Hi Lester, >> Eric: In your initial report, you say that TDSK fails as >> soon as you have 512 MB RAM - however, your DEVICEHIGH line >> always selects a TDSK size of 8 MB, so...? Maybe some other >> problem? Cannot see a 512 MB RAM-exist-limit there, only a >> (for normal sector size) 32 MB ramdisk-size limit...?
> Following the above private email from Eric I decided to run a few > tests. The conclusion is that on my system tdsk will crash FreeDos > at boot time if some older Q drivers are loaded before. With the > latest Q drivers (qxumbpci & qxhimem) tdsk loads ok. Thanks for testing, but now we only know that the five (!) drivers DEVICE=D:\FDOS\BIN\QHMBOOT.SYS /T7 DEVICE=D:\FDOS\BIN\QDBOOT.SYS /R /W DEVICE=D:\FDOS\BIN\UMBPCI.SYS DEVICEHIGH=D:\FDOS\BIN\QDREL.SYS DEVICEHIGH=D:\FDOS\BIN\QHIMEM.SYS /N128 /T7 are less compatible with TDSK than QXUMBPCI combined with QXHIMEM. Which of the other drivers causes problems is unknown, but I assume that the "placeholder, then move to UMB" style of loading for the Q-BOOT-then-Q-driver pairs causes problems here. Actually that method is quite risky anyway, so its not necessarily a bug in TDSK which causes the problem here. Anyway, good to know that QXHIMEM solves the problem. Now I am only waiting for a QXHIMEM which can work with NORMAL UMBPCI - there should be no big problems to create one. Not sure what the QDBOOT/QDREL drivers are doing in this scenario, probably got superseded by updates in QDMA and QCDROM...? Last but not least TDSK is more or less dead unmaintained software. Sources are only available for TDSK 2.3, not for TDSK 2.4, and of course the SHSU RAMDRIVE "SHSURDRV" main- tained by Jason is a lot better than TDSK without using more disk space :-). After all, SRDISK is four times bigger than the other two. Sure, SRDISK is resizable, but when you only want a ramdisk for a boot diskette, it is often too big. Eric PS: I think I confused the limits... Probably in FreeDOS, TDSK has a size limit of 32 MB and SRDISK has one of 512 MB. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
