concept not clear

[kushal.7]

hi frnds,
acc to FAST TRACK of jan 2008, it is given on page no. 124 (second last line) that
(1) "A computer can connect to a maximum of 127 usb devices direclty or by using hubs."
nd on page no. 34 last paragraph it is given that
(2) "A maximum of 24 logical drives can be created, since each drives need to be lettered, and letters A and B are reserved for floppy disks."

my question is that if the (1) statement is true then how the OS assign letter to usb drive. b'coz it can neither give (aa,ab.......) nor (a1,a2......) nd of cource nt the special symbols..........
or the 1st statement is wrong???..........

[ayush_chh]

yes the first statement is true but not practically (as far as i know).....its only possible theoretically...

[slugger]

read it long time back.....so the info is a little hazy

but AFAIRemember, if partitions exceed 26, the remaining partitons can be mounted as folders

[Faun]

but thats for ntfs

http://support.microsoft.com/kb/307889
http://en.wikipedia.org/wiki/Drive_letter_assignment

[dOm1naTOr]

Maybe the 124 figure is for all type of USB devices[max] and 24 is the max number of storage devices.

[slugger]

Originally Posted by dOm1naTOr

Maybe the 124 figure is for all type of USB devices[max] and 24 is the max number of storage devices.

+1

there are tonnz of non-storage USB devices avaialbe

it could havem ment to be a generalised sttement

[kushal.7]

if i want to make more than 24 partitions.......how can i do this ???.........any trick???..........

[passion_unlimitedd]

Originally Posted by dOm1naTOr

Maybe the 124 figure is for all type of USB devices[max] and 24 is the max number of storage devices.

yeah it maybe for all types of devices including storages devices.

[slugger]

Originally Posted by kushal.7

if i want to make more than 24 partitions.......how can i do this ???.........any trick???..........

if those partitions r for HDD then format it to NTFS FS

[dOm1naTOr]

Use linux in multiboot and add another set of 10s or 20s of partition in EXT file system.

[mehulved]

Originally Posted by kushal.7

hi frnds,
acc to FAST TRACK of jan 2008, it is given on page no. 124 (second last line) that
(1) "A computer can connect to a maximum of 127 usb devices direclty or by using hubs."
nd on page no. 34 last paragraph it is given that
(2) "A maximum of 24 logical drives can be created, since each drives need to be lettered, and letters A and B are reserved for floppy disks."

my question is that if the (1) statement is true then how the OS assign letter to usb drive. b'coz it can neither give (aa,ab.......) nor (a1,a2......) nd of cource nt the special symbols..........
or the 1st statement is wrong???..........

Well I am not sure about windows, others can help with that but unix based OS's can very well handle such a large number of devices without any problems.

[mediator]

Originally Posted by kushal.7

hi frnds,
acc to FAST TRACK of jan 2008, it is given on page no. 124 (second last line) that
(1) "A computer can connect to a maximum of 127 usb devices direclty or by using hubs."
nd on page no. 34 last paragraph it is given that
(2) "A maximum of 24 logical drives can be created, since each drives need to be lettered, and letters A and B are reserved for floppy disks."

my question is that if the (1) statement is true then how the OS assign letter to usb drive. b'coz it can neither give (aa,ab.......) nor (a1,a2......) nd of cource nt the special symbols..........
or the 1st statement is wrong???..........

1) AFAIR, thats becoz of 8 bits of which 1 bit is used as RESET. That leaves 7 bits!
2) I think thats becoz of the alphabetic scheme used, 26 in total, in windows.

About ur question, the alphabetic scheme is not for *nix (Linux, BSD etc).