past the 8GB limit.
Is there any way to install JUST DOS from a WIN98 CD ?? If I could
do that maybe their DOS could see the extended partition. It's just that
I've got a couple of games that I want to keep that WILL NOT run under
WINDOZE of any flavor (I've tried them on friends WIN95, WIN98 and WinNT
4 systems and the only way to run them was from a boot disk), so I
install DOS for them and that's fine. I'd just like for all my OSes to
be able to see the whole hard drive. I intend to assign, using
PowerBoot, certain partitions to each OS and those will be the only ones
that particular OS will know exist. Right now, I'm stuck with DOS since
it can't see logical partitions so I'd have to use primaries, one on
each drive, and that screws up having a partition all systems can see.
Thanks.
Tom
Martin Stromberg
: Is there any way to install JUST DOS from a WIN98 CD ?? If I could
Yes. Add the line "BootGUI=0" to C:/MSDOS.SYS (see
<http://www.annoyances.org/cgi-bin/ce-showtopic/005_021>).
Right,
MartinS
Felix Miata
> I know it isn't the hardware/BIOS that's causing the problem. WIN98
> can see and access the entire drive. My problem is that DOS will NOT see
Which DOS? MS-DOS 7.1 can see it all.
> anything that goes past the 8GB limit. If I partition using WIN98 I get
> to create an extended partition to include the entire drive after the
> primary partitions in which I installed the OSes. I can then create
> logical partitions within the extended partition and even if I create
> them FAT16 and <2GB DOS won't see them because it won't acknowledge the
> extended partition exists since that goes past the 8GB limit.
This is because on large drives (>8Gb) WinDOS 7.1 (windoze) uses
extended partition type 0Fh instead of the standard type 05h. Pre-7.1
MS-DOS and PC-DOS and OS/2 think type 0Fh is foreign and refuse to
acknowledge the existence of anything contained within.
> Is there any way to install JUST DOS from a WIN98 CD ?? If I could
You don't need to. All you need to do is configure WinDOS to not
automatically start windoze when you boot. Two crude ways to do this
include modifying MSDOS.SYS with one or the other of the following:
BootGUI=0
or
BootMenuEnabled=1
The former will never start windoze, requiring you to start it by
entering the WIN command. The latter is the normal windoze menu you see
when windoze didn't get shutdown properly and wants you to choose safe
mode.
Ideally, you create a CONFIG.SYS with menus so that you can choose the
boot type at each instance.
> do that maybe their DOS could see the extended partition. It's just that
> I've got a couple of games that I want to keep that WILL NOT run under
> WINDOZE of any flavor (I've tried them on friends WIN95, WIN98 and WinNT
> 4 systems and the only way to run them was from a boot disk), so I
If the boot disk used is for Win98 it means WinDOS can work the games
just fine. You just need to properly configure.
> install DOS for them and that's fine. I'd just like for all my OSes to
> be able to see the whole hard drive. I intend to assign, using
> PowerBoot, certain partitions to each OS and those will be the only ones
> that particular OS will know exist. Right now, I'm stuck with DOS since
> it can't see logical partitions so I'd have to use primaries, one on
> each drive, and that screws up having a partition all systems can see.
Unless PowerBoot is capable of switching the extended partition type
according to the OS chosen for boot, it won't help with your problem.
--
He who pursues righteousness and love finds life, prosperity, and
honor. Proverbs 21:21 NKJV
Team OS/2
Felix Miata *** http://mrmazda.members.atlantic.net