On Tue, 8 Jun 1999, Henry Ficher wrote:
Hi,
First of all, what you said doesn't apply at all for SCSI.
Second, a carefull reading of the mke2fs man page would have revealed
this:
-m reserved-blocks-percentage
Specify the percentage of reserved blocks for the
super-user. This value defaults to 5%.
Now, 5% of a 9.2GB disk results in: 460Mbytes
And this is exactly how much was missing from the drive when one did
`df'.
This is a common problem, I think it was even asked on this list once
or twice.
--Ariel
>
> Sorry to contradict you, Ariel, but some bioses DO have an 8.4GB limitation
> (not 8.3GB as I stated before) . Here's a quote from Western Digital's
> website (http://www.westerndigital.com/service/FAQ/8-4.html#1):
>
>
> "In order to properly support an 8.4 GB or larger IDE drive, your system's
> BIOS must be capable of supporting INT13 Extensions.At this writing, only
> a few BIOS's on some (but not all) new systems support these functions."
>
> The Large disk HOWTO also mentions BIOS problems:
>
> "11.1 BIOS complications
> As just mentioned, large disks return the geometry C=16383, H=16, S=63
> independent of the actual size, while the actual size is returned in the
> value of LBAcapacity. Some BIOSes do not recognize this, and translate this
> 16383/16/63 into something with fewer cylinders and more heads, for example
> 1024/255/63 or 1027/255/63. So, the kernel must not only recognize the
> single geometry 16383/16/63, but also all BIOS-mangled versions of it. Since
> 2.2.2 this is done correctly (by taking the BIOS idea of H and S, and
> computing C = capacity/(H*S)). Usually this problem is solved by setting the
> disk to Normal in the BIOS setup (or, even better, to None, not mentioning
> it at all to the BIOS). If that is impossible because you have to boot from
> it or use it also with DOS/Windows, and upgrading to 2.2.2 or later is not
> an option, use kernel boot parameters."
>
> All this refers to IDE drives, of course. I don't know about SCSI.
>
>
> I read the mke2fs man page but still can't see how it applies. Could you
> please explain how to figure out the right value for the reserved percentage
> for root? Or maybe give me an URL where to read about this?
>
>
> ----- Original Message -----
> From: Ariel Biener <[EMAIL PROTECTED]>
> To: Constantin Eizner <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Monday, June 07, 1999 8:36 PM
> Subject: Re: a small disk question
>
>
> > On Mon, 7 Jun 1999, Constantin Eizner wrote:
> >
> >
> > The problem is of course unrelated to BIOS, and only related to reserved
> > percentage for root (the default mke2fs is 5% AFAIK).
> >
> > I already sent a mail explaining what to do.
> >
> > --Ariel
> >
> > > the HOWTO about Linux IDE 8 GiB limit and *NOT* SCSI !
> > > Henry Ficher wrote:
> > >
> > > > Older BIOSes will not detect hard disk space over 8.3 GB. See the
> webpage of
> > > > your hard disk manufacturer for a solution to this. See also:
> > > >
> > > > http://www.ssc.com/linux/LDP/HOWTO/mini/Large-Disk-11.html
> > > >
> > > > ___________________
> > > > Henry Ficher
> > > > [EMAIL PROTECTED]
> > > > ICQ#: 7130104
> > > >
> > > > ----- Original Message -----
> > > > From: Hashibon Adham <[EMAIL PROTECTED]>
> > > > To: ILUG <[EMAIL PROTECTED]>
> > > > Sent: Monday, June 07, 1999 10:21 AM
> > > > Subject: a small disk question
> > > >
> > > > > Hi, once i installed linux RH5.1 on a system with a 9.2 scsi disk,
> every
> > > > > thing was allright (and the machine is still working great) except
> that
> > > > > 'df' shows arround 8.5GB ofdisk space, though i usedall of the disk
> for
> > > > > linux (it had no prior installation on it) so what's wrong!
> > > > >
> > > > > now i am gettinga new 10.2GB disk (ide), would i be able to use all
> the
> > > > > disk!
> > > > >
> > > > > Thanks in advance,
>
>
+---------------------------------------------------------------+
| Ariel Biener |
| e-mail: [EMAIL PROTECTED] Work phone: 03-6406086 |
| fingerprint = 07 D1 E5 3E EF 6D E5 82 0B E9 21 D4 3C 7D 8B BC |
+---------------------------------------------------------------+
