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youth against youth
n00b
Joined: 17 Jul 2006
Posts: 14
Location: Rimini
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 Posted: Fri Jul 21, 2006 10:44 am Post subject: lost partition table |
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Hi, i'm experimentig a nasty problem that's scaring me a little..
It seems like i've no more got a partition table 
here is my fstab
| Code: | /dev/hda4 / reiserfs noatime 0 1
/dev/hda3 none swap sw 0 0
/dev/hdc /mnt/cdrom iso9660 noauto,ro,users 0 0
proc /proc proc defaults 0 0
shm /dev/shm tmpfs nodev,nosuid,noexec0 0 |
and here is what fdisk -l /dev/hda says
| Code: | Oni ~ # fdisk -l /dev/hda
Disk /dev/hda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/hda doesn't contain a valid partition table
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The story so far (or "what have i done to do such a mess on my system"):
I've tried to run the swsusp using hibernate script, it has come falwless to the powerdown but, during rebooting, i've seen the boot process complainig about the absence of a swap partition
here is what /var/log/messages has to say:
| Code: |
Jul 21 09:52:26 Oni [ 57.103107] Unable to find swap-space signature
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When i run fdisk (or mac-fdisk for that matter) i've got this scaring output
| Code: |
Oni log # mac-fdisk /dev/hda
The number of cylinders for this disk is set to 16383.
This is larger than 1024, and may cause problems with:
1) software that runs at boot time (e.g., LILO)
2) booting and partitioning software form other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0000 of partition table 4 will be corrected by w(rite)
Command (m for help): p
Disk /dev/hda: 255 heads, 63 sectors, 16383 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Begin Start End Blocks Id System
Command (m for help):
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So, where is my freakin partition table?
I've tryed to mkswap & swapon.
It seemed to work but it's not, i can create the swap fs on the partition, I can turn it on with swapon but the system wouldn't see it..
Now i'm asking myself:
- how could this system boot if it has no partition table?
- it's safe to reboot and may it fix the problem or i will not be able to boot agains?
Any help would be really appreciated =)
PS i'm using gentoo-sources-2.6.17-rc3 with swsusp on a powerbook 12' 1Ghz (yes,the one with the infamous Nvida FX 5200 Go-And-Get-Yourself-Blessed )
UPDATE: emerged parted and gparted..they seem to read correctly the partiotion table..
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Cristiano Balducci
Think for yourself and question authority |
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radoslawc
Tux's lil' helper
Joined: 08 Jun 2005
Posts: 112
Location: POLAND
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| Posted: Fri Jul 21, 2006 12:29 pm Post subject: |
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Hi
try this for guessing partition layout, works sometimes 
edit: ah I see your update yo seem to found it already cheers
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“You know all those extra lines of code that we sometimes refer to as bloatware. It's actually very important and efficient stuff. There is some very substantial functionality built into the operating system.” Laura DiDio |
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JoseJX
Retired Dev
Joined: 28 Apr 2002
Posts: 2774
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| Posted: Fri Jul 21, 2006 1:42 pm Post subject: |
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Well, first of all, fdisk should never be used on a mac partitioned disk, it will never show useful information (it's only for PC partitions). If you have written a PC partition to a disk (with fdisk) already containing mac partition, it can screw up like this. If parted reads the partition info fine, have you tried letting it save the partitions info again to overwrite the dodgy info? Make sure that you write down your current partitions and extents just in case!
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