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Old 05-26-2006, 08:38 PM   #1
synchronous0987
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Ubuntu changed hdd TOC, cannot revert


My Asus AMD64 laptop had a dual boot XP pro corp. and Ubuntu from 2005 running fine. I decided to nuke the drive so I loaded mepis live CD, using the GUI I killed the partitions and formated them as Fat32 for ease. When installing XP the setup saw the full 60G drive, and installed fine. After the setup when in the gui the drive reads as 30gb, with no other partition visible. So I load Mepis Live again, and I can only see 30G. After trying just about everything, different f-disk, different OS, I find that only Ubuntu can see the full 60g. Disk recovery software cannot remedy the problem. Ive even low level formated the drive and still, Ill I see is 30 gigs!
 
Old 05-28-2006, 05:26 AM   #2
Simon Bridge
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http://en.wikipedia.org/wiki/File_Allocation_Table
Quote:
Windows 2000 and Windows XP can read and write to FAT32 filesystems of any size, but the format program on these platforms can only create FAT32 filesystems up to 32 GB. Thompson and Thompson (2003) write[4] that "Bizarrely, Microsoft states that this behavior is by design." Microsoft's knowledge base article 184006[3] indeed confirms the limitation and the by design statement, but gives no rationale or explanation. Peter Norton's opinion[5] is that "Microsoft has intentionally crippled the FAT32 file system."
Technically, windows should be able to read the whole thing, unless you have run the scandisk utility?
 
Old 06-03-2006, 07:23 PM   #3
synchronous0987
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toc

Ive ran scandisk, actually i loaded one of those "ultimate boot" cds with loads of differant partitioning tools, defrags, and diagnostics. Only about half can see the entire drive. Ive also tried to format the entire 60 as a ntfs partition but to no avail. At this point im wondering if ubuntu selected a filesystem specific to itself, some kind of custum ext3. So I'm looking for a newer debian based partion tool, other than QTParted, that is compatable with the ubuntu ext3. Then I can convert the drives remaining 30 gigs as a more compatable filesystem. hopefully
 
Old 06-03-2006, 08:59 PM   #4
syg00
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Sounds odd - let's see the output from "fdisk -l" (that's ell, as in list). Just issueit from a terminal session.
 
Old 06-04-2006, 05:50 AM   #5
Simon Bridge
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With scandisk, you have a technical limit of 125.55gig for fat32. However, I recall trouble when using scandisk with large (>32gig) fat32 partitions. You could try repartitioning and not letting scandisk peek at the partition - or use fat32 partitions no bigger than 30gig.

However: the output of fdisk -l gets my vote too.
 
  


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