Hi to all,
I downloaded 512mbsd-latest.dd from the ts ftp repository.
I then put a blank 2GB Kingston SD card in my USB reader and issued the
following command :
sudo dd if=/home/dev/downloads/ts7390/binaries/ts-images/512mbsd-latest.dd
of=/dev/sdc
After completion of the DD comand I invoke the following fdisk command
which produces the output below
:~$ sudo fdisk /dev/sdc
Command (m for help): p
Disk /dev/sdc: 1967 MB, 1967128576 bytes
61 heads, 62 sectors/track, 1015 cylinders
Units = cylinders of 3782 * 512 = 1936384 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 3 4096 c W95 FAT32 (LBA)
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(0, 8, 25) logical=(0, 8, 17)
Partition 1 has different physical/logical endings:
phys=(8, 14, 42) logical=(2, 18, 24)
Partition 1 does not end on cylinder boundary.
/dev/sdc2 3 4 2560 da Non-FS data
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(8, 14, 43) logical=(2, 18, 25)
Partition 2 has different physical/logical endings:
phys=(14, 2, 38) logical=(3, 39, 60)
Partition 2 does not end on cylinder boundary.
/dev/sdc3 5 6 1536 da Non-FS data
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(17, 4, 61) logical=(4, 28, 33)
Partition 3 has different physical/logical endings:
phys=(20, 7, 21) logical=(5, 17, 4)
Partition 3 does not end on cylinder boundary.
/dev/sdc4 7 251 460800 83 Linux
Partition 4 has different physical/logical beginnings (non-Linux?):
phys=(25, 11, 18) logical=(6, 38, 41)
Partition 4 has different physical/logical endings:
phys=(969, 15, 29) logical=(250, 19, 10)
Partition 4 does not end on cylinder boundary.
The "Speedy" card supplied as part of the ts-7390 Dev Kit shows just the
partitions and no physical/logical differance other than that the partition
does not end on a cylinder boundary.
Can somebody explain what this means? The SD card boots ok and all seems well
but when I make changes to linuxrc-nfsroot that increases the size of the file
and do a "save" it will not boot any more.
When I look at the partitions with cfdisk it shows unused space between the end
of a partition and the following partition, ie partitions are not contiguous.
Why is this so?
Is it possible to increase the size of partitions so that they occupy the whole
intended space ie (4 MB) for the Initrd partition and ensuring that each
partition starts at the right physical address. I want to be able to tweak the
"initrd" rootfs
Is it possible to extend individual partitions such that they are contiguous ie
reclaim the unused space between partitions?
Different SD vendors show a different Cylinder/Head/Sector geometry so I am
wondering if this is important as far as the above physical/logical message is
concerned and whether this should be changed?
Any clarification much appreciated.
Best regards,
Noel Diviney.
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