re permanaent swap file with dos dbldisk in comp os ms windows misc you write while reading through the dos book it states that the windows permanaent swap file will not work correctly when placed on a compressed drive to make things compatable i removed my permanent swap file before starting the upgrade however when all the dust settled and i go into windows it says that the temporary swap file is right where it always was in the windows directory my question is how come the temporary swap files works ok with a compressed drive and the permanent one doesn t you might want to look in windows faq for this one but here is my best explanation but i can t guarantee that i m not way off base the permenant swap file is read written to by windows by talking directly to the hard disk controller card the controller card must use the protocal set up by western digital or something like that windows creates a file called spart par in your windows directory that points to that file it then uses the physical information about your disk to index to information in that file compressed disks are actually logical disks these disks have different characteristics than the actual physical disk furthermore the information on the compressed disks must be uncompressed before it is used i e it must go through the decompression program that traps disk reads at the operating system level or the bios level because of this inbetween program windows cannot use direct methods to read from the logical disk a permenant swap file is only there to reserve an area of the disk that windows can use and to block that space from dos windows would theoretically not even have to access the file from dos to use that disk space i don t know if it does or doesn t but it checks for it somewhere everytime you boot windows a temporary swap file is just a normal dos file that is accessed by windows via dos and the bios if a disk compression program or other tsr is loaded the file access must go through dos tsr s disk compression and bios in order to be access i e never use a temporary swap file never more on permenent swap files i m sure everyone who has an uncompressed part of their compressed hard disk has seen the message you have selected a swap file greater than the suggested size windows will only use the size suggested do you wan t to create this swap file anyway or something like that well a friend of mine robert called microsoft and asked them what and why what they said is that windows checks the amount of free disk space and divides that number by then it checks for the largest contiguous block of free disk space windows then suggests the smaller of the two numbers they also said that under absolutely no circumstances none will windows uses a swap file larger than the suggested size well that s what he said i call bull if this is true why does windows report the memory is available to me if it s not going to use it any takers james if this doesn t get to the net will someone post it for me thanks
