Suddenly, insufficient space?

No, but if you need all of the regions covered by City Navigator maps then you will. The full mapset is now bigger than the available free space on these 2GB units and therefore you need install all, of part, of a map update on the SD card.

If you don't want to use a card then the installation program offers you various regions that you can load on the unit. It's just all of North America or Europe that will not fit on the 750.

You can try to delete all the voices, text, keyboard, etc. files from the Nuvi, that you don't need, and you may squeeze the full update on to it but it's just a matter of time before your going to need the card.

Always back up your current nuvi files before tinkering with files on the nuvi!

Before the last couple of map updates, Bill, I removed all voice files except for the seven English language ones, plus deleting unneeded languages for text, traffic and help files on my nuvi 750.

After making these deletions--and still with a 3MB supplemental map and 20 MB Custom POI files on the 750 itself (no files on SD--in fact, no SD card is in place) I was still able to install all of North America with the current 2013.10 map update and have 86MB free space.

Keeping things as they are above, I may be able to install all of North America for the next one or two map updates, but for sure, the end of a full North America map installation directly to the nuvi with no need for a SD card is right around the corner for me.

But for now, and I expect the next map update, you should be able to fit all of North America with a half-dozen TTS voices plus American English voice and have close to 100MB in free space.

you should have enough memory.

This is from a post by bear007 at
http://www.poi-factory.com/node/33586

EDIT - On 01/29/12 @ 5:39 PM EST, brought the updates back to this top post or added info from another source.

GPS -> GB
==============

Just Released 2012 NUVI Line

30/40/50 -> approx. 1.76 GB reported by Garmin
24x5 and 25x5 series -> approx. 7GB reported by Garmin
2595 -> 8GB reported on DIAG screen by @Chizad
3400 series -> approx. 7GB reported by Garmin

- see bear007 post on 9/14/11 @ 3:45 PM eastern

NUVI
2x0(W) -> 1 (early version) see posts below
2x0(W) -> 2 (later version) see posts below
250 - 265 -> 2
285W -> 2
295W -> 4
350 -> 2
360 -> 2
500 -> 3
650 -> 2, 3 (?)
660 -> 2
680 -> 2
750 -> 2
755 -> 4
760 -> 2
765 -> 4
775 -> 8
780 -> 2
855 -> 4
885 -> 4

1100 -> 2
1300 - 1490 -> 2
1690 -> 2
1690 EU -> 4

2350 -> 4
2360 -> 8
2360 Australian -> 2
2450 -> 4
2460 -> 8

3760 -> 4
3790 -> 8
37xx Australian -> 2

Dakota 20 -> 1

Dezl 560 -> 8

Etrex -> zero, data stored in EEPROM
Etrex Legend -> 8 MB (not GB)
Etrex Venture HC -> 24 MB (not GB)

Montana 650t -> 3.5
Streetpilot
C340 -> 2
C530 -> 1

Zumo
220 -> 4
550 -> 0.5* Aus
550 -> 1.2 US
550 -> 2.1* Euro
660 -> 4
665 -> 4

I have deleted all the voices I don't use, and installed the latest update (I have a NUVI 350) and have 295mb free after the update.
My question is, does deleting the voices, delete the foreign text? If not, how do I do that?
I can find the voices in the program files, but I cannot find the text.
Thank you for any help I can get.

If your 350 has a file structure like the 750, the voice files are in your nuvi's /Garmin/Voice/ folder. Text files are in Garmin/text/ and Help files in Garmin/Help/. Once in each of these directories, it should be pretty obvious from file names which foreign language files can be deleted (after, of course, you have a pre-deletion backup of your entire nuvi on a computer or other drive).

If the nuvi 3xx series has a different file structure than the nuvi 7x0 series, we'll need a 3xx specialist to chime in.

But wow, a 350 that has 295MB of free space after removing unneeded voice files is great and it'll be good for years of future map updates. I wouldn't sweat finding any more space for now.

I have to admit that's it's been awhile since I looked at the contents of my 350 so I can't be sure what I've deleted from it over time, other than all the voices except the English ones. In any event I don't have a text or help folder on the device at all.

Same here, I deleted the other voices quite a while ago (two updates ago)and I can't find a help file either. I guess the old saying might be true "Let sleeping dogs lie" might be the best approach in this case.

I have orignal backups of my 660 and 765T.

Intersting to note the 660 has Help Folder nit NO Text Folder.
The 765T has both the Help and Text Folders.
Seems like when newer units came out they began adding the folders.