Date: Wed, 26 Jan 2005 20:39:03 -0800 (PST) From: Matt Hanson <[EMAIL PROTECTED]> Subject: Re: [LIB] Disc Size - Maximum?
John... I'd be really interested to know if you've tried David's test for checking exactly where the Libretto writes its hibernation data to on your hard drive Again, his post was here: http://www.technoir.nu/libretto/list/2002/msg03093.html The process was to simply write something in Notepad, hibernate, & come out of hibernation and use a hex editor to search the disk for the text you wrote in Notepad. Are you really seeing the data written to the end of the drive? That'd be impressive if it is indeed happening. Matt. > John Musielewicz wrote: > > > > hi matt > > > > umm matt the bios sees a drive over 8Gig as a 8 gig > > drive so it'll write on the end of the drive. it sees > > the whole drive like this > > > > |-----------------bios=8GB---------------------------| > > |-------------Operating system=greater > > 8GB-----------| > > > > so figure looking at the drawing above the end or the > > drive is to the right the bios will write it at the > > end and the os will write it at the end if you set it > > up that way of course. now many people will say > > differant but I let you in on a little secret. I am --- Philip Nienhuis <[EMAIL PROTECTED]> wrote: > Once I was thinking exactly these same thoughts, after I was informed by > Wilm Bockey that the BIOS hibernation stuff indeed uses the int13 > extensions - IOW the BIOS hibernation routines would have no problem at > all writing the memory image to the real end of the disk. > > But then .... > > (1) a number of people who ignored the location of the hibernation area > around the 8 GB barrier have reported serious data loss; > > (2) a number of people simply tested where the BIOS dumps the memory > image using files with special patterns and found it to be around 8 GB; > > (until further info comes along I perceive these as simple facts) > > and some further thinking yielded: > > (3) There is no specially designated hibernation area mentioned in the > MBR or EMBR. Without it, how would BIOS hibernation be able to deduce > where the end of the disk is...? The only available alternative outside > the OS is to use the crippled disk size reporting function of the BIOS > itself. And that can only see max. 8 GB... > You can check that yourself using a simple DOS assembly prog to involve > int13 subfunc 48h; it reports disk size by CHS parameters (implying 1024 > cyl limit) rather than number of sectors (cf. to LBA). __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo
