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Re: Disk Geometries reported incorrectly on 2.6.0-testX
From: |
Sergey Vlasov |
Subject: |
Re: Disk Geometries reported incorrectly on 2.6.0-testX |
Date: |
Sun, 30 Nov 2003 12:35:41 +0300 |
User-agent: |
Pan/0.14.0 (I'm Being Nibbled to Death by Cats!) |
On Sat, 29 Nov 2003 23:14:24 +0100, Andries Brouwer wrote:
> On Sat, Nov 29, 2003 at 06:01:03PM +0100, Sven Luther wrote:
>
>> The only problem is that your BIOS will probably not be able
>> to boot from it
>
> You seem to misunderstand the boot sequence.
> The BIOS does not generally do any parsing of partition tables.
In theory, the BIOS does not need to look in the partition tables.
However, in practice it does this :(
Many BIOSes look at least at the partition table in the MBR to autodetect
the CHS parameters which were used when partitioning the disk. E.g. if
you partition a disk with LBA turned off in the BIOS (so the CHS
parameters will have 16 heads), then notice the mistake and turn LBA on,
in many cases BIOS will still show 16 heads in the CHS parameters.
However, after cleaning the MBR the same BIOS with the same settings will
report 255 heads.
Who knows what such BIOS will do if it will find something other than a
DOS partition table in the first sector...
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, (continued)
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andries Brouwer, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, John Bradford, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Stefan Smietanowski, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Sven Luther, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andries Brouwer, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Sven Luther, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andries Brouwer, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX,
Sergey Vlasov <=
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andrew Clausen, 2003/11/29
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Arjan van de Ven, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Szakacsits Szabolcs, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, John Bradford, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Sven Luther, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, John Bradford, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Sven Luther, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andrew Clausen, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andrew Clausen, 2003/11/30
- Re: Disk Geometries reported incorrectly on 2.6.0-testX, Andrew Clausen, 2003/11/29