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SubjectDisappearing partition?
On one of the systems here (2.0.30) I noticed the following oddity. The
single hard disk (IDE) has 8 logical partitions (hda5-hda12) in one
extended partition (hda1). The kernel fails to report the existence of
hda12 at boot time, as does fdisk. However the partition can be mounted
and unmounted without any problems.

This isn't actually causing any problems. I guess there must be something
that limits the number of partitions the kernel looks for at boot time,
but I couldn't find anything in genhd.c.


Kernel messages at bootup:

ide: i82371 PIIX (Triton) on PCI bus 0 function 57
ide0: BM-DMA at 0x9000-0x9007
ide1: BM-DMA at 0x9008-0x900f
hda: FUJITSU M1623TAU, 1623MB w/128kB Cache, LBA, CHS=824/64/63, DMA
hdb: CRD-8160B, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Partition check:
hda:Started kswapd v 1.4.2.2
hda1 < hda5 hda6 hda7 hda8 hda9 hda10 hda11 >

Output from fdisk print partition table:

Disk /dev/hda: 64 heads, 63 sectors, 824 cylinders
Units = cylinders of 4032 * 512 bytes
Device Boot Begin Start End Blocks Id System
/dev/hda1 1 1 824 1661152+ 5 Extended
/dev/hda5 1 1 8 16065 83 Linux native
/dev/hda6 9 9 110 205600+ 83 Linux native
/dev/hda7 111 111 118 16096+ 83 Linux native
/dev/hda8 119 119 135 34240+ 82 Linux swap
/dev/hda9 136 136 161 52384+ 83 Linux native
/dev/hda10 162 162 174 26176+ 83 Linux native
/dev/hda11 175 175 378 411232+ 83 Linux native

output from df:

Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/hda5 15554 7335 7416 50% /
/dev/hda6 199047 180276 8491 96% /usr
/dev/hda7 15583 49 14730 0% /tmp
/dev/hda9 50717 9503 38595 20% /var
/dev/hda10 25339 2575 21456 11% /var/log
/dev/hda11 398124 347271 30292 92% /home
/dev/hda12 842155 736076 106079 87% /usr/local/squid/cache

--
Alistair Riddell - BOFH
IT Support Department, George Watson's College, Edinburgh
Tel: +44 131 447 7931 Ext 176 Fax: +44 131 452 8594


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