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Re: problem with partition table



In <[🔎] 2107b77c0909141723x1a0b93eexa0d9ed238a8ed307@mail.gmail.com>, Long Wind 
wrote:
>My /dev/sda has 6081 cylinders:
>sda1: cylinder 1 thru 600 for win2k
>sda2: cylinder 5401 thru 6081 for sarge
>sda3: cylinder 601 thru 4800 for a extended partition
>sda4: cylinder 4801 thru 5400 for etch
>
>etch use about 54% disk space

Note: that doesn't mean it uses the first 54% of the disk space.

>so I delete sda4 and recreate it at cylinder 5201 thru 5400
>then I install mandrake at sda4

Fine.

>Now I change sda4 to cylinder 4801 thru 5400
>and find etch is corrupted

Because the data on cylinders 5201 to 5400 is not as it expected.

However, as far as the file system is concerned those cylinders are still part 
of it, so it will happily write to them while trying to recover or just to 
update timestamps.

>then I change sda4 to cylinder 5201 thru 5400
>and find mandrake is corrupted too.

Yep, because you let etch muck with its data.

>Can anyone offer some explaination?

You broke it.
-- 
Boyd Stephen Smith Jr.                   ,= ,-_-. =.
bss@iguanasuicide.net                   ((_/)o o(\_))
ICQ: 514984 YM/AIM: DaTwinkDaddy         `-'(. .)`-'
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