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Home > Archive > Red Hat Installation > November 2004 > Partitioning a reformatted Maxtor 91000D8 (9539 MB) recognizes only 2008 MB
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Partitioning a reformatted Maxtor 91000D8 (9539 MB) recognizes only 2008 MB
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| Sid Pollock 2004-11-11, 2:47 am |
| I am attempting to install RedHat Linux 8.0 on a completely reformatted 2nd
harddisk (hdb) that (under Windows XP) showed as a 9539 MB formatted drive.
It is a Maxtor 91000D8.
Prior to attempting to install Linux on this 2nd drive, I partitioned and
formatted it
under Windows XP as a FAT32 drive.
When I come to the choices of doing it Automatically, Manually, or via
FDISK, each approach states that the drive needs to be reformatted because
it is unreadable.
That's fine. I select the radio button to repartition the disk. After that,
the disk reports that it is only 2008 MB in size.
How can I get the installation step to recognize the much larger free space
of 9539 MB?
The CHS reported in the BIOS for this drive is 767/128/63.
The LINUX installer reports that the CHS is is 256/255/63.
The disk is good. Until yesterday, I had been using it as a second drive for
Windows XP
and it was 95% full at a maximum size of 9539 MB.
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| Eric Moors 2004-11-11, 7:47 am |
| > How can I get the installation step to recognize the much larger free
> space of 9539 MB?
report the right CHS values to the kernel
(check google on how to do this)
> The CHS reported in the BIOS for this drive is 767/128/63.
that is about 3G
> The LINUX installer reports that the CHS is is 256/255/63.
which is a bit less (almost 2G)
> The disk is good. Until yesterday, I had been using it as a second drive
> for Windows XP
> and it was 95% full at a maximum size of 9539 MB.
on this machine?
Eric
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| Douglas Mayne 2004-11-11, 8:46 pm |
| On Wed, 10 Nov 2004 23:02:56 -0500, Sid Pollock wrote:
> I am attempting to install RedHat Linux 8.0 on a completely reformatted 2nd
> harddisk (hdb) that (under Windows XP) showed as a 9539 MB formatted drive.
> It is a Maxtor 91000D8.
>
> Prior to attempting to install Linux on this 2nd drive, I partitioned and
> formatted it
> under Windows XP as a FAT32 drive.
>
> When I come to the choices of doing it Automatically, Manually, or via
> FDISK, each approach states that the drive needs to be reformatted because
> it is unreadable.
>
> That's fine. I select the radio button to repartition the disk. After that,
> the disk reports that it is only 2008 MB in size.
>
> How can I get the installation step to recognize the much larger free space
> of 9539 MB?
>
> The CHS reported in the BIOS for this drive is 767/128/63.
> The LINUX installer reports that the CHS is is 256/255/63.
>
> The disk is good. Until yesterday, I had been using it as a second drive for
> Windows XP
> and it was 95% full at a maximum size of 9539 MB.
>
Because the second drive is to be used entirely for linux, you should be
able to get this working quickly and without extra complications due to
dual boot issues (partition table mismatches.)
Assuming you have an ide hard drive connected to a recent motherboard, go
into BIOS setup and specify LBA mode. The BIOS setup program on most PCs
allow for "autodetection" of the hard drives which are found and the
parmeters which are being used. You want autodect and LBA. If this is a
very old motherboard which has an "8G limit," then you might have more
problems.
Assuming the BIOS is set to autodetect and LBA, you can begin
your setup for linux. First, you might need to zero your partition
tables before beginning. BTW, your existing format under XP is no good
(one reason is that FAT32 is not a native linux partition type, and the
another is that your "drive geometry" is different.)
NOTICE: BE CAREFUL to SPECIFY the CORRECT DRIVE (this will destroy
your existing partition table on the specified drive)!
From a rescue CD (and substituting the correct letter for your
drive):
fdisk /dev/hdb
command (m for help): o
command (m for help): w
At this point, you should be able to begin your setup (from the setup CD.)
--
Lou: You gonna order something, kid?
http://www.xmission.com/~ddmayne/misc/bttf.html
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| Sid Pollock 2004-11-13, 2:47 am |
| I want to thank all of you for your suggestions.
As it turns out, when I was using the drive on the original
computer, the J50 jumper was jumped to Master. When I moved
the drive over to a second computer to be the slave disk,
I removed the J50 Master jumper and placed the jumper on
the 3rd pair of pins (J46) to designate it as the slave.
Wrong!
The Maxtor web sites identified this 3rd jumper (J46) as a
4092 Cyl Limitation. Apparently, even with this jumper
jumped, Windows XP sees the drive as 9539 MB but RedHat
Linux's anaconda does not.
Without the jumper and with the BIOS set to USER LBA, the
CHS became 1002/255/63 with a size of 10002 and anaconda
saw the drive as 9539 MB of free space.
Tada! I'm a happy camper.
Thanks again.
Sid
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