Hi Johnson,
Could be a number of things, but in general you'd never put FreeDOS on a
RAID 5 partition of 140Gb.
If you were building the server, or wanted a utility partition, it would
usually be on a mirror of the first two physical disks, and would not
need to be more than 4Gb. Under hardware RAID, the MBR would be
automatically written to both disks with FreeDOS FDISK /MBR. If you use
brand new disks, and have never used MS-DOS FDISK or other tools, I
don't think FreeDOS will create an MBR boot program until you tell it to.
I don't even put Windows on RAID 5 at 140GB, it goes on RAID 1 at about
14Gb, but during textmode setup I use a 2Gb FAT16 or FAT32 partition
which gets converted to NTFS after setup.
Once you have an o/s installed, you can use a RAID 5 through the SCSI
driver with very large partitions. Under Windows you'd set the RAID 5 as
a "dynamic" disk, this is a non-bootable type of disk that knows nothing
about traditional DOS partitions, but supports on-line expansion of the
Array.
If you did not use a SCSI driver in your setup, it will depend on what
the BIOS wants you to see, and most BIOSs will only address the first
8Gb. Strangely, Dell latest BIOS's seem to be able to address large SCSI
partitions without drivers, but I don't know how.
Johnson Lam wrote:
Dear All,
Yesterday I'm lucky that I got a IBM eServer to play with, and
suddenly a flash on my mind ... why don't I try FreeDOS on it?
So I got the dual SCSI RAID-5 ready and install FreeDOS, and I found
that Free FDISK failed, it can create the partition, FORMAT and SYS,
but failed to boot, I've tried to switch FreeCOM but won't work.
Finally I got no choice but Win98 FDISK (only create partition), it
works but the size was down to 8GB only, then FORMAT with FreeDOS
FORMAT and SYS, the 140GB Array finally boot up, but only can use 8GB
disk space.
I've created a "compatibility" page on my homepage, and got some
photos (because I always forget the numbers), please take a look how
FreeDOS "reacts" in the IBM eServer with a 140GB SCSI Array.
P.S.: Jeremy, you site is down. I want to test the latest FDISK 1.3.0
but seems have to wait. The FDISK 1.2.1-k report "fail to read sector
0x?" when I run it, and after I make the drive bootable, running
1.2.1-k again will destroy all partition information, I notice it
"Write MBR to 0x80" when exit".
Rgds,
Johnson.
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