Hello. I am not a hard drive expert and need some help in
understanding a few things.
First, what is the difference between fdisk and cfdisk,
other cfdisk being curses based?
Second, I have 2 Western Digital drives.
Both model WD400BB but they were manufactured about
6 months apart. I just bought the second one as I want
to try out Lucas' new Debian software Root on Raid howto.
I partioned both disk's exactly the same using cfdisk
during the install. It seems that one drive has 4863 cylinders
and the other has 77545 cylinders. Why would Western Digital
make the drives different? Or did I do something wrong
with partitioning/formatting?
Do the physical drives and partitions have to be EXACTLY the
same for RAID 1 to work properly or will the following
layouts of my drives be sufficient?
Here is the info from cfdisk and fdisk on both drives:
cfdisk /dev/hda:
cfdisk 2.11n
Disk Drive: /dev/hda
Size: 40000000000 bytes
Heads: 255 Sectors per Track: 63 Cylinders: 4863
Name Flags Part Type FS Type [Label] Size (MB)
-------------------------------------------------------------------------
hda1 Boot Primary Linux ext2 1003.49
hda2 Primary Linux ext2 3002.23
hda3 Primary Linux ext2 3002.23
hda5 Logical Linux swap 1003.49
hda6 Logical Linux ext2 3002.23
Logical Free Space 28985.89
then
cfdisk /dev/hdd
cfdisk 2.11n
Disk Drive: /dev/hdd
Size: 40020664320 bytes
Heads: 16 Sectors per Track: 63 Cylinders: 77545
Name Flags Part Type FS Type [Label] Size (MB)
-------------------------------------------------------------------------
hdd1 Boot Primary Linux ext2 1000.20
hdd2 Primary Linux ext2 3000.07
hdd3 Primary Linux ext2 3000.07
hdd5 Logical Linux swap 1000.20
hdd6 Logical Linux ext2 3000.07
Logical Free Space 29020.08
Now for fdisk:
fdisk /dev/hda
Command (m for help): p
Disk /dev/hda: 255 heads, 63 sectors, 4863 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 122 979933+ 83 Linux
/dev/hda2 123 487 2931862+ 83 Linux
/dev/hda3 488 852 2931862+ 83 Linux
/dev/hda4 853 1339 3911827+ 5 Extended
/dev/hda5 853 974 979933+ 82 Linux swap
/dev/hda6 975 1339 2931831 83 Linux
fdisk /dev/hdd
Command (m for help): p
Disk /dev/hdd: 16 heads, 63 sectors, 77545 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdd1 * 1 1938 976720+ 83 Linux
/dev/hdd2 1939 7751 2929752 83 Linux
/dev/hdd3 7752 13564 2929752 83 Linux
/dev/hdd4 13565 21315 3906504 5 Extended
/dev/hdd5 13565 15502 976720+ 82 Linux swap
/dev/hdd6 15503 21315 2929720+ 83 Linux
Thanks for any help.
-Andy
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
