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sinisterdomestik
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Joined: 28 Aug 2003
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Location: Texas
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 Posted: Fri Nov 12, 2004 10:25 pm Post subject: doesnt read hd right |
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i have a 80 gig WD hard drive that i put BACK into my comp as a backup drive kinda thing. it used to have d0ze on it so i took that off and was gonna make it a linux partition. but it wont read it right. i fdisk'ed it and all that and it keep saying that the drive is only 236 M instead of 80 GIG. anyone know why or how to fix that??
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NeddySeagoon
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Joined: 05 Jul 2003
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| Posted: Fri Nov 12, 2004 10:35 pm Post subject: |
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sinisterdomestik,
I would try | Code: | | dd if=/dev/zero of=/dev/<drive> bs=512 count=1 |
and see what happens. Dont do that to the wrong drive, it writes a block of zeros where the MBR and partition table used to be.
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Computer users fall into two groups:-
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sinisterdomestik
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Joined: 28 Aug 2003
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Location: Texas
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| Posted: Fri Nov 12, 2004 10:55 pm Post subject: |
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that zero'd out the drive, but df -hT still reads
| Code: |
/dev/hdb1 ext2 236M 13K 224M 1% /mnt/gentoo_backup
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NeddySeagoon
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| Posted: Fri Nov 12, 2004 11:07 pm Post subject: |
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sinisterdomestik,
Have you got Logical Block Addressing on in the BIOS for that drive?
This sort of sillyness happens when C/H/S addressing is on and looks at a big drive and wraps it around 528Mb.
If your motherboard is too old to have LBA (unlikely) you will need a drive manager to sort out the problem.
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NeddySeagoon
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sinisterdomestik
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Location: Texas
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| Posted: Fri Nov 12, 2004 11:15 pm Post subject: |
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i dont think so. i know i never had this problem befoer when i had both drives plugged in. the only difference is that now, my master drive used to be the slave drive and vice versa for my 80 gig. as in, the 80 gig came with the computer and was master and i added a 120 gig as a slave, and now the 120 is master and 80 is slave
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NeddySeagoon
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| Posted: Fri Nov 12, 2004 11:22 pm Post subject: |
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sinisterdomestik,
What does hdparm -i /dev/hdb say ?
Your original post mentioned /dev/hdb1 which is a partition. there is nothing wrong with a partition being 236Mb
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NeddySeagoon
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sinisterdomestik
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Location: Texas
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| Posted: Sat Nov 13, 2004 8:08 pm Post subject: |
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| Code: |
root@BlackBeauty:~ $ hdparm -i /dev/hdb
/dev/hdb:
Model=Maxtor 4D080H4, FwRev=DAH017K0, SerialNo=D41AJC9E
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 0:
* signifies the current active mode |
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NeddySeagoon
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| Posted: Sat Nov 13, 2004 8:55 pm Post subject: |
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sinisterdomestik,
That says the drive is about 80Gb | Quote: | | LBAsects=156301488 |
and that Logical Block Addressing is on.
It reports to the BIOS that its about 8Gb which is where the C/H/S addressing runs out of bits.
What size does the BIOS HDD auto detect report the drive as?
Have you got the size clipng jumper on the drive?
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NeddySeagoon
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sinisterdomestik
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| Posted: Sat Nov 13, 2004 9:38 pm Post subject: |
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im about 80% sure it said 80G but i dont remember exactly. how can i go in and fix it?? and i have the jumper set on slave
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NeddySeagoon
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| Posted: Sat Nov 13, 2004 10:49 pm Post subject: |
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sinisterdomestik,
Just look in the BIOS at the next boot. there is nothing to fix.
The drive has several jumpers, master and slave are two. I know thats right or the master won't work either.
There is another jumper called Cylinder Limit or Clip or something like that. Is that fitted?
Its in the same block as the Master/Slave settings.
It makes the drive lie to the BIOS about its size. Gentoo will still use it all but if you want to boot from it, all the files needed for booting have to be in the part of the drive the BIOS knows about.
If your BIOS reports 80Gb, thats not the problem, so no need to take the PC apart.
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NeddySeagoon
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sinisterdomestik
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| Posted: Sat Nov 13, 2004 11:51 pm Post subject: |
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the only jumpers i have and have in the drive are the master and slave. ive never heard of the cylinder limit thing.
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GeoffOs
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Joined: 13 Dec 2003
Posts: 56
Location: Cheshire
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| Posted: Sun Nov 14, 2004 4:17 pm Post subject: |
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| sinisterdomestik wrote: | that zero'd out the drive, but df -hT still reads
| Code: |
/dev/hdb1 ext2 236M 13K 224M 1% /mnt/gentoo_backup
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| Code: |
man df
NAME
df - report filesystem disk space usage |
So that is only showing information about a partition.
What does info does fdisk give you?
then select p
http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=4#fdisk
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sinisterdomestik
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Joined: 28 Aug 2003
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Location: Texas
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| Posted: Mon Nov 15, 2004 11:08 am Post subject: |
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ok, heres the WHOLE process
so i made a partition that was supposed to take the whole 80 gig drive
| Code: |
root@BlackBeauty:~ $ fdisk /dev/hdb
The number of cylinders for this disk is set to 155061.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4):
Value out of range.
Partition number (1-4): 1
First cylinder (1-155061, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-155061, default 155061):
Using default value 155061
Command (m for help): p
Disk /dev/hdb: 80.0 GB, 80026361856 bytes
16 heads, 63 sectors/track, 155061 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 1 155061 78150712+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
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then i did df -hT to see how large the partition was
| Code: |
root@BlackBeauty:~ $ df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/hdb1 ext2 236M 13K 224M 1% /mnt/gentoo_backup
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and since thats not right, i did a fdisk on that particular partition
| Code: |
root@BlackBeauty:~ $ fdisk /dev/hdb1
The number of cylinders for this disk is set to 155060.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/hdb1: 80.0 GB, 80026329600 bytes
16 heads, 63 sectors/track, 155060 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
Command (m for help):
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and that DEFINITLY doesnt look right. so any suggestions??
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sinisterdomestik
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| Posted: Wed Nov 17, 2004 11:25 am Post subject: |
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anyone have any ideas??
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