NTFS partition Info - Partition table.

NTFSD
1

Hi,
I am reading the MBR and the Partition table. The details abt the basic
partitions are found correctly as expected.

The extended parition is a NTFS partition(with 4 logical drives 3 NTFS and
one FAT32). When i jump to the starting CHS of the extended partition and
read that sector(which is expected to be a partition table of the extended
partion), i do not get the partition info.

Can anyone correct me, if my approach is wrong. Also would anyone tell me
where exactly is the Extended partition’s partition table found. Does, NTFS
go out of way and wirte its own partition table.

Any information would be really useful.
with regards,
Venkat Raghavulu A.R
Zensar Technologies. Ltd,
Nagar Road,
Pune - 411 014. India.
Ph: 020-6632102/3/4-extn 513

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2

Hi,
I used the CHS to LBA translation, which was same, as that of the value in
the partition table (1D6 to 1D9).
LBA = ( (cylinder * heads_per_cylinder + heads ) * sectors_per_track ) +
sector - 1, to obtain the bytes to be moved and used SetFilePointer().
Venkat

Hi,
I am reading the MBR and the Partition table. The details abt the basic
partitions are found correctly as expected.

The extended parition is a NTFS partition(with 4 logical drives 3 NTFS and
one FAT32). When i jump to the starting CHS of the extended partition and
read that sector(which is expected to be a partition table of the extended
partion), i do not get the partition info.

Can anyone correct me, if my approach is wrong. Also would anyone tell me
where exactly is the Extended partition’s partition table found. Does, NTFS
go out of way and wirte its own partition table.

Any information would be really useful.
with regards,
Venkat Raghavulu A.R
Zensar Technologies. Ltd,
Nagar Road,
Pune - 411 014. India.
Ph: 020-6632102/3/4-extn 513
"

ZenSar Technologies Ltd. Mail Disclaimer: This e-mail and any files
transmitted with it are confidential and the views expressed in the same are
not necessarily the views of ZenSar Technologies Ltd., and its Directors,
Management or Employees. This communication represents the originator’s
personal views and opinions. If you are not the intended recipient or the
person responsible for delivering the e-mail to the intended recipient, be
advised that you have received this e-mail by error, and that any use,
dissemination, forwarding, printing, or copying of this e-mail is strictly
prohibited. You shall be under obligation to keep the contents of this
e-mail, strictly confidential and shall not disclose, disseminate or divulge
the same to any Person, Company, Firm or Entity. Please ensure you have
adequate virus protection before you open or detach any documents from this
transmission. ZenSar Technologies Ltd. does not accept any liability for
viruses. If you received this e-mail in error, please immediately notify
xxxxx@zensar.com. The rights to monitor all e-mail communication
through our network are reserved with us.

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3

Use IOCTL_GET_DRIVE_LAYOUT instead.

Max

----- Original Message -----
From: Venkat Raghavulu
To: File Systems Developers
Sent: Thursday, September 26, 2002 10:03 AM
Subject: [ntfsd] NTFS partition Info - Partition table.

Hi,
I am reading the MBR and the Partition table. The details abt the basic partitions are found correctly as expected.

The extended parition is a NTFS partition(with 4 logical drives 3 NTFS and one FAT32). When i jump to the starting CHS of the extended partition and read that sector(which is expected to be a partition table of the extended partion), i do not get the partition info.

Can anyone correct me, if my approach is wrong. Also would anyone tell me where exactly is the Extended partition’s partition table found. Does, NTFS go out of way and wirte its own partition table.

Any information would be really useful.
with regards,
Venkat Raghavulu A.R
Zensar Technologies. Ltd,
Nagar Road,
Pune - 411 014. India.
Ph: 020-6632102/3/4-extn 513

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ZenSar Technologies Ltd. Mail Disclaimer: This e-mail and any files transmitted with it are confidential and the views expressed in the same are not necessarily the views of ZenSar Technologies Ltd., and its directors, management or employees. This communication represents the originator’s personal views and opinions. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, be advised that you have received this e-mail by error, and that any use, dissemination, forwarding, printing, or copying of this e-mail is strictly prohibited. You shall be under obligation to keep the contents of this e-mail, strictly confidential and shall not disclose, disseminate or divulge the same to any Person, Company, Firm or Entity. Please ensure you have adequate virus protection before you open or detach any documents from this transmission. ZenSar Technologies Ltd. does not accept any liability for viruses. If you received this e-mail in error, please immediately notify xxxxx@zensar.com. The rights to monitor all e-mail communication through our network are reserved with us.

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